Gotowe bibliografie tematyczne / Motor print

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Gotowa bibliografia na temat „Motor print”

Autor: Grafiati

Data publikacji: 29 lipca 2024

Data aktualizacji: 31 lipca 2024

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Artykuły w czasopismach na temat "Motor print"

Kenzhebalin, Daulet, Baekdu Choi, Sige Hu, Yin Wang, Davi He, Zillion Lin, George Chiu i Jan Allebach. "Developing an inkjet printer IV: printer mechanism control for best print quality". Electronic Imaging 2020, nr 15 (26.01.2020): 349–1. http://dx.doi.org/10.2352/issn.2470-1173.2020.15.color-279.

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Inkjet printer motor control consists of moving the printhead in the scan direction and in the process direction. Both movements have different objectives. Scan direction movement needs to have constant velocity and process direction movement needs to have accurate movement. In this paper, we discuss a method for controlling the velocity of the printhead and how to tune the motor control parameters. We also design six test pages for testing accuracy of the printhead movement and cartridge properties. For each test page, we discuss expected prints, common printer control problems that could alter the print quality, and how to identify them.

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Arnold, Eles, Calin Neamtu, Cornel Ciupan i Anton Popa. "Designing a Hybryd Equipment for Additive Manufacturing". Applied Mechanics and Materials 808 (listopad 2015): 213–18. http://dx.doi.org/10.4028/www.scientific.net/amm.808.213.

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In terms of the development of 3D printers we can say that in the first stage of evolution the huge majority of them were able to print 3D using 3 axis numerically controlled. Currently there are several types of printers that can print in 4 and 5-axis developed using classical solutions (portal or parallel structure). Another direction of development is the combination of 3D printers and traditional manufacturing equipment, with an already existing commercial solution (Hermle MPA 40) that combines milling and MPA technology (Metal Powder-Application). This paper presents a hybrid equipment that can be placed in the specific additive manufacturing category, combining milling operations (4 axis) and turning with 3D printing using FDM technology. The machine uses stepper motors for driving kinematic axes, a DC motor (16 000 rev / min) to drive the main shaft of the mill and a three-phase motor for turning. The software used for milling and turning is Mach3, while MatterControl is used for 3D printing.

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Rahman, M. Adi, Hamsir Hamsir i Lukman Lukman. "MENINGKATKAN KEAMANAN KENDARAAN BERMOTOR DENGAN MEMBUAT ALAT FINGER PRINT". INFO-TEKNIK 20, nr 1 (20.06.2020): 121. http://dx.doi.org/10.20527/infotek.v20i1.6966.

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One of the problems faced by motor vehicle users is the frequent theft and loss of motorbikes. The purpose of the study was to design a finger with the aim of increasing the safety of motorvehicles. The method use in the research is the research method used with the case study approach method which is the innovation of making motorcycle vehicle safety devices that will function as a log out so that motorized vehicles cannot run if they do not use the ignition key of the motor vehicle owner. The expect results of this study are the availability of motor vehicles safety devices so that the potential loss of motorvehicles can be reduce. The results of this study are expect to be useful for the benefit of many people and can be develoveas industrial innovation

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Ekayanti Tarigan i Servista Bukit. "Meningkatkan Kemampuan Motorik Kasar Anak Usia 5-6 Tahun Melalui Foot Print Game di TK Negeri Pembina Pancur Batu T.A 2021/2022". DIAJAR: Jurnal Pendidikan dan Pembelajaran 1, nr 2 (26.04.2022): 152–58. http://dx.doi.org/10.54259/diajar.v1i2.676.

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The purpose of this classroom action research is to improve the gross motor skills of children aged 5-6 years in Pembina State Kindergarten, Kec. Pancur Batu through foot print game. Foot print game activities are very beneficial for children's gross motor development. This classroom action research procedure uses the Kemmis and McTaggart model through four stages: planning, action and observation, reflection. Collecting data using interviews, observation, and documentation. This research was carried out in two cycles and each cycle was an improvement based on the results of reflections from the previous cycle. The results of this study indicate that the foot print game can improve the gross motor skills of group B children aged 5-6 years in Pembina State Kindergarten, Kec. Pancur Batu with a classical percentage in the initial cycle of 49.69% in the Poor category, the first cycle obtained a classical percentage of 60.31% in the Moderately Able category and in the second cycle the classical percentage was obtained by 73.43% in the Able category.

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Yulia Pratiwi, Putri, i Indra Yeni. "Efektivitas Stencil Print dalam Mengembangkan Kemampuan Motorik Halus Anak Usia 5-6 Tahun di Taman Kanak-kanak Mekar Bunga Padang". Ar-Raihanah: Jurnal Pendidikan Islam Anak Usia Dini 3, nr 2 (14.08.2023): 211–17. http://dx.doi.org/10.53398/arraihanah.v3i2.372.

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This research was conducted with the aim of finding out how effective the use of stencil print media is in developing children's fine motor skills at Mekar Bunga Kindergarten, Padang. This type of research is a quantitative research with quasi-experimental methods. Data collection techniques in the form of tests, observations, and documentation. The population in this study were all students of Mekar Bunga Kindergarten, Padang, totaling 43 children. While the sample consisted of 20 children, 10 children in class B1 and 10 children in class B2. Data analysis used is hypothesis testing, T test, and effect size test. The results of the study showed that there was an effectiveness of using stencil print media on the development of children's fine motor skills with an initial score (pre-test) of 21.80 and a final score (post-test) of 26.80. Then from the calculation of the hypothesis test shows a significant level of 0.001. The results of the study using the effect size test obtained a value of 1.60 which is included in the strong category. Thus stencil print media with plastic cup media is effective in developing children's fine motor skills at Mekar Bunga Padang Kindergarten.

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Syafitri Utari, Desy, i Nurul Khotimah. "Pengaruh Media Stencil Print Dengan Bahan Alam Terhadap Kemampuan Motorik Halus Pada Kelompok B TK Tunas Bangsa Jombang". Ar-Raihanah: Jurnal Pendidikan Islam Anak Usia Dini 2, nr 2 (30.12.2022): 73–87. http://dx.doi.org/10.53398/jr.v2i2.205.

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Fine motor skills are very important to develop for early childhood. This study aims to determine whether there is an effect of stencil print media with natural materials on the fine motor skills of children in group B TK Tunas Bangsa Jombang. Learning to develop children's fine motor skills needs to pay attention to the learning media used. The reason for using stencil print media with natural materials is because the teachers rarely use natural materials around the school environment to stimulate children's fine motor skills. This study used a quantitative approach with a pre-experimental one group pretest-posttest design, with a sample of 14 children in group B TK Tunas Bangsa Jombang. The data collection tool is a non-test instrument. The results showed that the Asymp (2-tailed) value was 0.001 <0.05 which indicated that there were differences in pretest and posttest scores obtained by children or it could be said that stencil printing activities using natural materials could significantly influence the fine motor skills of group B children in Kindergarten Tunas Bangsa Jombang

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Adelmann, Benedikt, i Ralf Hellmann. "Function Integration in Additive Manufacturing: Design and Realization of an LPBF Built Compressed Air Motor". Materials 15, nr 19 (24.09.2022): 6632. http://dx.doi.org/10.3390/ma15196632.

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We present a compressed air motor, completely built by laser powder bed fusion. To highlight the fully functional integration by additive manufacturing, the rotor, stator, bearings, turbine, gas inlet and outlet were all built in a single print job. The material used was Inconel 718, and the motor was 44 mm tall and 12 mm in diameter. With the rotation axis of the motor in print in the direction of the laser powder bed fusion process, no build supports are needed, and thus the rotor and stator are fully moveable against each other. Plain bearings were used to position the rotor inseparably inside the stator, with a bearing gap of 0.2 mm, resulting in stable rotation. The idle rotation speed of the motor was measured with a digital laser measuring device as a function of air pressure and inlet size. With linear behavior between the rotation speed and gas pressure of up to 5.5 bar, the motor can be easily controlled. With varying gas inlet sizes, the idle rotation speed of the compressed air motor is also varied. A maximum rotation speed of 90,000 rpm was achieved at 1.5 mm gas inlet size and 3 bar gas pressure.

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Panage, Prof Rohan M., Prof Kaustubh D. Agashe, Ms Pragati H. Sakore, Mr Atharv S. Kulkarni i Mr Atharva S. Bele. "Design and Development of Delta 3D Printer". International Journal for Research in Applied Science and Engineering Technology 11, nr 5 (31.05.2023): 1451–58. http://dx.doi.org/10.22214/ijraset.2023.51674.

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Abstract: The Delta 3D printer project, design and development is focused on creating a 3D printer that can produce high quality prints quickly and accurately. We use a delta printer that uses three vertical arms to move the printhead. The printer is designed to use external components such as motor drivers, display lines and control boards. T he printer's firmware is also optimized for its performance and we use open-source software to interact with the printer. The printer was tested using PLA media and related settings, and the results showed that the printer was able to produce high quality prints with a fast print time. The Delta 3D Printer project was designed and created to further research to improve performance and functionality of 3D printers.

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Idris Shuhada i Desmira Desmira. "KECEPATAN PROSES CETAK MOTOR DC MESIN OUTDOOR TERHADAP KEPUASAN KONSUMEN PADA PT. SEMBURAT LENTERA SEMESTA". Jurnal Universal Technic 1, nr 2 (7.09.2022): 01–13. http://dx.doi.org/10.58192/unitech.v1i2.42.

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Outdoor Digital Printing Machine is a printing machine or digital printing machine whose printouts are intended for outdoors and are weather-resistant, both hot, sunlight and rain. Outdoor machines use a special type of ink, namely solvent ink. The principle of the outdoor machine itself is to print the design results that were previously in the computer. To drive an outdoor machine requires expertise and understanding in its use and there is a mode of acceleration of the printing process on an outdoor machine whose acceleration of the printing process is not yet known, where the acceleration of the printing process can affect consumer satisfaction. This study aims to 1) Knowing about Digital Print Tools as well as. 2) Knowing the use of Outdoor Digital Printing Machines. 3) Knowing the print speed of the outdoor machine. 4) Knowing the percentage of customer satisfaction. The research method used is the R&D method. By using the R&D method, the results obtained to determine the speed of the outdoor engine on the printhead motor with LOW mode have a speed of 124 m/s, MIDELL mode has a speed of 161 m/s, while HIIGH mode has a speed of 241 m/s. s. The results obtained to determine consumer satisfaction with the speed of the print rate through the time of using the machine using the Guttman scale, namely the overall process time of the outdoor digital printing printing machine on customer satisfaction has a conformity, which is indicated by the percentage of answers "Yes" an average of 75%.

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Rozprawy doktorskie na temat "Motor print"

"Texas Motor Speedway: Print Advertising, Sponsorship, Logos, and Congruence". Texas Christian University, 2007. http://etd.tcu.edu/etdfiles/available/etd-04262007-094414/.

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(10225127), Daulet O. Kenzhebalin. "DETECTION AND HEALING OF STREAKS CAUSED BY DUST IN SHEETFED SCANNERS; MOTOR CONTROL, MODEL BASED HALFTONING, AND PRINT MASK DESIGN USING DIRECT BINARY SEARCH FOR INKJET PRINTERS". Thesis, 2021.

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In this thesis, I present three research topics in the areas of scanning and printing.

The first topic is on detecting and removing specific artifacts in images scanned using

sheetfed scanners. Sheetfed scanners are widely used for scanning stacks of loose pages at

high speed. The scanhead in the sheet-fed scanners is stationary and the pages are fed with

an automatic document feeder. When dust particles get stuck onto the scanner glass, they

reflect the incident light and cause vertical streaks in the scanned images. These artifacts are

known as dust streaks. I have developed a method for detecting and healing dust streaks.

The second topic is on motor control system and test page design for inkjet printers.

Motor control consists of two main parts which are movement of the printhead in the scan

direction and the process direction. Scan direction movement needs to have a constant

smooth velocity in order to avoid banding artifacts. Process direction movement needs to

advance an exact distance in order to avoid misalignment. The full procedure for implementing

the motor control on a microcontroller, determining optimal parameters, and designing

test pages for validating the motor control system is presented.

The third topic is on printer model based halftoning and print mask design using DBS.

Inkjet printers can fire nozzles at specific pixel locations. Due to nozzle clogging and nonuniformity

in the nozzles, inkjet printers usually print in the multipass mode to reduce print

artifacts. In this mode, the printhead goes over the same line more than once with different

sets of nozzles of the same ink. Print mask determines which pixels are printed at a certain

pass and which pixels are not printed. I developed a printer model to predict prints and

also developed test pages to obtain parameters for the printer model. Then, we looked into

model based halftoning and print mask design using the direct binary search algorithm. In

addition, I investigated the advantages and disadvantages of using light magenta as opposed

to using black ink in 4-color printing.

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Авагян, Арутюн Вардгесович. "Bionic prothesis control system". Thesis, 2020. https://er.nau.edu.ua/handle/NAU/45216.

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Робота публікується згідно наказу ректора від 29.12.2020 р. №580/од "Про розміщення кваліфікаційних робіт вищої освіти в репозиторії НАУ"
Prosthetics is a recovery of the got out of shape and functions of separate bodies or parts of a body. Prosthetic engineering is engaged in development and production of artificial technical means of recovery. The disabled people who transferred such amputation lose first of all an opportunity to self-service, and in most cases also lose a profession. Therefore purpose of prosthetics of upper extremities: return of the disabled person to a possibility of self-service and to work. As artificially it is difficult to reproduce all functionality of a healthy human hand at the present stage of technical development, the main objective of prosthetic engineering is a creation of an engineering device capable as much as possible to fill the lost functions, that is to return to the disabled person an opportunity to make the main household movements. Such movements are: gripper and manipulation of a subject.

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Książki na temat "Motor print"

Hanson, Joanne. Lip prints: Home program for oral-motor skills. Austin, Tex. (8700 Shoal Creek Blvd., Austin 78757-6897): Pro-Ed, 2004.

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Wells, Carolyn. Patty's Motor Car: Large Print. Independently Published, 2020.

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Wells, Carolyn. Patty's Motor Car: Large Print. Independently Published, 2020.

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Wells, Carolyn. Patty's Motor Car: Large Print. Independently Published, 2021.

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Wells, Carolyn. Patty's Motor Car: Large Print. Independently Published, 2020.

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Wells, Carolyn. Patty's Motor Car: Large Print. Independently Published, 2020.

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Wharton, Edith. Motor-Flight Through France: Large Print. Independently Published, 2020.

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Williamson, Alice Muriel Livingston. The Motor Maid (Large Print Edition). BiblioBazaar, 2007.

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Penrose, Margaret. The Motor Girls (Large Print Edition). BiblioBazaar, 2006.

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Warton, Edith. Motor-Flight Through France: Large Print. Independently Published, 2020.

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Części książek na temat "Motor print"

Heintzman, Savannah, S. Hélène Deacon i Nicole J. Conrad. "The Role of Children's Learning about Print in the Development of Reading and Spelling Skills". W Routledge International Handbook of Visual-motor skills, Handwriting, and Spelling, 194–206. London: Routledge, 2023. http://dx.doi.org/10.4324/9781003284048-18.

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Schmidt, Jacob, i Carlo Montemagno. "Molecular Motor-Powered Nanodevices". W Dekker Encyclopedia of Nanoscience and Nanotechnology, Second Edition - Six Volume Set (Print Version). CRC Press, 2004. http://dx.doi.org/10.1201/9781439834398.ch165.

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Montemagno, Carlo, i Jacob Schmidt. "Molecular Motor-Powered Nanodevices". W Dekker Encyclopedia of Nanoscience and Nanotechnology, Second Edition - Six Volume Set (Print Version), 2347–56. CRC Press, 2008. http://dx.doi.org/10.1201/noe0849396397.ch202.

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Bruce Lung, Robert, Mitchell Olszewski i Aimee McKane. "Industrial Motor System Optimization Projects in the U.S." W Encyclopedia of Energy Engineering and Technology - 3 Volume Set (Print Version), 883–89. CRC Press, 2007. http://dx.doi.org/10.1201/9780849338960.ch104.

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Vogel, Viola, Henry Hess i George Bachand. "Motor Proteins in Synthetic Materials and Devices". W Dekker Encyclopedia of Nanoscience and Nanotechnology, Second Edition - Six Volume Set (Print Version). CRC Press, 2004. http://dx.doi.org/10.1201/9781439834398.ch157.

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Hess, Henry, Viola Vogel i George Bachand. "Motor Proteins in Synthetic Materials and Devices". W Dekker Encyclopedia of Nanoscience and Nanotechnology, Second Edition - Six Volume Set (Print Version), 2484–92. CRC Press, 2008. http://dx.doi.org/10.1201/noe0849396397.ch214.

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Potter, Jane. "I Alone am Left to Tell the Tale Memoirs by Women on Active Service". W Boys in Khaki, Girls in Print, 150–224. Oxford University PressOxford, 2005. http://dx.doi.org/10.1093/oso/9780199279869.003.0005.

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Abstract It is quite impossible to keep pace with all the new incarnations of women in war-time—’bus-conductress, ticket-collector, lift- girl, club waitress, post-woman, bank clerk, motor-driver, farm-labourer, guide, munition maker. There is nothing new in the function of the ministering angel: the myriad nurses in hospital here or abroad are only carrying out, though in greater numbers than ever before, what has always been women’s mission. But whenever he sees one of these new citizens, or hears fresh stories of their address and ability, Mr. Punch is proud and delighted. Perhaps in the past, even in the present, he may have been, or even still is, a little given to chaff Englishwomen for some of their foibles, and even their aspirations. But he never doubted how splendid they were at heart; he never for a moment supposed they would be anything but ready and keen when the hour of need struck.

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Schmetzke, Axel. "Digitization of Library Information and Its Accessibility for People with Disabilities". W Encyclopedia of Information Science and Technology, First Edition, 880–85. IGI Global, 2005. http://dx.doi.org/10.4018/978-1-59140-553-5.ch154.

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After 20 years of digitization efforts, hardly a single type of library information resource remains that has not shifted, at least to some extent, to an electronic, Web-based format: information about the library itself, catalogs, indexes, dictionaries and encyclopedias, books and journals, tutorials, reserve materials and reference services. The online migration of these resources has opened unprecedented opportunities to people with “print disabilities”, who cannot independently access printed works because of lack of sight, dyslexia or insufficient motor control (Coombs, 2000), but who are able to access electronic text with the help of assistive input and output technology, such as modified computer keyboards and screen readers with speech or Braille output (Mates, 2000; Lazzaro, 2001).

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Ingley Iii, H. "Electric Motors". W Encyclopedia of Energy Engineering and Technology - 3 Volume Set (Print Version), 349–55. CRC Press, 2007. http://dx.doi.org/10.1201/9780849338960.ch46.

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Feringa, Ben, i Richard A. van Delden. "Molecular Switches and Motors". W Dekker Encyclopedia of Nanoscience and Nanotechnology, Second Edition - Six Volume Set (Print Version), 2424–40. CRC Press, 2008. http://dx.doi.org/10.1201/noe0849396397.ch209.

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Streszczenia konferencji na temat "Motor print"

Dei Rossi, Joseph, Ozgur Keles i Vimal Viswanathan. "Fused Deposition Modeling With Added Vibrations: A Parametric Study on the Accuracy of Printed Parts". W ASME 2019 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/imece2019-11698.

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Abstract Additive manufacturing is a potentially disruptive technology with a rapidly growing market. The recent development of RepRap style 3D printers has made this technology available to the public at a low cost. While these 3D printers are being used for a variety of purposes, many mechanical engineering students use them for prototyping in their projects. The quality of the 3D printed parts has been a concern in such cases. There are many variables within the operation of these printers that can be varied to obtain optimum print quality. This study explores the use of externally induced mechanical vibrations to the nozzle tip as a potential method to improve the quality of 3D printed parts. Induced vibration is expected to decrease the porosity of printed parts and improve the cohesion between print beads, ultimately improving their mechanical properties. The objective is to understand the positional accuracy of the prints with the added vibration and then to determine the optimum level of vibration to achieve best quality prints. For the study, the extruder filament is replaced with a pointed-tip pen that can mark the exact location where the printer delivers the material. A comparison between the locations marked by the pen with and without vibrations shows that the errors induced by the added vibration are not significantly different from those caused by the uncertainties of the printer itself. Further, this study also explores the optimum motor speeds to achieve a uniform distribution of material and determines medium motor speeds that provide maximum amplitude of vibration which are more desirable for a uniform infill.

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Danish, Muhammad, Ravi Mishra, Abid Ali Junaid i Omar Faruk Emon. "Extrusion Mechanisms for Printing Thermosetting Prepolymers". W ASME 2023 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2023. http://dx.doi.org/10.1115/imece2023-113409.

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Abstract The Direct Ink Writing (DIW) additive manufacturing method has been widely used in advanced printing applications, although it is often considered a complex and expensive system to construct. This study investigated two extrusion mechanisms that can be integrated with a gantry system for printing functional thermosetting inks. The first mechanism employs a lead screw directly connected to a bipolar stepper motor, which converts the rotary motion of the motor shaft into a linear motion. The lead screw is used to push the plunger of a syringe loaded with viscous thermosetting prepolymers. The second mechanism employs a gear system to transmit the motion from the motor shaft to the lead screw. The mechanical fixtures to hold the motor, lead screw, gears, and other components were designed and fabricated via 3D printing. Different gear ratios were examined for the gear-based system. An acrylate-based photocurable resin was thickened using fumed silica to induce non-Newtonian shear-thinning property. The study focused on various print parameters, including print speed, extrusion rate, linewidth, and ink viscosity, and tailored G-code commands were used to print different inks. The printed structures were photopolymerized using ultraviolet (UV) light. The printed outcomes were evaluated, and two extrusion mechanisms yielded comparable results. It is believed that the proposed system will make 3D printing of functional inks more accessible.

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Hatmawati, Hatmawati, Sri Hidayati, Aghnaita Aghnaita i Devi Oktavia. "Implementation Of Eco Print Activities In Stimulating Children's Fine Motor Development Based On Local Wisdom". W Proceedings of the 1st International Conference on Early Childhood Education in Multiperspective, ICECEM 2022, 26th November 2022, Purwokerto, Central Java, Indonesia. EAI, 2023. http://dx.doi.org/10.4108/eai.26-11-2022.2339539.

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Hari, Yogeshwar, i Daniel B. Meyer. "Computer Aided Analysis of a Printer Mechanism". W ASME 1991 International Computers in Engineering Conference and Exposition. American Society of Mechanical Engineers, 1991. http://dx.doi.org/10.1115/cie1991-0060.

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Abstract This paper analyzes the dynamics of a printer mechanism used for graphics printing. The torque induced in the drive motor is idealized as a step function. The friction induced in the mechanism is idealized as viscous damping. The structure of the printer mechanism is idealized to be rigid during operation of the print head drive. The Lagrangian method is used to derive a mathematical model. It is represented in a control system schematic applying feedback. A computer program written in Basic simulates the system under control, in order to predict the outputs, velocity and position, given the input, torque. The computer aided analysis enables the designer to minimize print placement error due to imprecision.

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Thakkar, Achint, Ritik Jamghare, Ravi Mishra i Omar Faruk Emon. "An Inexpensive 3D Printing System for Functional Inks Used In Electronics and Bio Applications". W ASME 2023 18th International Manufacturing Science and Engineering Conference. American Society of Mechanical Engineers, 2023. http://dx.doi.org/10.1115/msec2023-103018.

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Abstract Numerous extrusion-based 3D printing processes for electronics and bio-applications have been reported in the past decade. However, these direct ink writing (DIW) systems are mostly expensive and complex to build. Here, we report an inexpensive and open-source extrusion-based 3d printer that could be employed for printing functional inks, especially for various electronics and bio fabrication. A low-cost fused filament fabrication (FFF) 3D printer was modified to build the DIW system. An extrusion mechanism was developed with a stepper motor, a lead screw, a syringe-plunger system, and spur gears. The existing FFF heated extruder was replaced by a new extrusion mechanism. The printer was utilized to print thermosetting viscous pre-polymers. A photocurable resin was thickened using fumed silica to induce non-Newtonian shear thinning properties, and it was used for printing experiments. G-code for printing was generated using an open-source slicer software. Different extrusion rates were examined by controlling the extrusion motor rotation and speed. Also, various print parameters were investigated such as travel speed, ink viscosity, and nozzle size. The dimension of the printed geometry was studied with the change of print parameters. The printed structures were photocured using ultraviolet light. The printed geometries before and after curing were compared. To check printability for electronics, a soft pressure-sensitive membrane was 3D printed using the developed system. An acrylate-based monomer was mixed with a photoinitiator, crosslinker, fumed silica, and ionic liquid to prepare the functional ink for sensor fabrication. The printed sensor was tested under different load conditions.

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Ismaniar, Ismaniar, Jamaris Jamaris i Wisroni Wisroni. "Stimulation of GrosImproving Children’s Early Reading Skills Using Home Environmental Print Models Motor Development in Early Childhood". W Proceedings of the 5th International Conference on Education and Technology (ICET 2019). Paris, France: Atlantis Press, 2019. http://dx.doi.org/10.2991/icet-19.2019.101.

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Simeonov, Simeon M., i Ivan P. Maradzhiev. "Improving the print quality of a budget 3D FDM printer by replacing the factory-installed stepper motor drivers". W 2023 XXXII International Scientific Conference Electronics (ET). IEEE, 2023. http://dx.doi.org/10.1109/et59121.2023.10279569.

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Krishnanand i Mohammad Taufik. "Development of a Pellet and Filament Form Integrated Multi-Material Additive Manufacturing Co-Extruder". W ASME 2021 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2021. http://dx.doi.org/10.1115/imece2021-71044.

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Abstract There are two methods to 3D print a part using extrusion-based additive manufacturing technology namely filament-based and pellets/granules-based. Filament-based extrusion needed a wire form material called a filament, which is pushed by a motor and gear mechanism, into a heating zone. In the heating zone, it converts in semi-solid form and is extruded out of the nozzle to deposit in a layer-over-layer manner. This extrusion strategy needed a non-flexible filament, so it limits the variety of materials. Converting material into wire form also increases the cost of 3D printing. Pellet-based extrusion accepts the material in granules form. It is fed into the heating zone using an extrusion screw. This technology can accept a wide range of materials and eliminate the cost of producing filament. But pellet-based technology is still not being used on 3D printers, on the other hand, filament-based technology in the form of 3D printers is very popular in the market. So, in this study development of noble pellet and filament form integrated multi-material additive manufacturing co-extruder has been presented. The developed co-extruder is capable to accept material in filament form as well as pellet/granules form. This will help to 3D print a particular part with several materials. This hybrid form of the extruder is accommodating the features of both types of extrusion-based additive manufacturing. As per need, one can easily shift from filament extrusion to pellet/granules extrusion using this co-extruder.

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Baharudin, Alif Shamir, Beng Seow Chai, Nik Fahusnaza Nik Mohd Najmi, Elias Jr Bayking i Khabilashini Ravendrnathan. "Future of Directional Casing Drilling with the New Block Type High Ratio Underreamer Technology to Further Optimize the well Engineering Design and Reduce Carbon Foot Print". W IADC/SPE Asia Pacific Drilling Technology Conference and Exhibition. SPE, 2022. http://dx.doi.org/10.2118/209907-ms.

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Abstract With more wells planned in the future to be drilled in challenging formations, directional casing while drilling technology need to be on par with the demand. In Malaysia, there is a need to utilize directional casing while drilling to mitigate the risk of losses from the offset wells and when there is wellbore stability which will affect the drilling operation, especially when we drill deeper near the hydrocarbon zone. The main challenge in this field is the abrasive formation with interbedded stringer. To further optimize the well engineering by eliminating one casing design, the plan is to drill with directional casing while drilling with long 12-1/4" hole interval for the well design. Thus, there is a need to have a robust underreamer design to meet the well design’s objective, which is the new block type high ratio underreamer technology. With anti-collision issue, the Directional Casing Drilling Bottom Hole Assembly was planned to be run with motor. This will be the first assembly run globally. Thus, the pre-job planning is essential in order to deliver flawless execution. As part of the method to make this operation a success, the main challenges were identified and solved. The main challenge is the technology maturity for the underreamer from arm type high ratio underreamer to block type high ratio underreamer with more cutter density that can enlarge the hole with higher durability, and the cutting structure technology that can withstand both impact damage (from interbedded formation) and wear (from abrasive formation) with long interval of drilling footage. With the offset data obtained, the deep leech technology was applied to the cutting structure which increase the impact and wear resistance. The Cutter density per arm of block type high ratio underreamer is 200% more than the arm type high ratio underreamer, which provide more durability in drilling challenging formation. The compatibility of the block type high ratio underreamer with the motor assembly was studied for risk assessment and mitigation plan. The drilling parameter road map have been studied with the previous track record of Directional Casing Drilling as a baseline to minimize the damage to the cutting structure. With the careful planning for the first block type high ratio underreamer, the longest interval for 9-5/8" Directional Casing Drilling have been performed back-to-back for two wells in East Malaysia with challenging formation. The well design successfully eliminates 1 string by having 13-3/8" casing only as a conduit, which save approximately USD 400,000 and 48 hours in the flat time per well compared with the conventional well design cost from the offset well. The introduction of block type high ratio underreamer expand the directional casing drilling application into more challenging formation with longer interval. This will greatly change the well engineering design and reduce the carbon footprint by eliminating surface casing requirement.

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Luning-Prak, Dianne, Brad Baker i Jim Cowart. "Engine O-Rings Produced Using Additive Manufacturing". W WCX SAE World Congress Experience. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2023. http://dx.doi.org/10.4271/2023-01-0893.

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<div class="section abstract"><div class="htmlview paragraph">Additive Manufacturing (AM) using stereolithography (SLA) was applied to produce engine O-rings using two different flexible polymer printing materials, Flex 80A and Elastic 50A. Print orientation of the O-ring in the SLA 3D printer is important, with the horizontal configuration most commonly providing for the smoothest final O-ring printed surface due to the lack of printing support tabs required. AM printing tabs lead to O-ring ‘marks’ (non-smooth surfaces) that were evaluated using the Society of Automotive Engineers SAE AS871B standard. It was seen that numerous printing approaches produced ‘marks’ that were larger than acceptable, which shows that these studied AM processes can not replace traditional methods of O-ring manufacture. However, further evaluation was pursued to explore possible remote emergency usage of these O-rings.</div><div class="htmlview paragraph">Printed O-rings were next tested-soaked in engine related fluids in order to characterize O-ring swelling behavior. Volume swelling was greatest with acetone (100% plus increase) for both the stock O-rings tested and moderately less so with the 3D printed O-rings. Flex 80A printing material swelling was moderately less than using Elastic 50A printing material. Swell testing using motor oil and engine fuels showed significantly less swelling with volume change increases on the order of ten to fifteen percent. Pressure vessel and engine-based testing was also performed with the printed O-rings demonstrating good performance (no leaks) under operation, suggesting that shorter term emergency-based operation using these AM printed O-rings may be acceptable.</div></div>

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