Literatura académica sobre el tema "Manufacture and works"
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Artículos de revistas sobre el tema "Manufacture and works"
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Voznyak, Orest, Khrystyna Myroniuk, Iryna Sukholova, Oleksandr Dovbush, and Mariana Kasynets. "Increase of ventilation systems procurement and installation works efficiency." Theory and Building Practice 2020, no. 2 (2020): 77–83. http://dx.doi.org/10.23939/jtbp2020.02.077.
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The article presents the results of theoretical research on obtaining of the maximum profit by the installation and procurement company in the manufacture and sale of pipe billets for the installation of ventilation systems in the production premise. Graphical and analytical dependences are given. The results of research substantiate the receipt of the maximum profit in the manufacture and sale of the ventilation pipe billets of the different diameters by the installation and procurement enterprise. The purpose of the work is to increase the efficiency of ventilation system installationin production facilities, to determine the maximum profit for the installation and procurement company in the manufacture and sale of pipe billets of the different diameters of ventilation system in the presence of several restrictions on materials and manpower, identify ways to improve installation of ventilation system in production facilities of small volume and justification of the calculation method. Quantitative characteristics of the objective function under given initial conditions are established. The calculated dependences for determining the parameters of the objective function are obtained. The obtained results allow to determine the optimal parameters of the values at the given restrictions on materials and labor intensity of production. The maximum profit in the manufacture and sale of ventilation pipe billets of different diameters by the procurement and installation company is determined. Using of the graphical method and the simplex method to determine the required parameters can significantly increase the efficiency criteria for procurement and installation work and thus reduce the amount of labor and material consumption for the manufacture and installation of ventilation systems.
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Cherepanov, Anatoliy. "OF FORECASTING THE RESOURCE OF SINGLE AND UNIQUE MACHINES." Bulletin of the Angarsk State Technical University 1, no. 16 (2022): 153–64. http://dx.doi.org/10.36629/2686-777x-2022-1-16-153-164.
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The article presents an analysis of methods for predicting the resource of individual and unique machines based on scientific works, inventions, and regulatory documents since 1988. The analysis touched upon the works devoted to forecasting the design, initial, determined during manufacture, and residual resources. The advantages and disadvantages of methods for estimating the resource of single and unique machines are considered. The analysis showed that in most works and methodological recommendations, methods of forecasting the residual resource are mainly given. As is known, safety begins at the stage of project development, therefore, it is necessary to evaluate not only the residual resource, as is customary in most scientific developments, but also to more accurately determine the initial resource during manufacture and the current resource during operation. In earlier works, only the reliability of hazardous facilities was considered, and only in the last decade has the development of methods for evaluating the design and initial resource in the manufacture of single and unique machines begun. The ways of development of methods for assessing the resource of individual and unique machines in their manufacture in accordance with the requirements of standards and technical documentation are shown
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Dang, Phuong Xuan. "Design and manufacture of cycloid reduction gearbox made by combined materials for working in corrosive environment." Science and Technology Development Journal 20, K5 (2017): 81–86. http://dx.doi.org/10.32508/stdj.v20ik5.1163.
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This paper presents research result of design and manufacture of the cycloidal gearbox with some advantages such as low noise, high transmission ratio, high load, and erosive resistance. The new point of this works is the utilization of combined stainless materials that can be worked in an erosive environment, especially in the aquatic mechanical area, in order to save material and to increase the cycle life of this equipment. Besides, the cycloidal gearbox with stainless steel and polymer materials can be lubricated by water and is used with water-resistant or submersible electric motor. This new cycloidal gearbox can replacethe worm gearbox. A 1,5 HP cycloidal gearbox with the reduction ratio 29 that is used in aquaculture has been designed and manufactured successfully. In this work, the analytical method and numerical simulation are used to design and manufacture the gearbox. For the future works, this cycloidal gearbox will be tested in the real environment with aquaculture aerator system so that its performance will be fully verified and assessed
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Kim, Dong-jo. "Manufacture of LED Display Works based on Real time Interaction." Journal of Digital Art Engineering and Multimedia 4, no. 1 (2017): 41–49. http://dx.doi.org/10.29056/idaem.2017.06.04.
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Fithriyah, Zulfita, and Nazaruddin Malik. "PENGARUH KREDIT PERBANKAN TERHADAP PERTUMBUHAN INDUSTRI MANUFAKTUR DALAM MENUNJANG PERTUMBUHAN EKONOMI INDONESIA." Jurnal Ekonomi Pembangunan 8, no. 1 (2016): 210. http://dx.doi.org/10.22219/jep.v8i1.3596.
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This research works through about influence between banking credit insuranceansies with industrial growth of manufacture. Besides also studies about vesting influence of credit insuranceansi to economic growth in Indonesia. Based on research done, obtained result that level of credit insuranceansi given to manufacture industry will affect at improvement of output at company. So equally, the many vestings of credit insuranceansi compares linear with industrial improvement of manufacture. At research hereinafter, happened the relation of concurrent between industrial growths of manufacture with chartered investment counsel growth. Where when industrial growth of manufacture increased hence will cause improvement at chartered investment counsel growth. Manufacture industry is one of economic sector, which if manufacture industry increased hence its the contribution is ever greater to chartered investment counsel growth. So growth of chartered investment counsel can increase
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Peña, F., C. Fernández, G. Valiño, B. J. Álvarez, J. C. Rico, and S. Mateos. "Design and construction of a test bench for the manufacture and on-machine non-contact inspection of parts obtained by Fused Filament Fabrication." IOP Conference Series: Materials Science and Engineering 1193, no. 1 (2021): 012090. http://dx.doi.org/10.1088/1757-899x/1193/1/012090.
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Abstract Industrial application of additive manufacturing (AM) technologies is subjected to limitations related to the lack of dimensional and geometrical accuracy of manufactured parts. Many works were dedicated to improve quality of parts manufactured by AM, but integrated solutions in commercial-type AM machines have not been achieved yet. With this aim, the present work describes the design, manufacture and starting-up of a mechatronic test bench first prototype, with the double capability of 3D printing by Fused Filament Fabrication (FFF) and non-contact inspection of deposited layers. Both systems operate coordinately as the part is constructed. Final tests describe the effectiveness of both integrated systems and state the basis for further research.
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Bigeev, V. A., S. K. Nosov, and B. A. Sarychev. "Development of the manufacture of armor steel in the Magnitogorsk metallurgical works." Russian Metallurgy (Metally) 2014, no. 6 (2014): 471–73. http://dx.doi.org/10.1134/s0036029514060044.
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Zhao, Shuai, De Qiang Zhang, and Nu Hu. "The Research on Rapid Design and Manufacture Method for Letters Product Based on RP Technology." Applied Mechanics and Materials 496-500 (January 2014): 2594–97. http://dx.doi.org/10.4028/www.scientific.net/amm.496-500.2594.
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In order to solve the problem that the design and manufacture method for letters product in traditional ways has a long period and high cost, a new design and manufacture method based on RP technology was proposed. Firstly, Rhinoceros software was used to design the initial model, and then the initial model was put into SolidWorks software for model processing. After that, the established model was put into RPdata software for data processing. Finally, by using RP450B rapid prototyping machine, a rapid prototype of the model was achieved. Through the study, some key problems such as model design, processing of model data and manufacturing process were discussed. The new design and manufacture method has greatly shortened the design and manufacture cycle of the letters product, and it provides the reference for the design and manufacture for other art works.
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Syavira, Riri, Tiaminah Nasution, Raisa Nabila, and Rita Juliani. "DESIGN AND BUILD SALAK (Salacca Sumatrana) EMBALMING MACHINE WITH CONVEYOR." Jurnal Geliga Sains: Jurnal Pendidikan Fisika 6, no. 1 (2018): 60. http://dx.doi.org/10.31258/jgs.6.1.60-64.
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It has been done the manufacture of Salak embalming machine for partners of Lopo Salak inPadangsidempuan. This machine can be used to assist partners in the process of embalming Salak to produce good quality and guaranteed freshness. The steps in the manufacture of this machine start from the design, the provision of tools and materials, manufacture and test the machine. The results show that the machine works optimally with the average production of salak 25 kg/hour due to embalming. In addition, the embalming machine has a propulsion engine that serves as the embalming and drying of Salak.
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Černý, Ivo. "Evaluation of Interlaminar Shear Strength of Longitudinal GRP Railway Bogie Frames Considering Microstructure Aspects." Key Engineering Materials 577-578 (September 2013): 521–24. http://dx.doi.org/10.4028/www.scientific.net/kem.577-578.521.
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The paper contains results of a comprehensive research and development programme aimed at an evaluation of static strength of a GRP railway bogie of a new advanced design. The works were carried out as one of the essential phases of the implementation of a EUREKA project EUROBOGIE, which is aimed at development of advanced vehicle bogies and has a great potential to lead to more efficient movement of freight and passengers with lower environmental impact. The GRP bogie design consists of three main load carrying parts, namely two quite massive longitudinal side frames connected by a central transom plate which are manufactured in a single moulding operation using the resin transfer moulding (RTM) method. Since the component is unusually thick, all parameters of the RTM method have to be well balanced. One of the critical issues in the design and manufacture is the connection area of the transom with the side frames. Therefore, testing of this subcomponent was an important part of the bogie development. Results of the experimental programme provided necessary feedback for the optimization of the manufacture technology.
Tesis sobre el tema "Manufacture and works"
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Meehan, Samantha. "The fate of cyanide in groundwater at gasworks sites in South-Eastern Australia /." Connect to thesis, 2000. http://eprints.unimelb.edu.au/archive/00000229.
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Hepola, Jouko. "Sulfur transformations in catalytic hot-gas cleaning of gasification gas /." Espoo [Finland] : Technical Research Centre of Finland, 2000. http://www.vtt.fi/inf/pdf/publications/2000/P425.pdf.
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Tang, Wing-keung. "Redevelopment of potentially hazardous installations : a case study of the Hong Kong and China gas works at Ma Tau Kok /." [Hong Kong] : University of Hong Kong, 1993. http://sunzi.lib.hku.hk/hkuto/record.jsp?B13814199.
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Farkas, Zita. "The reception of Jeanette Winterson's work: The manufacture of a Contemporary British Writer." Thesis, University of York, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.489192.
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This thesis examines the ways in which four different reception areas shape the reception of Jeanette Winterson's work. These reception areas are the academic, the writer's own view on her work and its reception, the mass media and university syllabi. The analyses of these areas explore how the reception of Winterson's work is influenced by readers' negotiation with interpretations of her work within and among these kinds of reception.
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Griffiths, Sarah Jane. "The charitable work of the Macclesfield silk manufacturers, 1750-1900." Thesis, University of Liverpool, 2006. http://hdl.handle.net/10034/81282.
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The existing literature on philanthropic effort during the eighteenth and nineteenth centuries has taken a number of different approaches to the subject. These include general works charting the development of the charitable sector, the exploration of voluntary organisations as a subsidiary topic to broader themes and regional studies adopting a range of perspectives. Most research in this latter category has been conducted on large towns and cities that generally have copious amounts of source material. In contrast, lesser provincial towns have received relatively little scholarly attention, despite the more manageable nature of their documentation. The aim of this thesis is to explore the growth of charitable organisations within Macclesfield, an East Cheshire industrial town that was dominated by the silk industry. This study concentrates on the period from 1750 to 1900, when the silk industry was dominant within the town and philanthropic activity was at its height. The town?s silk manufacturers were renowned for their charitable work and thus this research focuses on the extent to which this occupational group was critical in the development of Macclesfield?s voluntary institutions, the motives that lay behind their contributions, and their achievements. In order to see whether their involvement was typical of other businessmen, comparisons are drawn throughout with the charitable activities of contemporary entrepreneurs in a variety of urban settings.This study investigates the silk manufacturers? participation in Macclesfield?s voluntary institutions in the fields of religion, education, public services and public amenities, together with any additional charitable acts. The evidence from all these areas suggests that in most cases the silk manufacturers were heavily involved in funding and managing these institutions. Their obvious motives reflected altruistic, religious and educational beliefs, but there were also a variety of other concerns that could have been contributory in determining their support for particular institutions. The primary achievement of Macclesfield?s voluntary sector was to provide a network of services that, in conjunction with later state initiatives, improved living standards for inhabitants by the end of the nineteenth century.This thesis gives an insight into the development of charitable institutions in a medium sized industrial town and demonstrates how one group of businessmen were able to dominate this field. Many silk manufacturers were generous in their support of charitable causes in Macclesfield, but the scale of their support did not match that of some other notable philanthropic families, such as the Crossleys of Halifax. The charitable work of the silk manufacturers appeared to be broadly similar to that of entrepreneurs in other small and medium sized industrial towns where they could form a dominant occupational group in public life. In larger towns and cities, this strong manufacturer influence was less evident and a greater range of other people contributed significantly to philanthropic institutions. This type of approach supplements the existing material on philanthropic effort during the long nineteenth century and overlaps a number of related subject areas, such as urban ?lite activity and the growth of the welfare state.
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Andersson, Henrik. "Thermal fatigue and soldering experiments of additively manufactured hot work tool steels." Thesis, Karlstads universitet, Fakulteten för hälsa, natur- och teknikvetenskap (from 2013), 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-68677.
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Modern manufacturing processes are under a never ending evolvement. Lowered manufacturing costs, higher part quality, shorter lead times and lower environmental impact are some important drivers for this development. Aluminum die casting is an effective and attractive process when producing components for e.g. the automotive sector. Die casting process development, and hot work tool steel development for the die casting dies has led to the state of the art of die casting today. However, with the disruptive emergence of Additive Manufacturing (AM) of hot work steel alloys, new interesting features such as improved conformal cooling channels inside die casting molds can be produced. The new way to manufacture die casting dies, need basic investigating of the AM produced hot work tool steel properties, and their applicability in this demanding hot work segment. Die casting dies face several detrimental wear mechanisms during use in production, three of which has been isolated and used for testing three AM produced steel alloys and one conventional premium hot work tool steel. The wear mechanisms simulated are; thermal fatigue, static soldering and agitated soldering. The aim is to study the AM produced steels applicability in the die casting process. The tested materials are; Premium AISI H13 grade Uddeholm Orvar Supreme, AM 1.2709, AM UAB1 and AM H13. Based on current investigations the conclusion that can be made is that with right chemistry, and right AM processing, conventional material Uddeholm Orvar Supreme still is better than AM H13. This also complies with the literature study results, showing that conventional material still is better than AM material in general.<br>Våra moderna tillverkningsprocesser är under ständig utveckling. Drivande motiv är minskade tillverkningskostnader, högre tillverkningskvalitet, kortade ledtider samt minskad miljöpåfrestning. Pressgjutning av aluminium är en effektiv och attraktiv tillverkningsprocess ofta använd inom till exempel fordonsindustrin. Utvecklingen av pressgjutningsteknologin har gått hand i hand med utvecklingen av det varmarbets-verktygsstål som används i gjutformarna (pressgjutningsverktyget). Den utvecklingen har lett till dagens processnivå och branschstandard. Men med den revolutionerande additiva tillverkningsteknologins (AM) intåg, och möjlighet att producera komponenter av varmarbetsstål, kommer nya intressanta möjligheter att integrera komplex geometri så som yt-parallella kylkanaler i verktyget utan att tillverkningskostnaden blir för hög etc. Det nya sättet att producera pressgjutningsverktyg ger upphov till behovet av grundläggande materialundersökningar av sådant AM-material, samt hur tillförlitligt det är i pressgjutningsverktyg med pressgjutningens krävande materialegenskapsprofil. Pressgjutningsverktyg utsätts för många förslitningsmekanismer och för höga laster, tre av dessa mekanismer har isolerats för kontrollerade tester av ett konventionellt material och tre AM materials responser. Förslitningsmekanismerna som efterliknats är; termisk utmattning, statisk soldering och agiterad soldering. Målet med undersökningarna är att studera AM producerade materials lämplighet i pressgjutningsprocessen. De material som testats är konventionella premium varmarbetsstålet Uddeholm Orvar Supreme av typ AISI H13, AM 1.2709, AM UAB1 och AM H13. Undersökningarnas slutsats är att med rätt kemisk sammansättning, och med rätt AM printing parametrar, är konventionellt material fortfarande mer applicerbart i pressgjutning än AM producerat. Den slutsatsen faller väl I samklang med resultaten från mekanisk provning som återspeglas i litteraturstudien, som visade visar att konventionellt material är generellt bättre än AM material.
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Trång, Christina. "Improving work conditions formanufacturing workers : A study at a module house manufacturer." Thesis, Luleå tekniska universitet, Institutionen för ekonomi, teknik och samhälle, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-65919.
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This thesis is the final component of the Master of Science degree within Industrial design engineering at Luleå University of Technology. The purpose of the project was to analyze an issue and developing a conceptual solution based on scientific knowledge within the field. The project was carried out at SmålandsVillan's production facility in Sundsvall which produces module bungalows and condominiums. The objective of the project was to define and analyze why the company struggled with sick leaves among the operators and the aim was to develop a solution to ease the strained work situation. When the project was initiated in January, the given issues were that two workstations, floor and middle joist system, had high sick leave due to physically demanding work and that they had been struggling with backlogs in the previous fall. The mapping of the current state started with a wide scanning of empirical data of sick leaves but also incidents and accidents for all teams at the facility. The data showed that the two workstations had higher sick leave than most of the other teams, thus the project carried out a more thorough mapping on these workstations. The focused mapping was carried out in two steps: First by observing ergonomic postures and analyzing with a modified version of the Ovako Working Posture Analyzing System (OWAS), and secondly by interviewing the operators to map their mental work situation. When the mappings were put together and analyzed, it was clear that the cause of the issues at floor joist system was a conflict between the operators and managers rather than physically demanding work. The facility had expanded its production in the fall and in that process, floor joist system lost stock areas, fell behind in the production pace, and got in a conflict with the managers. Because of the layout issues, the project focus was widened to map the current layout as well. At middle joist system, the found issues were static kneeling postures and carrying heavy loads. The ideation phase of the project was carried out in two parallel paths: One to develop a new layout at floor joist system, and the other to develop ergonomic equipment for middle joist system. The operators were highly involved in the process to define what issues to solve and find suitable solutions. A total of five concepts were obtained, two ergonomic solutions and three layouts. By a joint specification of requirements, one of the layout concepts was chosen for further development. The final development of the concept contained detailed solutions at several areas related to the workstation. In the current layout, the operators were forced to walk in the forklift aisles to get materials. This issue was not eliminated but reduced in the final concept development: By placing heavy materials closer to the worktables, the operators did not have to carry loads as far, thus the risk of musculoskeletal disorders was decreased. The accident risk when operators walk in the forklift aisles was also reduced because both distances and number of walks were decreased. In addition to the layout, ergonomic equipment of a pushcart and height adjustable table were also evaluated to further ease the strain on the bodies when handling heavy loads. Due to lack of time, it was not possible to calculate the optimal stock sizes. Therefore, the recommendation to SmålandsVillan is to first calculate material needs and thereafter implement the detailed areas one by one, and finally implement ergonomic equipment.<br>Denna rapport är det sista momentet i utbildningen Civilingenjör inom Teknisk Design med inriktning mot produktionsdesign vid Luleå Tekniska Universitet. Avsikten med projektet var att analysera ett problem och ta fram en konceptuell lösning baserat på vetenskap inom ämnet. Projektet genomfördes vid SmålandsVillans produktionsenhet i Sundsvall, vilka producerar modulhus och bostadsrätter. Syftet med projektet var att hitta och analysera orsakerna till varför företaget hade problem med sjukfrånvaro bland operatörerna och målet med projektet var att ta fram en lösning för att underlätta arbetssituationen. När projektet startade i januari var given fakta att vid två arbetsstationer, golv- och mellanbjälk, var sjukfrånvaro vanligt förekommande, arbetet var fysiskt krävande och under hösten hade det varit problem med släpande produktion. Kartläggningen av den nuvarande situationen började med en bred scanning där empiriska data över sjukfrånvaro, tillbud och olyckor jämfördes mellan alla arbetslag på fabriken. Sammanställningen visade att det var högre sjukfrånvaro vid de två arbetsstationerna än vid de flesta andra stationerna och därför fokuserades den detaljerade nulägesanalysen på dessa två. Den djupgående nulägesanalysen genomfördes i två steg: Först observerades belastningsergonomi genom en modifierad version av Ovako Working Posture Analyzing System (OWAS) och därefter intervjuades operatörerna för att kartlägga den mentala arbetssituationen. När den fysiska och mentala kartläggningen sammanställdes visade det sig att orsaken bakom problemen vid golvbjälk snarare var en konflikt mellan arbetslaget och cheferna under hösten än det fysiska arbetet. Fabriken hade expanderat produktionen under hösten och därmed förlorade golvbälk lagerytor, kom efter i produktionstakten och hamnade i en konflikt med cheferna. På grund av layoutproblemen breddades projektets fokus för att kartlägga den nuvarande layouten. Vid mellanbjälk var problemen att många moment tvingade operatörerna att stå på knä och att bära tunga laster. Idégenereringsfasen genomfördes i två parallella spår: Den ena för att ta fram layoutkoncept för golvbjälk och den andra för ergonomiska hjälpmedel för mellanbjälk. Operatörerna var engagerade i processen för att hitta vilka problem som fanns och vilka lösningar som skulle passa. Totalt togs fem koncept fram, två ergonomiska hjälpmedel och tre layouter. Genom en gemensam kravspecifikation valdes en av layouterna för vidare utveckling. Den fortsatta utvecklingen av konceptet innefattade detaljerade lösningar för flera områden som var relevanta för arbetsstationen. I den nuvarande layouten var operatörerna tvungna att gå i truckgångarna för att hämta material. Detta problem eliminerades inte men minskades i det slutgiltiga konceptet. Genom att placera tunga material nära arbetsborden behövde inte operatörerna bära lasterna lika långt och därmed minskade riskerna för belastningsskador. Olycksrisken när operatörer går i truckgångarna minskades också eftersom både sträcka och antalet vändor de gick i gångarna minskade. Layoutförändringen kompletterades med ergonomiska hjälpmedel, i form av en magasinskärra och ett höj- och sänkbart bord för att ytterligare minska den fysiska belastningen. På grund av tidsbrist var det inte möjligt att optimera hur mycket material som behövdes vid stationen. Därför är rekommendationen till SmålandsVillan att först beräkna materialbehov och därefter implementera de detaljerade områdena ett i taget och slutligen de ergonomiska hjälpmedlen.
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Vernon, Guy Mark. "Work humanization : comparative historical developments in the manufacturing sectors of advanced capitalist societies, 1960-1995." Thesis, University of Warwick, 2000. http://wrap.warwick.ac.uk/2957/.
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The thesis draws on official statistics to examine comparative historical developments in the humanization of work in manufacturing industry, engaging with vital debates on societal distinctiveness. The empirical analysis spans the manufacturing sectors of eleven of the leading industrialised nations over the period 1960-95. This substantive core of the thesis is informed by an examination of research method in the field of employment relations. Initial assessment of the availability and construct validity to aggregate statistical indicators of the humanization of work results in consideration of three phenomena; the rate of incidence of fatal injuries, average annual hours actually worked, and the relative extent of managerial hierarchy. Detailed assessment of the conceptual basis of the available statistics then follows, with the aim of obtaining historically consistent and cross-nationally comparable data on these aspects of work humanization. Although dependable data on fatalities and hours are derived, the limits of the aggregate indicator of managerial hierarchy are ultimately stressed. The comparative historical patterns in the data are then examined for evidence of cross-national convergence in experiences of work humanization. With little indication of any historic convergence apparent the analysis turns to consider the forces which may shape distinctive societal experiences. Quantitative gauges of the shape of the broad political economy are assembled, with a particular attention focused on the quantitative characterisation of the power resources of employees, whether collective or individual. The meaning of these necessarily crude indicators is given extensive consideration. The thesis culminates in separate panel econometric investigations of the political economic characteristics associated with comparative fatal injury incidence and actual annual hours of work. Substantial evidence is presented that the humanization of work is associated with an attenuation of the vulnerability of employees to managerial prerogative.
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Saedon, Juri Bin. "Micromilling of hardened (62 HRC) AISI D2 cold work tool steel." Thesis, University of Birmingham, 2012. http://etheses.bham.ac.uk//id/eprint/3390/.
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Investigations into micro-slot milling of high carbon, high chromium hardened AISI D2 cold work tool steel using 0.5mm diameter coated (TiAlN) tungsten carbide end mills were carried out. Performance was assessed in terms of tool life/tool wear, surface roughness, cutting forces, burr formation, slot geometry accuracy and workpiece surface integrity. The influence of operating parameters (cutting speed, feed rate and depth of cut) on tool life, surface roughness, burr width and cutting forces was evaluated using full factorial experiment design. Analysis of results included main effects plot and calculation of percentage contribution ratios (PCR) for each of the primary variable factors and their interactions were assessed via analysis of variance (ANOVA). The test array was further extended to allow for implementation of Response Surface Methodology (RSM) analysis in order to optimise tool life and surface roughness. Dual-response (cutting speed and feed rate) contours of metal removal rate and tool life/surface roughness were generated from the respective model equations. These were further developed to identify combinations of cutting speed and feed per tooth for the best tool life/surface roughness at specific metal removal rates. Finally, the impact of coatings and tool geometry on tool life and workpiece surface roughness was investigated.
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Rutson, Sandra M. "Rheology of chocolate. Rheological studies of chocolate in relation to their flow and mixing properties during manufacture." Thesis, University of Bradford, 1989. http://hdl.handle.net/10454/4200.
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An investigation has been carried out into the rheology of
chocolate in relation to its flow and mixing features in a real
industrial environment. The chocolate manufacturing plant of
Rowntree at York provided a base for this study.
The project aims were:
a) to measure the viscous and time dependent properties of
chocolate.
b) to explain the observed flow properties in relation to the
constituents of chocolate.
c) to determine the shear rate which, for a given recipe,
yields a minimum stable viscosity (of particular commercial
value).
d) to assess the type of mixer able to provide this duty.
The experimental work involved rheological studies with concentric
cylinder and tubular viscometers, operated to measure viscosity as
a function of shear rate and shearing time.
The chocolate samples studied were taken from various points in the
manufacture process at Rowntree, York. Model chocolate systems were
made from cocoa liquor, and sugar with cocoa butter, which were
studied to underpin the basic mechanisms of the flow properties of
the total chocolate.
Shear thinning in milk chocolate has been shown to be accounted for
by surface coating and fat release from the cocoa cellular
material.
Analysis of the sugar and cocoa butter system gave large hysteresis
loops which may be explained as due to agglomeration of the sugar
particles. The level of hysteresis was found to be related to the
polarity of the liquid phase, such that a more polar fluid results
in less hysteresis.
Laboratory experiments have revealed that the level of work input
to give permanent viscosity reduction for milk chocolate is
dependent on the measuring shear rate. The level of optimum shear
input for the measuring range 10 to 130 sec
1 is 645 sec for 30
minutes. The apparent viscosity measured at lower shear rates
requires much longer ([approx]100 minutes).<br>Yorkreco, Nester York Ltd.
Libros sobre el tema "Manufacture and works"
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Costa, José Alves da. Gás de Lisboa: Da iluminação pública a gás na Lisboa romântica ao gás natural. Lello Editores, 1996.
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Radkevich, V. V. Avtomatizirovannye sistemy upravlenii͡a︡ gazopererabatyvai͡u︡shchimi zavodami. "Khimii͡a︡", 1986.
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Gianpietro, Zucchetta, ed. Storia del gas nella città dei dogi. Marsilio, 1996.
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Jornadas Técnicas sobre Operación de Plantas de Gas (1990 Neuquén, Argentina). Jornadas Técnicas sobre Operación de Plantas de Gas: Neuquén, 25-29 junio, 1990. Instituto Argentino del Petróleo, 1990.
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Pacific Gas and Electric Company., ed. Historical overview of the former manufactured gas plants in northern and central California. Pacific Gas and Electric Co., 1987.
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Boele, Cora. De jaren van de Javaanse gasfabrieken, 1863-1905: Een episode uit de geschiedenis van het OGEM-concern. Uitgeverij Waterstad, 1990.
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Elliot, Doug. Plant processing of natural gas. 2nd ed. University of Texas at Austin, 2008.
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India. Central Pollution Control Board. Comprehensive industrial document for producer gas plants and biomass gasifiers. Central Pollution Control Board, Ministry of Environment & Forests, 2010.
Buscar texto completoCapítulos de libros sobre el tema "Manufacture and works"
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Kurti, Nicholas. "B1 (1942) Improvement in the Manufacture of Permanent Magnets." In Selected Works of Louis Neel. CRC Press, 2019. http://dx.doi.org/10.1201/9780367810580-42.
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Mallinson, Jonathan. "6. 1913–14: A New Beginning." In William Moorcroft, Potter. Open Book Publishers, 2023. http://dx.doi.org/10.11647/obp.0349.06.
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We consider the practical difficulties faced by Moorcroft in his first year at the new factory, built to a tight budget and at high speed. The move to full production was inevitably slow, and the consequential financial pressures were compounded by continuing disputes with Watkin about the market value of stock which Moorcroft bought from Macintyre’s. Drawing on contemporary documents and ledgers, we examine the design of the new works and its informed compliance with the ‘Regulations for the Manufacture and Decoration of Pottery’, enacted in 1913. Its distinctiveness, though, lay not just its compliance, but in its working environment, quite different from both industrial manufactories and smaller-scale art potteries. Closer to a studio, it was defined and energised by Moorcroft himself, who played an active role in all aspects of design and production, management and marketing, supported in this by his wife, Florence Lovibond, one of the first Women Factory Inspectors. This unique atmosphere was immediately noticed by reviewers, and written about in terms which implicitly linked it to the Arts and Crafts movement. We contrast it with Fry’s Omega Workshops, another variant on the Morris legacy, established at the same time. Moorcroft’s enterprise is seen to be both more personal and less exclusive, with a mission to create an ‘everyday art’ for more than a select few.
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Smallwood, John. "Construction Ergonomics: Temporary Works’ Manufacturers’ Perceptions and Practices." In Advances in Intelligent Systems and Computing. Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-20145-6_49.
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Cartlidge, Duncan. "Construction and Manufacture / RIBA Plan of Work Stage 5." In Construction Project Manager’s Pocket Book, 3rd ed. Routledge, 2024. http://dx.doi.org/10.1201/9781003482086-3.
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Haar, Christoph, Hangbeom Kim, and Lukas Koberg. "AI-Based Engineering and Production Drawing Information Extraction." In Lecture Notes in Mechanical Engineering. Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-18326-3_36.
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AbstractThe production of small batches to single parts has been increasing for many years and it burdens manufacturers with higher cost pressure. A significant proportion of the costs and processing time arise from indirect efforts such as understanding the manufacturing features of engineering drawings and the process planning based on the features. For this reason, the goal is to automate these indirect efforts. The basis for the process planning is information defined in the design department. The state of the art for information transfer between design and work preparation is the use of digital models enriched with additional information (e.g. STEP AP242). Until today, however, the use of 2D manufacturing drawings is widespread. In addition, a lot of knowledge is stored in old, already manufactured components that are only documented in 2D drawings. This paper provides an AI(Artificial Intelligence)-based methodology for extracting information from the 2D engineering and manufacturing drawings. Hereby, it combines and compiles object detection and text recognition methods to interpret the document systematically. Recognition rates for 2D drawings up to 70% are realized.
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Papatheocharous, Efi, David Buffoni, Matthias Maurer, Anders Wallberg, and Gonzalo Ezquerro. "Driver Distraction Detection Using Artificial Intelligence and Smart Devices." In Intelligent Secure Trustable Things. Springer Nature Switzerland, 2024. http://dx.doi.org/10.1007/978-3-031-54049-3_16.
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AbstractDistracted driving is known to be one of the leading causes of vehicle accidents. With the increase in the number of sensors available within vehicles, there exists an abundance of data for monitoring driver behaviour, which, however, has so far only been comparable across vehicle manufacturers to a limited extent due to proprietary solutions. A special role in distraction is played by smart devices, usually used while driving, such as smartphones and smartwatches. They are repeatedly a source of distraction for drivers through calls, messages, notifications and apps usage. However, such devices can also be used for driver behaviour monitoring (like driver distraction detection), as current developments show. As vehicle manufacturer-independent devices, which are usually equipped with adequate sensor technology, they can provide significant advantages and opportunities. This work illustrates the opportunities in using smartphones and wearables to detect driver distraction. The overall architecture description of the concept, called Smart Devices Distracted Driving Detection, is presented together with a series of initial experiments of a proof-of-concept. Artificial Intelligence and more especially Machine Learning is used to assess driving distractions using smart devices in a comprehensive manner.
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Lu, Xianke. "Conclusions and Future Work." In Fluid Flow and Heat Transfer in Porous Media Manufactured by a Space Holder Method. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-53602-2_6.
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"Case Studies: IMOLD® and IMOLD-Works for Mold Design." In Computer-Aided Injection Mold Design and Manufacture. CRC Press, 2004. http://dx.doi.org/10.1201/b16948-15.
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Raitz, Karl. "Complementary Industries." In Bourbon's Backroads. University Press of Kentucky, 2019. http://dx.doi.org/10.5810/kentucky/9780813178424.003.0006.
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Kentucky distillers bought white oak barrels from local coopers or established dedicated cooperages near their works. Coopers worked in independent shops as owners or employees, in larger urban commercial shops with a dozen or more employees, or in dedicated shops owned by distilleries. Stills were initially made by self-taught coppersmiths, but skilled professionals dominated the industrial manufacture of high-capacity copper distilling equipment. Copper was comparatively rare and expensive and was often recycled from naval and maritime shipping or vessel and machinery manufacturers.
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Fennell, Christopher C. "Making and Harvesting Commodities." In The Archaeology of Craft and Industry. University Press of Florida, 2021. http://dx.doi.org/10.5744/florida/9780813069043.003.0002.
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Many businesses manufactured, harvested, or processed natural and human-made commodities. Archaeological studies of such goods tend to focus on the use and disposal of those products. Analysis has also focused on changes in manufacturing methods evident in the attributes of those discarded objects. This chapter instead highlights archaeological investigations of the production sites. Such projects have been relatively few in number compared to studies of products themselves in end-user contexts. As a result, the sample of case studies presented here represents actual archaeology projects on work sites that were completed and published, rather than an idealized selection of historical subjects. This chapter’s survey considers early textile mills, the blessing and curse of new rails for pottery production, and the material culture of glass works and cutlery manufacture. Other projects examine saddletree production, seafood commodities in local and international markets, bakery and cheese suppliers, interactions of artisans and beer bottling in an armoury town, and family-run binderies and tanneries.
Actas de conferencias sobre el tema "Manufacture and works"
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Wielage, B., M. Zschunke, A. Henker, and S. Steinhäuser. "Manufacture and Characterization of Particle Reinforced Aluminum Coatings." In ITSC 1996, edited by C. C. Berndt. ASM International, 1996. http://dx.doi.org/10.31399/asm.cp.itsc1996p0333.
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Abstract For reasons of the decrease in weight in the industry light cage design materials like aluminum alloys are frequently used. Because the wear resistance of aluminum alloys and/or aluminum generally is not sufficient, an increased wear resistance can be reached by means of particle reinforced aluminum coatings. The installation of ceramic reinforcing components (for example oxide particles) in the ductile metal matrix brings an essential improvement of the wear resistance particularly with regard to abrasion and short time fatigue wear. The results presented in the paper refer to research works concerning thermally sprayed Al - coatings with Al2O3- and SiC - particles as reinforcement components by vacuum plasma spraying.
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Fang, Yanqing. "Research on the Copyright Protection of Open Source Code and Its Derivative Software Works Based on Internet and Information Technology." In AIAM2021: 2021 3rd International Conference on Artificial Intelligence and Advanced Manufacture. ACM, 2021. http://dx.doi.org/10.1145/3495018.3495376.
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Àlvarez, Ana, Anthony René Ango, Eric Alexis Suárez del Villar, Eric Martinez, and Roxana Moreira Alvarez. "Modeling of the laminating machine based on ergonomic studies for the manufacture of marzipan handicrafts." In Intelligent Human Systems Integration (IHSI 2022) Integrating People and Intelligent Systems. AHFE International, 2022. http://dx.doi.org/10.54941/ahfe100932.
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The value that the human resource represents within any organization, appears as an essential element with a strategic direction that, together with a machine, opens the way to productive efficiency. The objective of this research was the modeling of a semi-automatic laminating machine that allows to increase the homogeneity of the dough, optimization of the times from 10 to 3 minutes, and reduction of efforts that the elderly craftsman made to reduce the thickness of the dough, which is then used to make marzipan handicrafts (figures) in the parish of Calderón, Quito -Ecuador. These handicrafts are made manually in the country, this art being part of the culture and tradition. The modeling was carried out in the Solid-Works Software for Windows and the ergonomic studies were carried out using the OWAS method (Ovako Working Posture Analyzing System) and the OCRA Check List, evaluating the risk of repetitive work, considering risk factors such as: repetitiveness that present Medium unacceptable risk , forced postures for sequential postures the level of risk is low, forces lifting the mass of 3 kg and the lack of breaks in the handling of the raw material because it cools down in about 15 minutes. It is feasible to use an adequate technology within this production process because it is designed with special attention to the cultural and economic aspects of the community of marzipan artisans.
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Трейстер, М. Ю. "A Diadem from the Khokhlach Burial-mound. Reflections on the center of manufacture." In Древности Боспора. Crossref, 2023. http://dx.doi.org/10.25681/iaras.2020.978-5-94375-339-8.381-410.
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In the focus of the article is a diadem from a Sarmatian burial in the Khokhlach Burialmound in Novocherkassk on the Lower Don, most likely dating from the late 1st – early 2nd century AD. The unique construction and decoration of the diadem is a combination of typical Hellenistic elements with elements characteristic of Sarmatian art.The author examines the constructive features of the diadem, gold cells with inlays, decorating it, the design of the edges of the plates with pearls strung on a wire, amphora-shaped pendants, suspended from the diadem. Particular attention is paid to the central element of the diadem – a secondary-used bust of the goddess, a late Hellenistic amethyst cameo in the original gold setting, and with some additions made during the creation of the diadem. Also, most likely, to the 2nd–1st centuries BC dates back the figurine of Eros playing the flute, used in the decoration of the diadem, adapted from a pendant of an earring. Round figures of birds with filigree settings on the wings, placed along the upper edge of the diadem, are compared with figures of birds on the handles of silver vessels and vessel lids from the Sarmatian complexes in the Crimea and the Lower Volga region. Two other bird figures, placed in the central parts of the side plates of the diadem, with their bodies and heads shown en face in high relief, with inlays of coral and turquoise, are made in a different style and are compared with finds from Iran. In general, the Khokhlach diadem can be described as a product of the 1st century AD, most likely its second half, designed for the tastes of a nomadic client, made with the secondary use, including alterations and additions, of “antiquarian” elements of Late Hellenistic decorations (cameo, figurine of Eros, gold settings with inlays). I.P. Zasetskaya, noting the mixture of artistic styles in the decorative design of the diadem, does not give an unambiguous answer to the question, of where the diadem could had been made, not excluding the possibility of its manufacture, neither in the Bosporus, nor “in one of the centers of Asia Minor, ... in Syria, or even farther east, for example, in Parthia”. It is difficult for the author to imagine the possibility of such a contact when ordering a diadem in Syria or Asia Minor. As for Parthia as a possible center for diadem-manufacture, it is more likely than Syria or Asia Minor, however, there is no evidence that dissimilar stylistic elements or elements of antiquarian jewelry were used in Parthian minor arts. On the contrary, just these features characterize jewelry and works of toreutics from the North Pontic area and from the Bosporus, in particular, where already in the second half of the 2nd century BC the practice of using elements of other items in the repair of jewelry was used. Inlays of intaglios made by a Bosporan stone-cutting workshop in a phalera from the cache in the Burialmound near the village of Dachi, chronologically and geographically close to the Khokhlach barrow, indirectly confirm the possibility of making of the Khoklach diadem in the Bosporan workshop. There are also presented the data on the possibility of manufacturing in the Bosporus in the 1st century AD also of the other works of toreutics from the burials of the Sarmatian elite of the Don region.
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Dwivedi, Suren N., and Pinkeshkumar J. Attarwala. "Design for Manufacture and Assembly Lean and Product Development Through Industrial Case Study." In ASME 2012 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/imece2012-93452.
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Lean is a key process that understands customer value and its goal is to provide perfect value to the customer by engaging a process cycle that minimizes waste. This paper focuses on the implementation of Lean in the Design and Manufacturing Industries. The complex interactions of the financial, logistical, and geological processes that are involved in developing a product and then handing it over to customers are driving forces in today’s industries. Hence, if industries do not implement Lean, product cost will rise. Lean design involves identifying wastage in the processes of product manufacturing/production. This means, specifically, eliminating waste and non-value-added activities in design, production, marketing, supply chain integration and customer interactions by making product flow through the Value Stream without any interruption. Our goal is to minimize production resources by eliminating non-value-added activities, thus saving time in production and improving product quality. The basic goal behind this paper is to reduce product cost by eliminating unnecessary elements that increase final product cost. This will be demonstrated by way of manufacturing a fuel tank by removing or redesigning the parts now used by the current industry. The paper also will show how Virtual Reality plays a key role in helping students and engineers to learn applications and to understand simulation more effectively. It is a powerful learning tool for both engineers and students. The paper will emphasize the development of active learning experiences in relation to Lean Product Development. The different models that are developed in this paper will help students and engineers to gain knowledge in various streams like Engineering, Business and Sciences, with the aid of Virtual Reality. This paper concentrates mainly on undergraduate and graduate students. Solid Works, one of the more common and available tools in most U.S. schools, is utilized as a software that allows users to change product designs on their own, so as to get better results. After learning these tools, users will be able to apply their skills in various industries to reduce non-value-added activities. Developing Lean Manufacturing models using Virtual Reality will increase any user’s capability, quality and efficiency in Product Development.
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Zhong, Zhimin, Jian Min, and Kai Li. "Codes Comparison and Analysis of Weld Cladding Ultrasonic Testing in Nuclear Power Plants." In 2013 21st International Conference on Nuclear Engineering. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/icone21-15086.
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This paper briefly introduces the weld cladding structure, its common defects during the manufacture and operation stage and its application in pressurized water reactor nuclear power plants. Some ultrasonic testing codes or standards for nuclear power plant pressure vessel or piping, such as ASME BPVC volume V & III & XI, Germany KTA 3201.3 and 3201.4 code, France RCC-M and RSE-M code, and Russia code of light water nuclear power plants were discussed. The difference of those codes and some feed backs have been analyzed and discussed. Furthermore, these works really benefit the compiling of NB/T 20003.2-2010, Non-destructive Testing for Mechanical Components in Nuclear Island of Nuclear Power Plants-Part 2: Ultrasonic Testing, as China building more and more nuclear power plants. It was concluded that we shall pay more attention to the inspection of cladding, not only at manufacture stage but in operation outage stage. One of important work is periodically updating the inspection standard revision. It was believed that improving the cladding defects inspection reliability and effectiveness is very important to the safety of nuclear power plants operation in China and in the world.
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Teixeira Alves, Joe¨l, Miche`le Guingand, and Jean-Pierre de Vaujany. "Designing and Manufacturing Spiral Bevel Gears Using 5-Axis CNC Milling Machines." In ASME 2011 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2011. http://dx.doi.org/10.1115/detc2011-47166.
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The design of spiral bevel gears still remains complex since tooth geometry and the resulting kinematics performance stem directly from the manufacturing process. Spiral bevel gear manufacture owes most to the works of Gleason and Klingelnberg. However, recent advances in milling machine technology and CAM (Computer Aided Manufacturing) make it possible to manufacture good quality spiral bevel gears on a standard 5-axis milling machine. This paper describes the CAD definition and manufacturing of spiral bevel gear tooth surfaces. Process performance is assessed by comparing the resulting surfaces after machining with the pre-defined CAD surfaces. Using this manufacturing process allows to propose new type of geometry. This one is more theoretical and, in some respects, easier to design than the standard spiral bevel gear as it enables simpler mesh optimization. The latter can be achieved by using the model of meshing under load recalled in this paper.
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Coppard, Rémi, Pascal Coulon, Yoichi Koyama, and Masaki Endo. "Impact of Carbon Macrosegregation on the Mechanical Properties of Low-Alloy Steel Forgings." In ASME 2019 Pressure Vessels & Piping Conference. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/pvp2019-94059.
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Abstract Macrosegregation in large steel ingots is a known phenomenon: it corresponds to an uneven distribution of alloying elements in the bulk of the as-solidified ingot, over macroscopic scales, caused by the difference in solubility of these elements in the liquid and solid phases. As the ingot solidifies, these elements (mainly carbon, sulfur and phosphorus) concentrate in the liquid phase and are carried to the top of the ingot by convective currents. This process produces large regions of heterogeneity that can negatively impact the mechanical properties of the resulting steel. Westinghouse is in charge of the manufacture of twelve steam generators (SG) for Electricité de France (EDF), for which the main forged parts are made of 20MND5 low alloy steel. Due to the context and concerns in France, and more broadly in the nuclear industry, on carbon macrosegregation in large scale forgings, Westinghouse led studies with the forgemaster The Japan Steel Works (JSW) in order to assess the influence of carbon content on mechanical properties of such forgings. The present paper aims at introducing the investigation work carried out by Westinghouse, in partnership with JSW, in order to analyze the effect of increasing carbon on the 20MND5 low-alloy steel tensile and impact toughness properties. This work was performed through: - A thorough review of the existing literature; - The manufacture of forged plates mock-ups, metallurgically representative of the SG channel head, containing various carbon contents (namely 0.18wt.%, 0.21wt.%, 0.26wt.% and 0.29wt.%); - The testing of above plates to assess the evolution of tensile (tensile strength Rm, 0.2% yield strength Rp0.2 and percentage elongation after fracture) and impact properties (absorbed energy and transition temperature).
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Beris, Yeter, and İsmail Erim Gulacti. "Influences of Japanese prints on European printmaking (in the case of Degas-Manzi partnership)." In 10th International Symposium on Graphic Engineering and Design. University of Novi Sad, Faculty of technical sciences, Department of graphic engineering and design,, 2020. http://dx.doi.org/10.24867/grid-2020-p69.
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Contemporary artists have included classical methods together with innovative digital printing technologies to their artistic manufactures and thus their technological production interactions have been reflected on current art as well. Today’s artists have also been in collaboration with each other by involving the digital printing technologies which kept advancing during the recent 20 years in their works of art just like Degas and Manzi did in their relationships of production partnerships in 19th Century. Besides, those opinions which originated from modernism ideas and movements consist of the core of this cooperation post Industrial Revolution era. Therefore, the concept of nationalism, the devastating consequences of the world wars and the latest industrial and technological advancements have all transformed human life irreversibly. Consequently, during this transformation era, various significant movements of art such as Impressionism and Expressionism emerged in the 20th century and representatives of those art movements substituted such a lot of printmaking practices in their works of art. None of those mentioned above took place in other previous movements of art. They reflected their points of view that they display social movements and none of the other artists who represent other senses of art have ever exhibited such a lot of printmaking practices. Thus, various printing technologies which present a new laboratory environment to the artists. As a result of this, printing technologies have been preferred as a sort of new artistic media value and it started to take its prominent place in collections of art as well as in museums during artistic presentations. Within this context, this article aims at studying the phenomenon of art by considering how it has changed during the historical process by examining those works of art which reveal these variations. Common production and working techniques in traditional printmaking, contributions of the technological advantages to the artistic manufacture. Besides, periodical innovations will be examined and presented by introducing an updated point of view to the topic within the content of this article that contain some citations from the second part of the thesis titled “Effects of fine art printmaking on the phenomenon of contemporary art”.
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Salary, Roozbeh Ross, Jack P. Lombardi, Darshana L. Weerawarne, Prahalad K. Rao, and Mark D. Poliks. "A State-of-the-Art Review on Aerosol Jet Printing (AJP) Additive Manufacturing Process." In ASME 2019 14th International Manufacturing Science and Engineering Conference. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/msec2019-3008.
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Abstract The goal of this work is to forward a comprehensive framework, relating to the most recent research works carried out in the area of flexible and hybrid electronics (FHE) fabrication with the aid of aerosol jet printing (AJP) additive manufacturing process. In pursuit of this goal, the objective is to review and classify a wide range of articles, published recently, concerning various aspects of AJP-based device fabrication, such as material synthesis, process monitoring, and control. AJP has recently emerged as the technique of choice for integration as well as fabrication of a broad spectrum of electronic components and devices, e.g., interconnects, sensors, transistors, optical waveguides, quantum dot arrays, photodetectors, and circuits. This is preeminently because of advantages engendered by AJP process. AJP not only allows for high-resolution deposition of microstructures, but also accommodates a wide renege of ink viscosity. However, AJP is intrinsically complex and prone to gradual drifts of the process output (stemming from ink chemistry and formulation). Consequently, a large number of research works in the literature has focused on in situ process characterization, real-time monitoring, and closed-loop control with the aim to make AJP a rapid, reliable, and robust additive manufacturing method for the manufacture of flexible and hybrid electronic devices. It is expected that the market for flexible electronics will be worth over $50 billion by 2020 [1].
Informes sobre el tema "Manufacture and works"
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Oldsman, Eric. Making Business Development Work: Lessons from the Enterprise Development Center in Rafaela, Argentina. Inter-American Development Bank, 2000. http://dx.doi.org/10.18235/0008631.
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This article examines the Enterprise Development Center (EDC) Rafaela-Esperanza's operating efficiency, financial self-sufficiency, coverage, and effectiveness. In general, EDCs must balance generating revenues, achieving market penetration and producing positive impacts for small manufacturers.
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Jankowski, Alan. A Constitutive Structural Parameter for the Work Hardening Behavior of Additively Manufactured Ti-6Al-4V. Office of Scientific and Technical Information (OSTI), 2021. http://dx.doi.org/10.2172/1784598.
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Sheets and Alexander. PR-201-114508-R01 Evaluation of Composite Systems for Subsea Pipeline Repairs. Pipeline Research Council International, Inc. (PRCI), 2015. http://dx.doi.org/10.55274/r0010157.
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This project evaluates the use of composite materials for reinforcing corroded subsea pipelines. All repair work was done underwater and pipe samples were pressurized during the duration of testing. After the designated hold period of 10,000 hours (approximately 420 days), the samples were removed from service and subjected to destructive testing involving different combinations of internal pressure, axial tension, and bending. The study involved the participation of four composite repair manufacturers including Air Logistics, Armor Plate, Inc. Neptune Research, Inc., and Walker Technical Resources. These manufacturers provided materials, personnel for performing the installations, and financial contributions to the study.
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Siebenaler, Shane. PR-015-093709-R01 Evaluation of External Leak Detection Systems - Laboratory Work. Pipeline Research Council International, Inc. (PRCI), 2011. http://dx.doi.org/10.55274/r0010445.
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A previous PRCI project (PR-015-084510, 2009) identified distributed temperature sensing (DTS) and acoustic emissions as potentially viable technologies for the detection of small leaks in liquid pipelines. Much of the assessment that led to this conclusion was based upon manufacturer-generated literature. However, there is a lack of existing, publicly-available test data on these technologies as they relate to detecting small leaks in liquid pipelines. Such data are needed by pipeline operators in order to determine the value in supplementing their existing leak detection systems with one of these technologies. The long-term goal of the PRCI team providing oversight to this work is to conduct full-scale field testing of these technologies. However, it is first important to determine the parameters that affect performance in order to design the large-scale testing and to identify conditions for which the technologies are not suitable. A project encompassing analysis and laboratory testing of DTS systems and modeling of acoustic emissions systems was conducted. Includes some analysis of different liquids including crude oil, propane, gasoline, and carbon dioxide.
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Chefetz, Benny, Baoshan Xing, Leor Eshed-Williams, Tamara Polubesova, and Jason Unrine. DOM affected behavior of manufactured nanoparticles in soil-plant system. United States Department of Agriculture, 2016. http://dx.doi.org/10.32747/2016.7604286.bard.
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The overall goal of this project was to elucidate the role of dissolved organic matter (DOM) in soil retention, bioavailability and plant uptake of silver and cerium oxide NPs. The environmental risks of manufactured nanoparticles (NPs) are attracting increasing attention from both industrial and scientific communities. These NPs have shown to be taken-up, translocated and bio- accumulated in plant edible parts. However, very little is known about the behavior of NPs in soil-plant system as affected by dissolved organic matter (DOM). Thus DOM effect on NPs behavior is critical to assessing the environmental fate and risks related to NP exposure. Carbon-based nanomaterials embedded with metal NPs demonstrate a great potential to serve as catalyst and disinfectors. Hence, synthesis of novel carbon-based nanocomposites and testing them in the environmentally relevant conditions (particularly in the DOM presence) is important for their implementation in water purification. Sorption of DOM on Ag-Ag₂S NPs, CeO₂ NPs and synthesized Ag-Fe₃O₄-carbon nanotubebifunctional composite has been studied. High DOM concentration (50mg/L) decreased the adsorptive and catalytic efficiencies of all synthesized NPs. Recyclable Ag-Fe₃O₄-carbon nanotube composite exhibited excellent catalytic and anti-bacterial action, providing complete reduction of common pollutants and inactivating gram-negative and gram-positive bacteria at environmentally relevant DOM concentrations (5-10 mg/L). Our composite material may be suitable for water purification ranging from natural to the industrial waste effluents. We also examined the role of maize (Zeamays L.)-derived root exudates (a form of DOM) and their components on the aggregation and dissolution of CuONPs in the rhizosphere. Root exudates (RE) significantly inhibited the aggregation of CuONPs regardless of ionic strength and electrolyte type. With RE, the critical coagulation concentration of CuONPs in NaCl shifted from 30 to 125 mM and the value in CaCl₂ shifted from 4 to 20 mM. This inhibition was correlated with molecular weight (MW) of RE fractions. Higher MW fraction (> 10 kDa) reduced the aggregation most. RE also significantly promoted the dissolution of CuONPs and lower MW fraction (< 3 kDa) RE mainly contributed to this process. Also, Cu accumulation in plant root tissues was significantly enhanced by RE. This study provides useful insights into the interactions between RE and CuONPs, which is of significance for the safe use of CuONPs-based antimicrobial products in agricultural production. Wheat root exudates (RE) had high reducing ability to convert Ag+ to nAg under light exposure. Photo-induced reduction of Ag+ to nAg in pristine RE was mainly attributed to the 0-3 kDa fraction. Quantification of the silver species change over time suggested that Cl⁻ played an important role in photoconversion of Ag+ to nAg through the formation and redox cycling of photoreactiveAgCl. Potential electron donors for the photoreduction of Ag+ were identified to be reducing sugars and organic acids of low MW. Meanwhile, the stabilization of the formed particles was controlled by both low (0-3 kDa) and high (>3 kDa) MW molecules. This work provides new information for the formation mechanism of metal nanoparticles mediated by RE, which may further our understanding of the biogeochemical cycling and toxicity of heavy metal ions in agricultural and environmental systems. Copper sulfide nanoparticles (CuSNPs) at 1:1 and 1:4 ratios of Cu and S were synthesized, and their respective antifungal efficacy was evaluated against the pathogenic activity of Gibberellafujikuroi(Bakanae disease) in rice (Oryza sativa). In a 2-d in vitro study, CuS decreased G. fujikuroiColony- Forming Units (CFU) compared to controls. In a greenhouse study, treating with CuSNPs at 50 mg/L at the seed stage significantly decreased disease incidence on rice while the commercial Cu-based pesticide Kocide 3000 had no impact on disease. Foliar-applied CuONPs and CuS (1:1) NPs decreased disease incidence by 30.0 and 32.5%, respectively, which outperformed CuS (1:4) NPs (15%) and Kocide 3000 (12.5%). CuS (1:4) NPs also modulated the shoot salicylic acid (SA) and Jasmonic acid (JA) production to enhance the plant defense mechanisms against G. fujikuroiinfection. These results are useful for improving the delivery efficiency of agrichemicals via nano-enabled strategies while minimizing their environmental impact, and advance our understanding of the defense mechanisms triggered by the NPs presence in plants.
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Amend, Bill. PR-186-123716-R01 Analysis of Line Pipe Manufacturing Materials and Construction Practices. Pipeline Research Council International, Inc. (PRCI), 2017. http://dx.doi.org/10.55274/r0011419.
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The objective of this work is to: - Summarize, in spreadsheet format, historical API pipe specification requirements related to metallurgical attributes of the pipe, - Collect pipe property data for a wide range of pipe sizes, grades, and vintages, - Solicit subject matter expert input regarding the likelihood that pipe surface features and other attributes are sufficiently unique to allow pipe manufacturer and/or grade to be unambiguously determined, and to - Describe nondestructive in-situ analysis methods that can be used on operating pipelines to determine metallurgical properties.
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Yoosef-Ghodsi and Zimmerman. L51879 Effect of Y-T Ratio on Mechanical Damage Tolerance for Strain-Limit Pipeline Design. Pipeline Research Council International, Inc. (PRCI), 2008. http://dx.doi.org/10.55274/r0011057.
Texto completoResumen
This work investigates the effect of the yield-to-tensile strength ratio (Y/T) has on the mechanical damage tolerances of steel pipelines subject to high strain loading conditions. The work includes full-scale tests and the development of an analytical model for calculating longitudinal tensile strain capacity. The tests were designed to simulate the type of loading that occurs in a pipeline subjected to a �significant ground movement event, and they involved pressurized tension tests on short, full pipe sections that contained artificially-manufactured, circumferentially-oriented dent-gouge defects. A total of 26 tests were performed on pipe specimens with Y/T values ranging from 0.81 to 0/93 and Charpy toughness ranging from 64 to 115 J.
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Megas, Katerina N., Michael Fagan, and David Lemire. Workshop Summary Report for “Building the Federal Profile for IoT Device Cybersecurity” Virtual Workshop. National Institute of Standards and Technology, 2021. http://dx.doi.org/10.6028/nist.ir.8322.
Texto completoResumen
This report summarizes the feedback received on the work of the NIST Cybersecurity for IoT program on device cybersecurity at a virtual workshop in July 2020. NISTIR 8259, Foundational Cybersecurity Activities for IoT Device Manufacturers and NISTIR 8259A, IoT Device Cybersecurity Capability Core Baseline provide general guidance on how manufacturers can understand and approach their role in supporting customers’ cybersecurity needs and goals. As discussed in those documents, specific sectors and use cases may require more specific guidance than what is included in NISTIR 8259A’s core baseline for IoT devices. NIST conducted the virtual workshop “Building the Federal Profile for IoT Device Cybersecurity” to discuss and gather community input on the creation of a federal profile of the core baseline for use by federal agencies. This publication provides a summary of the workshop. The baseline will be published in NISTIR 8259D, Profile of the IoT Core Baseline for the Federal Government.
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Fazeli, Fateh. PR-631-174506-R01 Substandard Properties in Pipeline Fittings and Flanges. Pipeline Research Council International, Inc. (PRCI), 2019. http://dx.doi.org/10.55274/r0011560.
Texto completoResumen
Some instances of substandard high yield (42-80 ksi) fittings and flanges have been reported over the past few years in Canada and the USA. In response, PRCI launched project MAT-7-1 to investigate some of the potential metallurgical causes of this issue. The main activities in this project included a survey of operators and manufacturers, a review of the scientific literature pertinent to the metallurgy of fittings and flanges, a critical review of the relevant MSS and CSA manufacturing standards, as well as a summary of proposed changes for MSS-SP-44 that have been recommended by API Sub Committee 21 (Materials work-ing group on pipeline flange and fitting quality). The report provides information, which should be useful for operators and manufacturers on the metallurgy pertinent to the manufacturing of fittings and flanges. The information should also help to improved stand-ard practices, as well as the quality and reliability of pipeline fittings and flanges. This document has a related webinar.
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Botulinum Neurotoxin-Producing Clostridia, Working Group on. Report on Botulinum Neurotoxin-Producing Clostridia. Food Standards Agency, 2023. http://dx.doi.org/10.46756/sci.fsa.ozk974.
Texto completoResumen
In 1992 a working group of the UK Advisory Committee on the Microbiological Safety of Food presented a report on Vacuum Packaging and Associated Processes regarding the microbiological safety of chilled foods. The report supported subsequent guidance provided by the UK Food Standards Agency for the safe manufacture of vacuum packed and modified atmosphere packed chilled foods. In 2021 the ACMSF requested that a new subgroup should update and build on the 1992 report as well as considering, in addition to chilled foods, some foods that are intended to be stored at ambient temperatures. The new subgroup agreed a scope that includes the conditions that support growth and/or neurotoxin formation by C. botulinum, and other clostridia, as well as identification of limiting conditions that provide control. Other foodborne pathogens that need to be considered separately and some foods including raw beef, pork and lamb were explicitly excluded. The subgroup considered the taxonomy, detection, epidemiology, occurrence, growth, survival and risks associated with C. botulinum and other neurotoxin-forming clostridia. There has been no significant change in the nature of foodborne botulism in recent decades except for the identification of rare cases caused by neurotoxigenic C. butyricum, C. baratii and C. sporogenes. Currently evidence indicates that non-clostridia do not pose a risk in relation to foodborne botulism. The subgroup has compiled lists of incidents and outbreaks of botulism, reported in the UK and worldwide, and have reviewed published information concerning growth parameters and control factors in relation to proteolytic C. botulinum, non-proteolytic C. botulinum and the other neurotoxigenic clostridia. The subgroup concluded that the frequency of occurrence of foodborne botulism is very low (very rare but cannot be excluded) with high severity (severe illness: causing life threatening or substantial sequelae or long-term illness). Uncertainty associated with the assessment of the frequency of occurrence, and with the assessment of severity, of foodborne botulism is low (solid and complete data; strong evidence in multiple sources). The vast majority of reported botulism outbreaks, for chilled or ambient stored foods, are identified with proteolytic C. botulinum and temperature abuse is the single most common cause. In the last 30 years, in the UK and worldwide where a cause can be identified, there is evidence that known controls, combined with the correct storage, would have prevented the reported incidents of foodborne botulism. The subgroup recommends that foods should continue to be formulated to control C. botulinum, and other botulinum neurotoxin-producing clostridia, in accordance with the known factors. With regard to these controls, the subgroup recommends some changes to the FSA guidelines that reflect improved information about using combinations of controls, the z-value used to establish equivalent thermal processes and the variable efficacy associated with some controls such as herbs and spices. Current information does not facilitate revision of the current reference process, heating at 90°C for 10 minutes, but there is strong evidence that this provides a lethality that exceeds the target 6 order of magnitude reduction in population size that is widely attributed to the process and the subgroup includes a recommendation that the FSA considers this issue. Early detection and connection of cases and rapid, effective coordinated responses to very rare incidents are identified as crucial elements for reducing risks from foodborne botulism. The subgroup recommends that the FSA works closely with other agencies to establish clear and validated preparedness in relation to potential major incidents of foodborne botulism in the UK.