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Готові списки джерел за темами / Integrity of material / Статті в журналах

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Статті в журналах з теми "Integrity of material"

Автор: Grafiati

Опубліковано: 14 жовтня 2022

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1

Bayes, Martin, and Al Horn. "Effects of conductor surface condition on signal integrity." Circuit World 30, no. 3 (September 1, 2004): 11–16. http://dx.doi.org/10.1108/03056120410520551.

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The evolution of digital electronic systems to ever‐faster pulse rise times has placed increased demands on printed wiring board (PWB) materials. Signal loss associated with dielectric materials has driven development and commercialization of cost‐effective low loss laminate materials. In order to provide a better understanding of conductor material and surface finish choices, efforts have been made to quantify the impacts of these factors on loss. An alternative test approach has been identified which provides a measure of conductor performance, decoupled from both system geometry and the influence of laminate material.

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2

Madl, Jan, Vitezslav Razek, Vaclav Koutny, and Jindrich Kafka. "Surface Integrity in Notches Machining." Key Engineering Materials 496 (December 2011): 176–81. http://dx.doi.org/10.4028/www.scientific.net/kem.496.176.

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Precision machining of soft and hardened materials is a topic of high interest to substitute some traditional operations. This paper deals with some aspects of the precision machining of notches. All machining processes result in changes of surface layer properties. There are changes in residual stresses, in harness, changes in material structure etc. and also in surface accuracy and surface roughness. All these characteristics may affect fatigue cracks in machined parts.

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3

Prabowo, Aditya Rio, Ubaidillah, and Fitrian Imaduddin. "Editorial: Integrity of Mechanical Structure and Material." Procedia Structural Integrity 27 (2020): 1–5. http://dx.doi.org/10.1016/j.prostr.2020.07.001.

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4

Burrows, Adria Michelle, Mohaimin Kasu, and Maria E. D’Amato. "Preservation of DNA integrity in biological material." Forensic Science International: Genetics Supplement Series 7, no. 1 (December 2019): 416–18. http://dx.doi.org/10.1016/j.fsigss.2019.10.034.

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5

Haralambous, Nicola. "Juries and Extraneous Material: A Question of Integrity." Journal of Criminal Law 71, no. 6 (December 2007): 520–33. http://dx.doi.org/10.1350/jcla.2007.71.6.520.

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This article challenges the unconditional faith seemingly placed on juries by the judiciary. Despite the prohibition on investigation into jury deliberations, a number of important cases have come to light which invite questions on the extent to which we can be sure that juries follow judicial directions. This article explores the recent case law in which juries may have relied upon extraneous material or other external influences and, finally, briefly compares such impropriety with the use of jurors with specialised knowledge.

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6

Kellam, Barbara, Deborah E. Fraze, and Keith S. Kanarek. "Central Line Dressing Material and Neonatal Skin Integrity." Nutrition in Clinical Practice 3, no. 2 (April 1988): 65–68. http://dx.doi.org/10.1177/011542658800300265.

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7

Jawahir, I. S., E. Brinksmeier, R. M'Saoubi, D. K. Aspinwall, J. C. Outeiro, D. Meyer, D. Umbrello, and A. D. Jayal. "Surface integrity in material removal processes: Recent advances." CIRP Annals 60, no. 2 (2011): 603–26. http://dx.doi.org/10.1016/j.cirp.2011.05.002.

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8

Rösler, J. "Mechanical Integrity of Thermal Barrier Coated Material Systems." Advanced Engineering Materials 7, no. 1-2 (February 2005): 50–54. http://dx.doi.org/10.1002/adem.200400136.

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9

Pramanik, Md Kamruzzaman, Abdul Bathen Miah, and Md Khorshed Alam. "Disinfection of Archived Material by Radiation Processing Technology Keeping the Material Integrity." Bangladesh Journal of Microbiology 33, no. 1-2 (December 31, 2018): 1–4. http://dx.doi.org/10.3329/bjm.v33i1.39595.

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Анотація:

The aim of the study was to preserve paper-based archived material for a long period of time using ionizing radiation/nuclear technique. To conduct this research, old note-pad samples were selected as tentative archived material. Samples were prepared and irradiated at a series of radiation doses e.g. 0, 2.0, 4.0, 6.0, 8.0, 10.0 and 14.0 kGy at a dose rate of 12.8 kGy/h from panaromic Batch type 80 kCi 60Co source. After irradiation, different quality parameters such as microbiological (Total Viable Bacterial Count, Total Fungal Count), mechanical (Tensile Strength, Percent of Elongation at Break and Elastic Modulus) and color properties (L-value, a-value and b-value) of the samples were assessed to observe the immediate effect of ionizing radiation on these properties. Results showed that the total bacterial count of unirradiated (control) paper were 4.0X102 cfu/g and radiation dose of 2.0 kGy was enough to eliminate the microbial load completely. Among mechanical properties, tensile strength (TS) of unirradiated sample was 16.23 MPa and it was gradually increased as the dose increased and finally reached upto 18.99 MPa at a dose of 14 kGy causing the TS-change above significant level (p < 0.05). Though changes of percent of elongation at break (EB) due to irradiation was insignificant, elastic module (EM) increased as the radiation dose increased gradually. EM of non irradiated sample was 381.85N/m2 and it started changing significantly from 6.0 kGy and finally reaches upto 477.03 N/m2 at 14.0 kGy. Results showed that L-value of colour parameter changed very slightly though a and b-value changed significantly from 6.0 kGy. From these findings it can be inferred that a radiation dose of 4.0 kGy might be used to conserve the cultural heritage including valuable paper-based archived materials. Bangladesh J Microbiol, Volume 33, Number 1-2, June-Dec 2016, pp 1-4

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10

Timbrell, Chris, Ramesh Chandwani, and Chun Lei Ma. "Demonstrating Structural Integrity under Challenging Load and Material Conditions." Key Engineering Materials 795 (March 2019): 439–50. http://dx.doi.org/10.4028/www.scientific.net/kem.795.439.

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Since the industrial revolution when a German mining engineer August Wohler first studied the frequent breaking of chains causing several casualties and developed the concept of what we now know as the S-N curve, many experimental, theoretical and software-aided simulation techniques have been developed to study ageing material behaviour and to design new materials. Over time the demands placed on new materials have required operation under more severe temperatures and loads in order to conserve natural resources and minimise emissions. Fracture mechanics based finite element algorithms to simulate 3D cracks in components / structures have proved very useful in assessing the residual life and developing repair and maintenance strategies as mandatorily required by various licensing authorities for the continuous operation of infrastructure projects in Aerospace, Power, Transportation, Oil and Chemical industries under the ever more demanding operating conditions. Here one such software tool for crack simulation of industrial applications is presented with examples including combined fatigue and time dependent crack growth under thermo-mechanical loading including hold-time and weld defect assessment with inclusion of dis-similar materials.

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11

Bejjani, Roland, Erik Bamford, Stefan Cedergren, Andreas Archenti, and Amir Rashid. "Variations in the Surface Integrity of Ti-6Al-4V by Combinations of Additive and Subtractive Manufacturing Processes." Materials 13, no. 8 (April 13, 2020): 1825. http://dx.doi.org/10.3390/ma13081825.

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Additive manufacturing (AM) has recently been accorded considerable interest by manufacturers. Many manufacturing industries, amongst others in the aerospace sector, are already using AM parts or are investing in such manufacturing methods. Important material properties, such as microstructures, residual stress, and surface topography, can be affected by AM processes. In addition, a subtractive manufacturing (SM) process, such as machining, is required for finishing certain parts when accurate tolerances are required. This finish machining will subsequently affect the surface integrity and topography of the material. In this research work, we focused on the surface integrity of Ti-6Al-4V parts manufactured using three different types of AM and finished using an SM step. The aim of this study was to gain an understanding on how each process affects the resulting surface integrity of the material. It was found that each AM process affects the materials’ properties differently and that clear differences exist compared to a reference material manufactured using conventional methods. The newly generated surface was investigated after the SM step and each combination of AM/SM resulted in differences in surface integrity. It was found that different AM processes result in different microstructures which in turn affect surface integrity after the SM process.

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12

Unal, Engin. "Temperature and thrust force analysis on drilling of Glass fiber reinforced plastics." Thermal Science 23, no. 1 (2019): 347–52. http://dx.doi.org/10.2298/tsci180117181u.

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Composite materials are widely used today in many sectors. Glass fiber reinforced plastic composite materials are one of those. Glass fiber reinforced plastic composite materials are preferred due to their high thermal and tensile strength. Although consist of glass fiber reinforced composite materials from multiple layers reduces the machinability of these materials, drilling is a common method of machining for these materials. However, when the drilling parameters are not carefully selected, the material integrity is deteriorated and the desired drilling quality cannot be obtained. In this study, the effect of drilling temperature and thrust force on the material integrity was investigated. The drill bit angle, spindle speed and feedrate parameters are used for the temperature and thrust force analysis.

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13

Mather, Adam, Raymond Cipra, and Thomas Siegmund. "Structural integrity during remanufacture of a topologically interlocked material." International Journal of Structural Integrity 3, no. 1 (March 2, 2012): 61–78. http://dx.doi.org/10.1108/17579861211210009.

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14

Tinianov, Brandon D. "SOUND PROOFING MATERIAL WITH IMPROVED DAMPING AND STRUCTURAL INTEGRITY." Journal of the Acoustical Society of America 134, no. 4 (2013): 3107. http://dx.doi.org/10.1121/1.4824242.

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15

Bergholz, Werner. "Material and structural integrity in nanoelectronics products and beyond." International Journal of Materials and Structural Integrity 1, no. 1/2/3 (2007): 40. http://dx.doi.org/10.1504/ijmsi.2007.013865.

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16

Giannakis, Efstratios, and George Savaidis. "Structural integrity aspects of a lightweight civil unmanned air vehicle." International Journal of Structural Integrity 7, no. 6 (December 5, 2016): 773–87. http://dx.doi.org/10.1108/ijsi-11-2015-0055.

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Анотація:

Purpose The purpose of this paper is to focus on the finite element (FE) analyses undertaken for aerodynamically and structurally optimized design of a modern, lightweight civil unmanned air vehicle (UAV) made fully of composite materials. Design/methodology/approach The FE method has been applied to design and calculate the safety factors of all structural elements of the UAV. Fully parameterized design tools have been developed in the preliminary design phase, allowing automatic reshapes of the skin and the internal structural parts, wherever needed, to achieve optimal structural design, from the point of view of lightweight and structural integrity. Monotonic and fatigue tests have been performed on material specimens with various thicknesses and fibre textures, to verify the material properties used for the FE analyses. The load assumptions were in accordance with the valid international standards. Findings The material tests confirmed the validity of the material properties used within the FE calculations. The calculated safety factors were acceptable for all structural elements and components of the UAV. As a result, a lightweight, structurally optimized design has been achieved, considering the international, standardized specifications assumptions and fulfilling the safety requirements. Practical implications Design engineers may use the outcomes of this work as a guide to achieve optimal lightweight structures ensuring its operational strength using composite, lightweight materials. Originality/value A new, structurally optimized, lightweight aircraft design has been developed, able to accommodate heavy electronic payloads while being able to fly for over ten hours without refuelling. This medium altitude long endurance airplane can overview forests, seas and human trafficking autonomously and economically.

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17

Gelberg, J. Nadine. "Material Matters: Performance Standards Governing New Materials for Sports." MRS Bulletin 23, no. 3 (March 1998): 39–41. http://dx.doi.org/10.1557/s0883769400029961.

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“With a lighter but stiffer shaft and heavier clubhead the ball goes farther. Easier,” claims a 1975 advertisement for Shakespeare graphite irons. New materials such as graphite, boron, and titanium, have made sports equipment stronger yet lighter and thus more powerful. For athletes, sports have become, as the ad stated, easier. Serves over one hundred miles per hour are commonplace on the professional tennis tour, and athletes such as Tiger Woods are making par five golf holes obsolete. Sports organizations do not, however, always embrace these innovations that facilitate play. Major League Baseball retains its traditional mandate requiring only wood bats, the International Tennis Federation prohibited double strung tennis rackets, and the United States Golf Association banned asymmetrically dimpled golf balls. These technology regulations emerged to prevent the sport from becoming “easier,” protecting sport integrity.

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18

Lenihan, Donncha, William Ronan, Padraic E. O'Donoghue, and Sean B. Leen. "A review of the integrity of metallic vehicle armour to projectile attack." Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications 233, no. 1 (February 28, 2018): 73–94. http://dx.doi.org/10.1177/1464420718759704.

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This article presents a review of engineering and design aspects relevant to the mechanical and structural integrity of military vehicular armour, including materials-related technologies. Theoretical, experimental and numerical techniques for assessment are discussed and evaluated. A number of prominent material constitutive models are comparatively assessed. The Johnson–Cook model is shown to be particularly consistent in terms of agreement with experimental data, identification of material constants and ease of application. The article also discusses different numerical codes used and their relevance over time. Finally, it is argued that there is a need for a materials design tool for military vehicular armour.

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19

Yu, Jian Wu, Peng Xiao, Yu Shan Liao, and Min Cheng. "Surface Integrity in Electrical Discharge Machining of Ti-6Al-4V." Advanced Materials Research 76-78 (June 2009): 613–17. http://dx.doi.org/10.4028/www.scientific.net/amr.76-78.613.

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Titanium alloy is a kind of typical difficult-to-machine materials. In this study, the surface integrity of titanium alloy Ti-6Al-4V machined by electrical discharge machining (EDM) method are experimentally investigated and analyzed in term of surface roughness, SEM micrographs and microcracks. Effect of discharge energy and material properties on surface integrity are presented in this paper.

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20

Cole, Michele T., Louis B. Swartz, and Daniel J. Shelley. "Students’ Use of Technology in Learning Course Material." International Journal of Information and Communication Technology Education 10, no. 1 (January 2014): 35–48. http://dx.doi.org/10.4018/ijicte.2014010104.

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This paper presents the results of a four-year study examining business students’ perceptions of academic integrity and the role of technology in e-learning. This study is an extension of previous research on academic integrity in the online environment (Cole, Shelley & Swartz, 2013; Cole & Swartz, 2013; Shelley, Cole & Swartz, 2010). Of the 553 students who participated in the study, more than a third did not believe that academic integrity applied equally online and in the classroom. Independent-samples t-tests showed statistically significant differences based on gender, but not by age group or level of study. There were 200 responses to what made the two learning environments different. Students pointed to the “real world” where accessing all available resources to solve a problem was the norm, suggesting that instructors should recognize that and adapt their expectations of what is and is not acceptable behavior in the courses they teach.

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21

Lee, Young Shin, Hyun Seung Lee, and Sung Hwan Chung. "Integrity Evaluation and Dynamic Behavior of Radioactive Material Transport Cask under Drop Impact." Advanced Materials Research 275 (July 2011): 129–32. http://dx.doi.org/10.4028/www.scientific.net/amr.275.129.

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Radioactive waste is shipped in casks designed to prevent the release of the radioactive material into the environment in normal accidental conditions. So, the cask must maintain its integrity such as shielding characteristics and leak tightness after the 9m free drop. In this paper, we consider several types of radioactive material transport casks. The drop scenarios for the integrity evaluation are 6 drop cases. The dynamic analysis is performed by applying the various free drop angle of cask for research the dynamic impact behavior and integrity evaluation of a radioactive material transport cask. As a results of impact drop analysis on radioactive material transport cask, the container maintain structural integrity evaluation in 9 meter free drop conditions.

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22

PIDAPARTI, RAMANA M., MATHEW J. PALAKAL, and LONG FANG. "CELLULAR AUTOMATA APPROACH TO AIRCRAFT CORROSION GROWTH." International Journal on Artificial Intelligence Tools 14, no. 01n02 (February 2005): 361–69. http://dx.doi.org/10.1142/s0218213005002144.

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Corrosion is one of the degrading mechanisms that greatly affect the structural integrity of aerospace components. Corrosion begins with small imperfections in the given material referred to as "pits". Over time, and with exposure to the environment and loading stresses, these pits grow into structural cracks. These cracks, under further exposure to elements and stress, will eventually lead to material failure. To better understand how corrosion growth process takes place in materials, research is being conducted to simulate corrosion pit growth process using computational intelligence methods. The objective of this study is to develop a discrete dynamic model using cellular automata to simulate the pitting corrosion growth process in aircraft materials, and see how it affects the structural integrity.

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23

Ficker, Tomáš. "Effect of Metallic Inclusions on the Compressive Strength of Cement-Based Materials." Advances in Materials Science and Engineering 2018 (December 26, 2018): 1–10. http://dx.doi.org/10.1155/2018/1617280.

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In the concrete foundations, materials come into contact with bedrocks. The surfaces of bedrocks are often covered by sharp protrusions called asperities. Although geotechnical engineers have developed a reliable theory for assessing the mechanical stability of rocky terrains, the stability of transition zones between concrete and sharp asperities remains unsolved. Due to the large pressures that exist in these transition zones, the invasive influence of sharp asperities on the integrity of the concrete raises a question about possible changes of the mechanical properties of concrete materials used in foundations. These circumstances have inspired experiments in which metallic needles of various lengths have been embedded into cement-based materials to assess the influence of the needles on the compressive strength. This influence has been quantified, and the critical limits identifying the changes of material integrity have been determined. It has been conjectured that sharp rock asperities or needle-like rods of steel reinforcement in concrete may cause similar changes of material integrity as the metallic needles used in the experiments performed.

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24

Durham, Craig. "Technology Focus: Well Integrity (January 2021)." Journal of Petroleum Technology 73, no. 01 (January 1, 2021): 57. http://dx.doi.org/10.2118/0121-0057-jpt.

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Integrity (noun): the condition of having no part or element wanting; unbroken state; material wholeness, completeness, entirety. I don’t need to explain to readers of this journal why these definitions are important in relation to oil and gas wells. It is a life-of-well obligation that remains even after abandonment, and any responsible operator will have a dedicated well- integrity group advising asset managers with regard to these obligations. While reviewing the abstracts for this feature, I was struck by the huge range of issues and challenges to maintaining “material wholeness” beyond the routine testing of tree and safety valves. That made me wonder why more drilling, completion, and production engineers do not spend at least part of their early career development in a well-integrity team. A good way to learn how to design and operate a well that will last the test of time is to spend time evaluating the reasons why some wells do not. Anyone desiring to get a pretty good awareness of geology and geomechanics, casing and tubing design, drilling fluid and cementing practices, oilfield equipment material specification, design and testing, with some production engineering fluid temperature and pressure modeling thrown in, could do a lot worse than spend a year or two in a well-integrity department. It might not seem the most cutting-edge role in the company, and many older wells have integrity issues that seem almost intractable, so it is perhaps natural that we are more interested in the shiny and new. But, if you have read this far, I would encourage you to read some of these papers and see how these authors have approached the issues as challenges to be faced, not shied away from. And, because it’s that time of year for personal development planning and goal setting, why not work to attend once of the many well-integrity conferences, seminars, or talks organized by SPE each year? Better yet, for your own career material wholeness, why not consider a secondment to your well-integrity department?

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25

Noble, R. "INTEGRITY OF BOLTED JOINTS: HYDROCARBON LEAK REDUCTION BY JOINT-INTEGRITY MANAGEMENT." APPEA Journal 46, no. 1 (2006): 603. http://dx.doi.org/10.1071/aj05041.

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Bolted joints are very common in petroleum production facilities. Whereas extensive controls are applied to the production of a welded joint—in terms of material control and specification, control and competence of the welder, and verification of the integrity of the weld—this is not the case for bolted joints. The consequences of failure of a welded joint and a bolted joint, however, are similar and potentially catastrophic if the contents of the pipeline or vessel are hydrocarbons under pressure. This paper discusses the main issues in producing and maintaining a leak-free bolted joint and makes the case for establishing industry-wide standards for the management of bolted joints that are equally as stringent as those applied to welded joints.Implementing such a system, whilst improving and assuring the safety and environmental performance of an asset, will also reduce costs due to rework, product loss, schedule slippage and production downtime.

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26

TAMAKI, Yoshitaka, Tatsuya IWAMA, and Takahide SAKAGAMI. "P014 Integrity evaluation of coating material based on THz-TDS." Proceedings of Conference of Kansai Branch 2015.90 (2015): 432. http://dx.doi.org/10.1299/jsmekansai.2015.90.432.

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27

Kuschel, Sven, Jens Sölter, and Ekkard Brinksmeier. "Analysing Internal Material Loads in Manufacturing Processes." Advanced Materials Research 1018 (September 2014): 83–90. http://dx.doi.org/10.4028/www.scientific.net/amr.1018.83.

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In order to generate desired functional properties in the surface layer of machined parts, today several iterative attempts are needed to achieve the specified surface and subsurface properties. Despite progress in simulation and modelling, which is limited to individual processes and investigations, a predictive adjustment of a manufacturing process in terms of a specific state of surface integrity is not possible. In this work, an alternative view regarding manufacturing processes, based on occurring internal physical mechanisms, is presented. It is shown for several processes, that the surface integrity due to material modifications can be correlated with internal material loads occurring during the process. To utilise this method in practical applications, approaches are presented which should enable a reduction in the complexity of the mathematical description of the internal material loading states.

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28

Ahmad, Samir, and Izhar-ul-Haq. "Wind Blade Material Optimization." Applied Mechanics and Materials 66-68 (July 2011): 1199–206. http://dx.doi.org/10.4028/www.scientific.net/amm.66-68.1199.

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Анотація:

In recent years the wind turbine blade has been the subject of comprehensive study and research amongst all other components of the wind turbine. As our appetite for renewable energy from the wind turbine continues to increase, companies now focus on rotor blades which can go up to 80m in length. The blade material not only have to face large aerodynamic, inertial and fatigue loads but are now being designed to endure environmental effects such as Ultraviolet degradation of surface, accumulation of dust particles at sandy locations, ice accretion on blades in cold countries, insect collision on blades and moisture ingress. All this is considered to ensure that the blades complete its designated life span. Furthermore exponential increase in composite blade manufacturing is causing a substantial amount of unrecyclable material. All these issues raise challenges for wind blade material use, its capacity to solve above mentioned problems and also maintain its structural integrity. This paper takes on this challenge by optimizing from the properties, merits, demerits and cost of different possible competing materials. Then the material is checked for its structural integrity through Finite Element Analysis simulation using standards like IEC-61400-1.This paper also shows the future direction of research by elaborating the influence nanotechnology can have in the improvement of the wind blade.

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29

Bolay, Matthieu. "Fabricating the Integrity of Gold in Refineries." TSANTSA – Journal of the Swiss Anthropological Association 26 (June 30, 2021): 85–104. http://dx.doi.org/10.36950/tsantsa.2021.26.7124.

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Gold refineries are under pressure to revise their understanding of “integrity” beyond the physical cohesion of gold products, in order to integrate supply chain due diligence on human rights, labour conditions, and conflict financing as part of what can be coined the ethical integrity of gold. This article interrogates how processes of erasure, through material purification in the refining process, and disclosure, through certification against “responsible” standards, are reconciled within one expanded notion of integrity. By paying specific attention to processes of digitizing gold in this endeavour, it argues that, while limited in its role as a transparency device, digitization fosters new uses of gold, making it more liquid, more rapidly tradable, and potentially more speculative. These digital fetishes open new fields of value, not out of the gold itself but out of its traces, in which, paradoxically, artisanal ground producers selling physical gold remain poorly included so far.

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30

Li, Qi, and Xiaodong Yang. "Influence of tool electrode material on material removal and surface integrity in electrical discharge machining." Procedia CIRP 95 (2020): 383–88. http://dx.doi.org/10.1016/j.procir.2020.01.195.

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31

Campos, P. E. G. A., M. O. Barceleiro, H. R. Sampaio-Filho, and L. R. M. Martins. "Evaluation of the Cervical Integrity During Occlusal Loading of Class II Restorations." Operative Dentistry 33, no. 1 (January 1, 2008): 59–64. http://dx.doi.org/10.2341/07-35.

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Clinical Relevance The periodical supervision of packable composite proximal restorations is necessary and essential, as microleakage greatly increases after axial mechanical load incidences, even when this material is associated with other materials, such as flowable composite, glass-ionomer or compomer.

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32

Guan, Yan, and Zhe Chen. "Material Selection and Management Based on Cybernetics." Applied Mechanics and Materials 599-601 (August 2014): 2116–19. http://dx.doi.org/10.4028/www.scientific.net/amm.599-601.2116.

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Анотація:

In Cybernetics proposed by Liu Guanzhong, it stresses to analyze and study problems from aspect of reason and provides new perspective and theoretical guidance for design. Materials are medium to express and realize products and it can improve accuracy, adaptability and integrity of material selection under Cybernetics theory. This thesis presents the concept and theoretical characters of Cybernetics and mainly stresses selection principal and management method for product materials on the basis of it.

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33

Bo, Hong Guang, Xin Zhang, and Zhi Xiang Li. "Study on Mapping Techniques of Bill of Material Supporting Complex Assembly Line Material Feeding." Applied Mechanics and Materials 687-691 (November 2014): 5012–17. http://dx.doi.org/10.4028/www.scientific.net/amm.687-691.5012.

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Анотація:

In complex assembly process, By using the conversion mapping relation of “MBOM-WBOM-FBOM”, consistency mapping and integrity control of material feeding information for complex assembling line was realized, and data describing model that can reflect the feature of assembly process was provided for delicacy management. At last, the rationality of BOM models above and feasibility of transfer approach were proved through actual case.

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34

Bembeeva, Lyubov’ A. "Анализ распределения антропологических материалов (костей посткраниального скелета) по курганным группам". Бюллетень Калмыцкого научного центра Российской академии наук 15, № 3 (25 листопада 2020): 10–26. http://dx.doi.org/10.22162/2587-6503-2020-3-15-10-26.

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Анотація:

The article deals with the results of the distribution of the anthro¬pological materials, namely bones of postcranial skeleton. Due to the great amount of material, the cranial part of the collection will be analyzed separate¬ly. In the process of cataloging of the bone material kept at the depository of the Kalmyk Scientific Center of the RAS, there is the need for paying a special attention to the distribution of the existing anthropological materials into dif¬ferent mound groups, which were located in different landscape-geographical zones of the Republic of Kalmykia. The special attention was given to the rep¬resentation of the anthropological unit (which exactly skeleton bones) and also the integrity of the bone tissue. This criterion is important for the evaluation of the influence of soil characteristics on the integrity of the mineral and organic parts of the bones. The cultural-chronological belonging of the anthropologi¬cal material in question is given in a general way on the basis of field studies reports.

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35

Bembeeva, Lyubov’ A. "Анализ распределения антропологических материалов (костей посткраниального скелета) по курганным группам". Бюллетень Калмыцкого научного центра Российской академии наук 15, № 3 (25 листопада 2020): 10–25. http://dx.doi.org/10.22162/2587-6503-2020-3-15-10-25.

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Анотація:

The article deals with the results of the distribution of the anthropological materials, namely bones of postcranial skeleton. Due to the great amount of material, the cranial part of the collection will be analyzed separately. In the process of cataloging of the bone material kept at the depository of the Kalmyk Scientific Center of the RAS, there is the need for paying a special attention to the distribution of the existing anthropological materials into different mound groups, which were located in different landscape-geographical zones of the Republic of Kalmykia. The special attention was given to the representation of the anthropological unit (which exactly skeleton bones) and also the integrity of the bone tissue. This criterion is important for the evaluation of the influence of soil characteristics on the integrity of the mineral and organic parts of the bones. The cultural-chronological belonging of the anthropological material in question is given in a general way on the basis of field studies reports.

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36

Vasco, D. W., Thomas M. Daley, Verónica Rodríguez Tribaldos, Pierpaolo Marchesini, G. M. Hoversten, Gwyn Mali, Dimitri Bevc, and Valeri Korneev. "Seismic monitoring of well integrity." Leading Edge 41, no. 2 (February 2022): 134–39. http://dx.doi.org/10.1190/tle41020134.1.

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Анотація:

Seismic tube waves, produced by flexure of the well boundary, pressure changes in the fluid in the well, and deformation of the material immediately surrounding the well, are particularly sensitive to variations in the state of the well. We evaluate a direct approach for generating and observing tube waves as a means of detecting well damage. While we find that it can be difficult to reliably excite observable tube waves without a very strong surface source, time-frequency techniques can be employed to increase the detectability of tube wave reflections. New technologies, particularly distributed acoustic sensing, hold great promise for evaluating well integrity by monitoring tube waves, temperature changes, and seismic noise due to well deformation and fluid leakage.

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37

Hashish, Mohamed. "Characteristics of Surfaces Machined With Abrasive-Waterjets." Journal of Engineering Materials and Technology 113, no. 3 (July 1, 1991): 354–62. http://dx.doi.org/10.1115/1.2903418.

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Анотація:

The general characteristics of surfaces machined with abrasive-waterjets (AWJs) are discussed in terms of surface texture and surface integrity. Data are presented from several studies involving different machining operations, including cutting, milling, turning, and drilling, and various advanced materials. The effects of AWJ parameters on surface texture effects, such as waviness, kerf taper, and burr height, in thin sheet metals typically used in the aerospace industry are presented and discussed. Other surface texture parameters, including surface finish and lay, are also addressed for selected machining applications such as milling and turning. Abrasive particle size is found to be the dominant parameter affecting the surface finish. The surface integrity effects are defined as particle deposition, delamination, gouging, microstructural changes, cracking, chipping, work hardening, and heataffected zones. Particle deposition occurs in the machining of ductile materials, but deposited particles can easily be removed by cleaning. Minor work hardening may result but can be totally eliminated if the dominant material removal mechanism is the cutting wear mode, which prevails under certain jet and traverse conditions. Thus, although the machining of advanced materials with AWJs may result in minor but controllable surface texture effects, it does not generally affect the integrity of the material.

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38

Herlina. "Muatan Konten Lokal pada Materi Pelajaran Bahasa Inggris di SMP Negeri 5 Sigi." Paedagogia: Jurnal Pendidikan 7, no. 1 (December 31, 2019): 125–40. http://dx.doi.org/10.24239/pdg.vol7.iss1.35.

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Анотація:

Based on the 2013 curriculum 2016’s revision, there are subject materials that demand about local content in English subjects at the level of SMP Class VII. Teachers need many researches and practices integrating and implementating these subjects. Basically, it needs to be done in-depth study in the form of content analysis. This research was conducted on content and learning English in SMP Negeri 5 Sigi. This study aims to find out 1) how many percentage of local content in English lesson material Class VII SMP in the curriculum 2013 revision 2016; 2) how to integrate local content in English subject matter in SMP Negeri 5 Sigi; 3) how the implementation of material with local content in English learning in SMP Negeri 5 Sigi, and; 4) how to integrate local content in effective and efficient English lessons in SMP Negeri 5 Sigi. The study used a qualitative descriptive approach with the method of collecting document studies, interviews, and observation. The research results are 1) the proportion of local content that can be integrated into English language learning material SMP is 95%; 2) the integrity of local content in English learning materials in SMP Negeri 5 Sigi can be found in the lesson plan; 3) implementation of materials with local content in English learning attached to KTSP, Syllabus, lesson plan and learning resources enrichment book.

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39

Gao, Yuan, Xin Huang, Ming Jie Lin, Zheng Guo Wang, and Rong Lei Sun. "Analysis and Prediction of Surface Integrity in Machining: A Review." Applied Mechanics and Materials 487 (January 2014): 165–72. http://dx.doi.org/10.4028/www.scientific.net/amm.487.165.

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Анотація:

Surface integrity is widely used for evaluating the quality of machined components. It has a set of various parameters which can be grouped as: (a) topography parameters (b) mechanical parameters and (c) metallurgical state. Many factors affect surface integrity including cutting parameters, tool geometry, material properties and vibrations. We can make prediction and optimization for surface integrity by taking advantages of these factors. This paper reviews previous studies and offers a comprehensive summary of surface integrity in the following order: introduction of surface integrity, main parameters of surface integrity, factors affecting surface integrity, prediction and optimization for surface integrity.

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40

Condruz, Mihaela Raluca, Cristian Puscasu, Lucia Raluca Voicu, Ionut Sebastian Vintila, Alexandru Paraschiv, and Dragos Alexandru Mirea. "Fiber Reinforced Composite Materials for Proton Radiation Shielding." Materiale Plastice 55, no. 1 (March 30, 2018): 5–8. http://dx.doi.org/10.37358/mp.18.1.4952.

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Nowadays scientific researchers aim to develop new material designs for space structures that can withstand the harsh conditions in space environment. Another goal is to reduce the weight and the launching cost of the structures. A solution to those needs is to integrate fiber reinforced polymers in spacecraft structural components. Radiation shielding is a requirement that has to be met by the materials used to manufacture space structures. Protons are one of the many charged particles that can influence the integrity of materials in space. In the present study three material designs were developed and their ability to shield proton beam irradiation was evaluated. The material designs consist in advanced composite materials (carbon fiber reinforced polymers - CFRPs) that integrate the concept Low Z - High Z - Low Z (tantalum foil) and metallic coatings. Simulations were performed to determine the penetration depth of an ion beam (energy 15 MeV) in the proposed material designs. It was observed that the beam�s penetration depth through a CFRP sample with Ta foil (sample�s thickness 2.08 mm) was about 75% of the sample�s thickness, 58% for CFRP sample with Babbitt coating (sample�s thickness 2.28 mm), 56% for the CFRP sample with Zn coating (sample�s thickness 2.28 mm) and 55% for the CFRP sample with Zn/Monel coating (sample�s thickness 2.28 mm). It seems that the proposed material designs provide ion beam protection similar with an aluminum sample of 2 mm thickness. The experimental procedure confirmed the results obtained from the simulations, all the material designs providing protection in case of proton beam irradiation with an energy of 15.8 MeV.

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41

Schenke, F., K.-A. Hiller, G. Schmalz, and M. Federlin. "Marginal Integrity of Partial Ceramic Crowns Within Dentin With Different Luting Techniques and Materials." Operative Dentistry 33, no. 5 (January 1, 2008): 516–25. http://dx.doi.org/10.2341/07-131.

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Анотація:

Clinical Relevance Resin coating improves the marginal seal of partial ceramic crowns to dentin compared to conventional luting, especially at the dentin/composite interface. However, the self-adhesive material RelyX Unicem shows significantly better marginal integrity than the other materials tested.

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42

Zarudi, I., and L. C. Zhang. "209 Material Property Effect on the Surface Integrity of Ground Components." Proceedings of International Conference on Leading Edge Manufacturing in 21st century : LEM21 2003 (2003): 247–52. http://dx.doi.org/10.1299/jsmelem.2003.247.

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43

Conradie, Marius C., Jaime Landman, Manoj Monga, Jamil Rehman, and Ralph V. Clayman. "Effect of Argon-Beam Coagulation on the Integrity of Suture Material." Journal of Endourology 16, no. 3 (April 2002): 191–94. http://dx.doi.org/10.1089/089277902753716188.

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44

Fraser, A. C., M. Cusack, S. E. Solomon, and M. M. Bain. "Material properties, ultrastructural integrity and protein chemistry of broiler breeder eggshells." British Poultry Science 40, sup001 (December 1999): 24–26. http://dx.doi.org/10.1080/00071669986648.

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45

Yu, Lang, Yanming Quan, Peijie Liu, and Junjie Wan. "Influence of Turning Parameters on Surface Integrity of D840 Wheel Material." Journal of Physics: Conference Series 1213 (June 2019): 052112. http://dx.doi.org/10.1088/1742-6596/1213/5/052112.

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46

Koňár, R., M. Mičian, and P. Fabian. "Inspection possibilities of metallic material surface integrity by conventional ultrasonic technique." Koroze a ochrana materialu 61, no. 3 (July 26, 2017): 95–99. http://dx.doi.org/10.1515/kom-2017-0011.

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Анотація:

Abstract The article is focused on the possibilities of ultrasound surfaces control on metallic materials by conventional ultrasonic techniques. Physical principles, types of ultrasonic waves to be used for surface control are described in the theoretical part. Three surface control techniques are listed in the experimental part of article. The first technique is a common control by angle ultrasonic probe with using transverse waves. The second technique is surface control by 30-70-70 creep waves and third techniques is surface testing by Rayleigh waves. Practical examples of ultrasonic testing for all techniques are illustrated. The conclusion of the article is devoted to the advantages and limitations of the individual testing methods.

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47

Wallin, Kim R. W. "Simple distribution-free statistical assessment of structural integrity material property data." Engineering Fracture Mechanics 78, no. 9 (June 2011): 2070–81. http://dx.doi.org/10.1016/j.engfracmech.2011.04.002.

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48

Genedy, Moneeb, Usama F. Kandil, Edward N. Matteo, John Stormont, and Mahmoud M. Reda Taha. "A new polymer nanocomposite repair material for restoring wellbore seal integrity." International Journal of Greenhouse Gas Control 58 (March 2017): 290–98. http://dx.doi.org/10.1016/j.ijggc.2016.10.006.

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49

Corcoran, Joseph, and Peter B. Nagy. "Passive thermoelectric power monitoring for material characterisation." Structural Health Monitoring 18, no. 5-6 (November 29, 2018): 1915–27. http://dx.doi.org/10.1177/1475921718814707.

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Анотація:

Monitoring deterioration of material properties is important for assessing the structural integrity of engineering components, as it may indicate susceptibility to damage. This article focusses on the example of thermoelectric power measurements, which are known to be indicative of thermal and irradiation embrittlement and may therefore act as a proxy metric for material integrity. A passive thermoelectric power–monitoring technique is proposed which is suitable for permanent installation on engineering components. In passive measurements, the active perturbation (in this case, the heating required to create a temperature gradient) is replaced by incidental perturbation from the environment. The reduction in the ‘signal’ amplitude associated with relying on incidental perturbations may be compensated by increasing the number of individual measurements, facilitated by the greatly reduced power demand of the passive modality. Experimental studies using a stainless steel tube as a test component demonstrate thermoelectric power accuracy of <0.03 μV/°C is achievable with temperature gradients of the order of 2°C; in many cases of practical importance, this is sufficient to track the anticipated changes in thermoelectric power associated with thermal degradation.

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50

Wu, Guohui, Shelli L. Frey, Stacey A. Maskarinec, and Ka Yee C. Lee. "Triblock Copolymer as an Effective Membrane-Sealing Material." MRS Bulletin 31, no. 7 (July 2006): 532–35. http://dx.doi.org/10.1557/mrs2006.138.

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Анотація:

An intact cell membrane serves as a permeable barrier, regulating the influx and efflux of ions and small molecules. When the integrity of the membrane is compromised, its barrier function is also disrupted, threatening the survival of the cell. Triblock copolymer surfactants of the form poly(ethylene oxide)-poly(propylene oxide)-poly(ethylene oxide) have been shown to help seal structurally damaged membranes, arresting the leakage of intracellular materials.In order to understand how this particular family of triblock copolymers helps seal damaged membranes, model lipid monolayer and bilayer systems have been used to unravel the nature of the lipid/copolymer interaction. The copolymer surfactant is found to selectively insert into structurally compromised membranes, thus localizing its sealing effect on the damaged regions. The inserted polymer is “squeezed out” when the lipid packing density is increased, suggesting a mechanism for the cell to be rid of the polymer when the membrane integrity is restored.

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