Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 150 for “"injection molding"”.
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Low thermal inertia injection molding
Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1983.
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Injection molding of shotgun shells
… this investigation, the possibility of producing injection molded shotgun shells was explored. Also, the molding cycle and the effect of molding conditions on the mechanical properties of molded parts were investigated. The polymer obtained from a commercial brand of shotgun shells was analyzed …
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Injection Molding of Pregenerated Microcomposites
One portion of this work was concerned with injection molding pregenerated microcomposites composed primarily of poly(ethylene terephthalate) (PET) as the matrix and HX1000 as the thermotropic liquid crystalline polymer (TLCP). Several factors were examined to maximize the mechanical properties of …
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Process monitoring for plastics injection molding
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1993 and Thesis (M.S.)--Massachusetts Institute of Technology, Sloan School of Management, 1993.
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An environmental analysis of injection molding
This thesis investigates injection molding from an environmental standpoint, yielding a system-level environmental analysis of the process. There are three main objectives: analyze the energy consumption trends in injection molding machinery, explore the environmental performance of different …
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A method for precision injection molding
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1979.
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Knowledge based synthesis system for injection molding
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1985.
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Microcellular polyurethane foaming by modified reaction injection molding
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1995.
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Mechanical properties of rapid manufacturing and plastic injection molding
… D638 Type IV test specimen created using plastic injection molding and rapid prototyping. The plastic injection molded parts were tested in this research while the results of the rapid prototyping tests are from Chen-Yu Liu�s thesis at the University of Missouri. Identical procedures and equipment …
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A systematic approach to tool qualification for injection molding
Thesis (M.S.)--Massachusetts Institute of Technology, Sloan School of Management, 1993, Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1993.
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Multivariable cycle-to-cycle of an injection molding process
… output CtC feedback control is applied to an injection molding process to verify the effects on quality of the parts produced. A design of experiment is used to determine the gains of the process, regression models are developed and integral feedback control is applied. The process is actively …
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Process optimization of plastic injection molding for minimal residual stress
… in developing a procedure to optimize a plastic injection molding process by minimizing the dimensional instability of a critical feature. It documents the steps taken by a development team at the Visteon facility in Belfast, Northern Ireland to apply Design of Experiments (DOE) in process …
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High solid loading aqueous base metal/ceramic feedstock for injection molding
Increasing volume fraction of metal powder in feedstock provided lower shrinkage. Reduction of the shrinkage results in better dimensional precision. The rheology of the feedstock material plays an important role to allowing larger volume fractions of the metal powder to be incorporated in the …
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Effect of dynamic thermal boundaries on residual stresses in injection molding
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1995.
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Improved Prediction of Glass Fiber Orientation in Basic Injection Molding Geometries
… in a center-gated disk and end-gated plaque injection molding test geometry using a simulation method that has not been attempted previously. Previous work has used assumptions to simplify the fiber orientation geometry (assuming a thin cavity) or flow field (neglecting fountain flow and …
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CAPSULAR DEVICES FOR ORAL MODIFIED RELEASE OF DRUGS PREPARED BY INJECTION MOLDING
… of hydroxypropyl cellulose (HPC), prepared by injection molding (IM); it is intended to be filled with different types of drug preparations and to delay their liberation after oral administration. Such devices prepared by means of a prototype mold were demonstrated able to convey drug …
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Computer Aided Design of Side Actions for Injection Molding of Complex Parts
… and assembly cost as well as by increasing the molding cycle time. Therefore, generating shapes of side actions requires solving a complex geometric optimization problem. Different objective functions may be needed depending upon different molding scenarios (e.g., prototyping versus large …
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Cost and lead time reduction in the manufacture of injection molding tools
Thesis (M.S.)--Massachusetts Institute of Technology, Sloan School of Management, 1994, and Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1994.
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Double-sided microchannel patterning and through-hole production using injection molding of polypropylene
An experimental study was conducted on injection molded polypropylene parts with microchannels and through-holes. The quality of the microchannels and through-holes was observed with optical microscope and SEM images. A part-to-part variation analysis was conducted for ten parts by averaging the …
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