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Dissertations / Theses on the topic 'Assist Gas'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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1

Lo, Justin H. "Cellularized Collagen-Membrane Lung Assist Devices for Efficient Gas Transfer." Thesis, Harvard University, 2017. http://nrs.harvard.edu/urn-3:HUL.InstRepos:32676121.

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Chronic lower respiratory disease afflicts over 5% of the United States population, leading to over 145,000 deaths annually. There remains a need for safer and more durable alternatives to lung transplant for patients who progress to end-stage lung disease. Portable or implantable gas oxygenators based on microfluidic technologies can address this need, though harnessing their potential depends on efficient and biocompatible design. Incorporating biomimetic materials into such devices can help replicate efficient native gas exchange function and additionally support cellular components. In thi

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2

Aftel, Robert. "Effect of atomization gas properties on droplet atomization in an "air-assist" atomizer." Master's thesis, Virginia Tech, 1996. http://hdl.handle.net/10919/32599.

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<p>Air, nitrogen, argon and carbon dioxide were used as the atomizing gas in an 'air-assist' spray nozzle to determine the effect of these gases on mean droplet size, number density, velocity and their distributions in kerosene fuel spays and spray flames using a two dimensional phase Doppler interferometer. Data have been obtained with these atomizing gases using a base, air assisted case as a reference, since this is the most commonly used atomizing fluid in almost all applications. Comparisons were made between the gases on a mass and momentum flux basis. Both burning and nonburning sprays

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3

Abate, Vito J. "Natural gas ignition delay study under diesel engine conditions in a combustion bomb with glow plug assist." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/MQ58696.pdf.

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4

MagalhaÌƒes, Rui. "Cryogenic gas-assisted injection moulding." Thesis, University of Warwick, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.251053.

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5

Willems, Paul. "Gas assisted mechanical expression of oilseeds." Enschede : University of Twente [Host], 2007. http://doc.utwente.nl/58041.

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6

Venter, Magdalena Jacomina. "Gas assisted mechanical expression of cocoa nibs." Enschede : University of Twente [Host], 2006. http://doc.utwente.nl/57132.

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7

Narayanan, Shankar. "Gas assisted thin-film evaporation from confined spaces." Diss., Georgia Institute of Technology, 2011. http://hdl.handle.net/1853/42780.

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A novel cooling mechanism based on evaporation of thin liquid films is presented for thermal management of confined heat sources, such as microprocessor hotspots. The underlying idea involves utilization of thin nanoporous membranes for maintaining microscopically thin liquid films by capillary action, while providing a pathway for the vapor generated due to evaporation at the liquid-vapor interface. The vapor generated by evaporation is continuously removed by using a dry sweeping gas keeping the membrane outlet dry. This thesis presents a detailed theoretical, computational and experimental

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8

Brzeski, Ian. "Gas-assisted compression moulding of glass reinforced polypropylene." Thesis, University of Warwick, 2009. http://wrap.warwick.ac.uk/3627/.

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A new process of combining gas injection with compression moulding was developed and studied in this research work. The process is called Gas Assisted Compression Moulding (or GasComp). The principle is based on the injection of nitrogen gas during a conventional compression moulding cycle. The flow of the material due to the compressive force of the press is assisted by the injection of gas into the centre of the molten material. The gas assists in the flow by coring out the material, reducing the weight by up to 45 percent and increasing the dimensional stability of the component. Novel glas

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9

Eyu, Gaius Debi. "Flow-assisted corrosion in coal seam gas infrastructure." Thesis, Queensland University of Technology, 2017. https://eprints.qut.edu.au/112500/1/Gaius%20Debi_Eyu_Thesis.pdf.

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This thesis contributes to investigation of some critical factors that affect the corrosion behaviour of mild steel in coal seam gas (CSG) produced water (single phase) and explores mitigation approaches using eco-friendly corrosion inhibitors. This work includes the study of the effect of surface roughness, fluid flow, surface roughness, immersion time, water chemistry (bicarbonate ion, chloride ion and dissolved oxygen) on the electrochemical behaviour of mild steel in CSG-produced water and simulated conditions using rotating disc electrode (RDE). Ipomoea batatas leaf extract (IBLE) and the

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10

Shard, Alexander Gordon. "Plasma assisted thin film formation." Thesis, Durham University, 1992. http://etheses.dur.ac.uk/5736/.

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Thin films of fluorocarbon-based polymers can be deposited by plasma assisted polymerisation of various perfluorocarbons. The chemical natures of plasma polymers of hexafluoropropene and perfluorohexane were examined as a function of power, flow rate and position in reactor. Polymerised hexafluoropropene displayed increased fluorine contents at high powers; this is at odds with perfluorohexane which demonstrated lower fluorine contents. Differing reaction mechanisms between saturated and unsaturated perfluorocarbons were proposed to explain this. Both perfluorocarbons were found to give increa

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11

Zheng, Tianmin. "An investigation of gas-assisted injection molding : effects of process variables on gas bubble formation /." The Ohio State University, 1994. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487861396026928.

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12

Eckert, Zakari Sebastian. "Energy Transfer in Non-Equilibrium Reacting Gas Flows: Applications in Plasma Assisted Combustion and Chemical Gas Lasers." The Ohio State University, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=osu1515099058664013.

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13

Chan, Ka Cheung. "Electrical measurements and UV-assisted gas detection of ZnO nanowires." Thesis, Swansea University, 2014. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.678579.

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14

Mulvaney-Johnson, Leigh. "Gas assisted injection moulding : experiment and simulation : industrial machine experimental studies of the effect of process variables on gas bubble formation, and with simulation based upon a pseudo-concentration method." Thesis, University of Bradford, 2001. http://hdl.handle.net/10454/4983.

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The gas assisted injection moulding process is an important extension to conventional injection moulding. Gas assist can be applied in a number of ways, but here the penetration of a gas bubble through the polymer melt is of interest. A 3D fi nite element implementation of a pseudo concentration method is employed to simulate the primary penetration of the gas bubble. The wall thickness prediction is an important result since the extent of bubble penetration is sensitive to the remaining melt fraction. A number of methods for experimental measurement are developed to measure characteristics of

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15

O'Connell, Jacques Herman. "Ruthenium and palladium assisted silver transport in silicon carbide." Thesis, Nelson Mandela Metropolitan University, 2012. http://hdl.handle.net/10948/d1010960.

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16

Wang, Yijie. "The Effect Of Non-Newtonian Rheology On Gas-Assisted Injection Molding Process." The Ohio State University, 2003. http://rave.ohiolink.edu/etdc/view?acc_num=osu1053622915.

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17

Al-Shara, Nawar Kader Augla. "Splitting steam via eutectic molten hydroxide assisted electrolysis for hydrogen gas production." Thesis, University of Nottingham, 2018. http://eprints.nottingham.ac.uk/52109/.

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In recent years, the development of hydrogen gas production from renewable energy sources has become a major area of focus to cover the shortfalls in demands of global energy. The development of water electrolysis can be considered as a promising technique in this regard for increasing the production of hydrogen fuel to meet energy requirements. In this research, the splitting steam via eutectic molten hydroxide (NaOH-KOH; 49-51 mol%) electrolysis for hydrogen gas production has been electrochemically investigated. A new reference electrode for eutectic molten hydroxide has been fabricated by

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18

Salazar, Vanegas Jesus. "Development of an improved methodology to assess potential unconventional gas resources in North America." Texas A&M University, 2003. http://hdl.handle.net/1969.1/5894.

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Since the 1970s, various private and governmental agencies have conducted studies to assess potential unconventional gas resources, particularly those resources contained in tight sands, fractured shales, and coal beds. The US Geological Survey (USGS) has assessed the amount of unconventional gas resources in North America, and its estimates are used by other government agencies as the basis for their resource estimates. While the USGS employs a probabilistic methodology, it is apparent from the resulting narrow ranges that the methodology underestimates the uncertainty of these undiscovered,

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19

Liu, Pou, Fumihito Arai, and Toshio Fukuda. "Cutting of carbon nanotubes assisted with oxygen gas inside a scanning electron microscope." American Institite of Physics, 2006. http://hdl.handle.net/2237/8766.

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20

Uhuegbulem, Ikenna. "Strategies for Oil and Gas Asset Retirement Sustainability in Alberta, Canada." ScholarWorks, 2019. https://scholarworks.waldenu.edu/dissertations/6812.

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Oil and gas companies in Alberta, Canada lose millions of dollars per year due to ineffective management of retired assets. Ineffective management of inactive oil and gas assets in Alberta has led to over 80,000 inactive wells, highlighting the practice of prolonged deferment of asset end-of-life costs. Using the corporate sustainability model and asset management concept model as frameworks, this multiple case study was conducted to explore the strategies that asset managers in small- and medium-sized oil and gas companies used to manage retired assets effectively to increase organizational s

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21

Ouyang, Donald N. B. "The dynamic modelling of industrial oxygen gas jet assisted CO₂ laser cutting of metal." Thesis, University of Glasgow, 1998. http://theses.gla.ac.uk/2475/.

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22

Schitco, Cristina [Verfasser]. "NH3-Assisted Synthesis of Silicon Oxycarbonitride Ceramics for Gas Capture and Separation / Cristina Schitco." Munich : GRIN Verlag, 2016. http://d-nb.info/111238670X/34.

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Schiţco, Cristina [Verfasser]. "NH3-Assisted Synthesis of Silicon Oxycarbonitride Ceramics for Gas Capture and Separation / Cristina Schitco." München : GRIN Verlag, 2016. http://d-nb.info/1175636681/34.

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24

Wang, Tai-Siang, and 王太詳. "CAE Optimization Analysis on Gas Permeability of Plastic Gas Assist Injection Molding." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/q3k2m7.

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碩士<br>國立臺北科技大學<br>工程科技研究所<br>105<br>In this study, the effects of mold temperature, melt temperature, gas pressure, gas delay time and the size of gas-assisted product on the permeability of gas-assisted injection molding were investigated. In this paper, the experimental results of "secondary infiltration in gas-assisted injection molding of ribbed plate" are compared with Moldflow analysis software. The single-parameter experimental method and the simulation of different edge shape of ribs are used to analyze the gas-assisted injection molding Airflow cross-section test results were compared

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25

Chang, Jer-Haur, and 張哲豪. "A Study of the Fiber Exposure Phenomenon in Gas Assist Injection Molded Parts." Thesis, 1999. http://ndltd.ncl.edu.tw/handle/51809877979282144689.

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碩士<br>長庚大學<br>機械工程研究所<br>87<br>Gas assist injection molding has increasingly become an important process in industry because of its tremendous flexibility in the design and manufacture of plastic parts. However, there are some unsolved problems that confound the overall success of this technique. This report was to study the surface roughness phenomenon occurring in gas assist injection molded thermoplastic composites. The material used was 35% glass-fiber filled Nylon-6 composites. Experiments were carried out on a 80-ton injection molding machine equipped with a high pressure nitrogen-ga

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26

Sam, Zi-San, and 沈子珅. "Inverse Modeling and Optimization of the Processing Parameters of Gas Assist Injection Molding Process by Neural Networks." Thesis, 2000. http://ndltd.ncl.edu.tw/handle/63224250304898968679.

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碩士<br>長庚大學<br>機械工程研究所<br>88<br>The effort of this thesis is to derive the optimal processing parameters of the Gas-Assisted Injection Molding process (GAIM) by the use of an artificial neural network (ANN). This approach is proposed because the effects of processing conditions, such as the applied pressure, plug material, its geometry and extruding velocity, and the local temperature, are highly nonlinear and fully coupled. The complexity of the process makes the operation design a difficult task, even with the existence of a reliable physical model. Usually, prolonged tests must be conducted.

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27

Huang, Kuan-Pin, and 黃冠賓. "Ionic Liquids Used to Assist a Metallomesogen as Gas Chromatography Stationary Phase and Coated on a Fiber for Solid Phase Microextraction." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/16215583402974234393.

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博士<br>國立臺灣大學<br>化學研究所<br>97<br>A metallomesogen of a polycatenar oxazoline copper(II) complex, [Cu(S-C12)2], that exhibited a columnar mesophase with a helical organization was prepared and employed as the stationary phase for GC separation, demonstrated on polycyclic aromatic hydrocarbons (PAHs) as model compounds. To introduce the mesogen into the capillary column, an ionic liquid (BeMIM-TfO) was used as the vehicle. The results of thermal analyses and UV-vis spectroscopy indicated that some beneficial interactions occurred between the metallomesogen and the ionic liquid. Various parameters

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28

Juang, Ying-Jie, and 莊英杰. "Numerical Simulation of Gas Penetration Phenomenon in a Gas-Assisted Injection Molding Process." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/42450690729954907791.

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碩士<br>中原大學<br>機械工程研究所<br>95<br>The numerical prediction of three-dimensional melt filling and gas penetration in a clip-shaped square tube is conducted using a compressible model in this paper. The application of a finite volume discretization and volume-of-fluid method has been demonstrated to simulate three-dimensional gas-assisted injection molding processes. The modified Cross model and Tait Equation are implemented in the numerical scheme in order to describe the rheological properties of polymers. With the help of available experimental measurements, the numerical results of our three-di

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29

Cheng, Fang-Sung, and 鄭芳松. "Development of Gas-Assisted PDMS Mold Imprinting Process." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/27489161178470618430.

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博士<br>國立臺灣大學<br>機械工程學研究所<br>95<br>For conventional hot embossing, the substrate and the stamp are brought into contact and are compressed directly by the hot platen. The accuracy and area of replication are limited due to the inherent non-uniform pressure distribution. Si-wafers are too brittle to be used as embossing the molds with the conventional hot embossing operation. To enhance close contacting and uniform pressuring during large area and curved surface imprinting, PDMS mold and gas pressure are employed in this study. This thesis probed into the research with regard to large area subst

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30

Ciou, Jyun-Kai, and 邱俊凱. "Development of CO2 gas-assisted micro embossing process." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/36277507860391907741.

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碩士<br>臺灣大學<br>機械工程學研究所<br>95<br>In conventional hot embossing, the polymer substrate is first heated to a temperature higher than its glass transition temperature(Tg); the substrate and the stamp are then brought into contact and are compressed directly by the hot plates. The accuracy and area of replication are limited due to the inherent non-uniform pressure distribution of the hot-plate compression. Besides, materials such as Si-wafers and glass are too brittle to be used as the embossing molds in the conventional hot embossing operation. This paper reports the development of a CO2–assiste

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31

Wang, Wei-Chien, and 王瑋蒨. "Conducting Polymer Assisted Nano-Oxides based Gas Sensors." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/w57r22.

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碩士<br>國立交通大學<br>材料科學與工程學系所<br>108<br>In recent decades, with the rapid development of industrialization and urbanization, automobile exhaust and serious air pollution from factories have become a huge threat to human growing and survival. Therefore, the gas sensors which can effectively detect these hazardous gases are urgently needed. The US Occupational Health and Safety Administration stipulates the maximum concentration of hazardous gases allowed in the workplace during eight working hours in a day; for example, NO2, NH3, CO and Ethanol should be less than 5, 25, 50 and 1000ppm, respective

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Huang, Hsuan-Yuan, and 黃宣淵. "Study on the Gas Counter Pressure in Gas-Assisted Injection Molding by Melt drag." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/58739064648125154580.

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碩士<br>中原大學<br>機械工程研究所<br>103<br>Gas-assisted injection molding technology(GAIM) a kind of green energy in plastic injection molding, which is injecting gas into the short shot melt in the packing stage. Compressed gas is used as the medium to push melt and maintain pressure. Thus, plastic can be saved effectively to reduce carbon. Though gas-assisted injection molding has some great improvements in injection quality, compressed gas is still not easy to control preciously, therefore, the final applied products have some defects such as insufficient penetration length, uneven thickness and une

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王先毅. "The Correlation of Gas Penetration/Permeation to Structural Performance in Gas-Assisted Injection Molded Parts." Thesis, 1997. http://ndltd.ncl.edu.tw/handle/23782762334713789534.

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碩士<br>中原大學<br>機械工程學系<br>85<br>The purpose of the present study is to investigate the Correlation of gas penetration／permeation to structure performance in gas-assisted injection inolded parts. Meanwhile, the accuracy and the applicability of ANSYS 3D and 2D model for the analysis of part structure performance. And make analysis of the gas-assisted monitor supporter. From the present study, the following conclusions have been found: Gas penetration／permeation to structure performance in gas-assisted injection molded parts have not obviously stress concentration effect. From bending e

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Chang, Yeong-Shyi, and 張永錫. "Experimental Study and CAE Simulation of Gas-Channel Balancing On Gas-Assisted Injection Molding Process." Thesis, 1994. http://ndltd.ncl.edu.tw/handle/84908919359207962630.

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35

Wu, Yi-Chuan, and 吳逸群. "Unstable Penetrations in Gas Assisted Injection Molded Bifurcation Parts." Thesis, 2000. http://ndltd.ncl.edu.tw/handle/84623380799932072232.

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碩士<br>長庚大學<br>機械工程研究所<br>88<br>Gas assist injection molding has become an increasingly important process in industry because of its tremendous flexibility in the design and manufacture of plastic parts. However there are some unsolved problems that confound the overall success of this technique. Unstable gas penetration in molded bifurcation parts caused by inappropriate mold/part designs and processing conditions is one of them. This report was to study the gas penetration behavior in gas assist injection molded bifurcation parts. Experiments were carried out on an 80-ton injection moldin

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Hsieh, Wen-Hao, and 謝文豪. "The Intelligent Control of Gas-Assisted Injection Molding System." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/09288108772197083376.

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碩士<br>國立臺北科技大學<br>車輛工程系碩士班<br>91<br>The object of this research is to develop an intelligent controller for controlling the gas-assisted injection molding system. The application of model based classical control theory needs accurate system''s mathematical model for designing controller. However, in tradition injection molding, the macromolecule plastics is unsteady flowing in the process of being stuffing, so it''s difficult to establish or estimate its mathematic model. In this research, the model-free intelligent control strategy was employed to control the gas-assisted injection molding sy

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Wang, Chia-Chiang, and 王家強. "The High-Pressure Control of Gas-Assisted Injection Molding." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/77225092847543535510.

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碩士<br>國立臺北科技大學<br>車輛工程系碩士班<br>91<br>The mathematical model of gas-assisted injection molding system with nonlinear dynamic is difficult to establish accurately. In this study, the model free intelligent control strategies were proposed to control this system for investigating control performances. In addition, the C-Mold software of AC Company in USA was employed to simulate analysis in gas fluid, cooling temperate, pressure distribution and gas blow, respectively. The filling short shot, filling, holding pressure filling, inside stress and deformed distribution after cooling situations in inj

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Tang, Su Ying, and 蘇英棠. "Integrated Expert System for Gas-Assisted Injection Molding Process." Thesis, 1999. http://ndltd.ncl.edu.tw/handle/09694689705110698015.

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碩士<br>中原大學<br>機械工程學系<br>87<br>The gas-assisted injection molding process has been very popular in recent years. Although it can certainly help in improving part quality and resolve some difficult problems encountered in traditional injection molding process, the process is truly more complicated with the injected gas. In this system, the fuzzy logic is integrated with knowledge base to create inference engine to store, extract and combine expertise in gas-assisted injection molding process. In addition, Neural Network is used to create the learning ability and Taguchi method is us

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Chen, Chien-Hung, and 陳建宏. "Integrated Intelligent System for Gas-Assisted Injection-Molding Process." Thesis, 2001. http://ndltd.ncl.edu.tw/handle/85995438517075780598.

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碩士<br>中原大學<br>機械工程研究所<br>89<br>With the growing usage of plastic products, many efforts have been made to raise quality and efficiency. Good and steady quality must take account of whole process procedure for injection molding, including polymer, mold design, process parameters, and molding machines. The process of gas-assisted injection molding has highly complicated all related aspects, including mold design, gas channels, and processing. In addition, most design and processing knowledge are based on trial-and-error experience. An integrated intelligent system is to synthesize the knowled

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Lin, Yi-Shiou, and 林宜秀. "Development of Patterned Silicon Substrate by Gas-Assisted Imprinting." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/47338162695570025100.

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碩士<br>國立臺灣科技大學<br>機械工程系<br>103<br>This study is to develop the manufacturing technology of patterning on Silicon substrate for high power GaN (Gallium Nitride) devices. Patterning problem is the most important and major issue of epitaxial growth of GaN on Silicon. The stepper lithography is usually employed or modified for the periodical patterning processing, but it can not meet the industrial demand for high resolution pattern fabrication with low cost and high throughput. This study tries to use gas-assisted imprinting instead of stepper lithography. Gas-assisted design can achieve pressure

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Jung, Peter Ungyeong. "Development of Innovative Gas-assisted Foam Injection Molding Technology." Thesis, 2013. http://hdl.handle.net/1807/43608.

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Injection molding technology is utilized for a wide range of applications from mobile phone covers to bumper fascia of automotive vehicles. Foam injection molding (FIM) is a branched manufacturing process of conventional injection molding, but it was designed to take advantage of existing foaming technology, including material cost saving and weight reduction, and to provide additional benefits such as improvement in dimensional stability, faster cycle time, and so on. Gas-assisted injection molding (GAIM) is another supplemental technology of injection molding and offers several advantages as

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Liao, Cheng-Yun, and 廖承運. "Study of Intermittent Gas Jet Assisted Pulsed Laser Drilling." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/43005955433357925781.

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碩士<br>國立雲林科技大學<br>機械工程系碩士班<br>101<br>Nowadays, in the laser industry, assisted laser drilling generally using the continuous jet to blow out the hole slag and reduce the heat affected from processing. However, using the continuous jet will lead to overcooling at processing, and lower the processing efficiency because we cannot exclude the hole slag efficiently. And the hole will also be affected by the continuous jet, which will result in reaming the hole diameter. Therefore, in this study, we propose a method which using the intermittent jet to assist laser drilling. Using the intermittent je

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Tsai, Tsung-Hsien, and 蔡宗憲. "Application of the Gas-Assisted Injection Molding Control System." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/6trqs6.

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碩士<br>國立臺北科技大學<br>車輛工程系所<br>93<br>Traditional injection molding machine (TIMM) generally employs an open-loop control strategy for performing injection molding of plastic products.However, such control strategy cannot satisfy for injection molding requirement in complicated geometric shape with large size or hollow plastic products.Therefore, this work developed a closed-loop control strategy to control the TIMM during the filling and holding phases of injection molding;then the high-pressure gas of the gas assisted injection molding system was applied in holding phase of the post-filling proc

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Chang, Kwang-Huei, and 張光輝. "A Study of the Secondary Gas Penetration and Surface Quality of Gas-Assisted Injection Molded Parts." Thesis, 2001. http://ndltd.ncl.edu.tw/handle/65788236490371942426.

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碩士<br>長庚大學<br>機械工程研究所<br>89<br>Full-shot gas assisted injection molding has the advantages of eliminating the switchover mark which usually occurs on the surface of short-shot gas assisted injection molded parts. This report is devoted to investigate the effects of different processing parameters on the length of gas penetration in full-shot gas assisted injection molded parts. The first part of this report is to optimize the gas penetration of molded parts. An L’18 experimental matrix design based on the Taguchi method was conducted to investigate the processing factors that affect the length

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Lin, Yu-Wan, and 林鈺婉. "Study of Gas Penetration Characteristics in Gas-Assisted Injection Molding by Three-Dimensional Computer-Aided Engineering." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/ea3977.

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碩士<br>中原大學<br>機械工程研究所<br>91<br>Gas-assisted injection molding is an innovative molding process. Although GAIM can greatly improve product quality, it is difficult to control gas penetration in a desired way. Therefore, mold designers must try and error repeatedly in order to obtain optimal processing conditions. Commercial CAE software can offer solutions to design products better and economically. But gas penetration characteristics are not appeared in 2.5D simulation, so 3D real elements are necessary to be used in simulation of gas-assisted injection molding. In this research, we study gas

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Lin, Yi-Chang, and 林益樟. "Investigation on the System Establishment for Gas-Assisted Wax Injection Molding and Characteristics of Gas Penetration." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/56425124576186593982.

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博士<br>中原大學<br>機械工程研究所<br>99<br>The wax injection is the initial stage of the investment casting process which is essential to the result of casting such as the quality and accuracy on the product. The gas-assisted injection molding possesses the ability of hollowing the core of product, reducing the shrinkage and warpage so as to enhance the precision on part dimension. Using the gas-assisted technology on the wax injection molding is an innovative molding process. The applications on the wax injection combined with gas-assisted injection molding has no systematic studied yet, therefore, the p

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簡仁德. "Study of mechanical properties in gas-assisted injection molded parts." Thesis, 1998. http://ndltd.ncl.edu.tw/handle/58882750202523929555.

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Pu, Mei Hua, and 普美華. "Multi-Mediumization of Application Technology for Gas-Assisted Injection Molding." Thesis, 1996. http://ndltd.ncl.edu.tw/handle/53055167955276362640.

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Huang, Hsin-Yi, and 黃信義. "Study on Packing Effects of External Gas-Assisted Injection Molding." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/95960128436955762245.

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碩士<br>中原大學<br>機械工程研究所<br>95<br>ABSTRACT The polymer has become the basic material of products recently. Then injection molding is widely used in the polymer process. Because of its advantages such as fast, light, low-cost and all-in-one. Nowadays products are getting thinner and larger. The most important thing for products is to prevent shrinkage and warpage, but it is not enough by using melt packing. So external gas molding has developed for solving these problems. In this study, we build a rectangular mold with high L/T (>100). Then we measured pressure by three pressure sensors which i

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Yang, Ming-Hsien Ou, and 歐陽銘賢. "Study of Metal Powder Injection Molding Using Gas Assisted Technology." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/tnasnj.

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碩士<br>中原大學<br>機械工程研究所<br>106<br>Metal Injection Molding (MIM) is a manufacturing method combining with injection molding process and powder metallurgy process. De-binding process takes the longest time in all process. As the volume of product is large, it will take doubling time on de-binding process. Utilizing the gas-assisted injection molding (GAIM) can let the product be hollow. Therefore, the purpose of the study was to reduce the time on de-binding process by combining with GAIM and MIM. One dimensional tube was utilized to individually investigate the effect of gas assisted injection m

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