Theses and Dissertations - UTB/UTPA
Date of Award
12-2009
Document Type
Thesis
Degree Name
Master of Science (MS)
Department
Manufacturing Engineering
First Advisor
Dr. Rajiv Nambiar
Second Advisor
Dr. Seokyoung Ahn
Third Advisor
Dr. Miguel Gonzalez
Abstract
The effect of processing variables on the level of gas penetration in parts fabricated by gas-assisted injection molding from two different materials was compared. The materials used were polypropylene and stainless steel powder metal/thermoplastic feedstock. Software simulation and physical experiments were conducted. Taguchi analysis was used to reduce the number of experiment trials and to find the optimum processing conditions. Four different variables were changed using nine different combinations. The processing variables are the pressure, the delay time before gas is injected, the temperature of the material injected, and the amount of the material injected. The results showed that the most critical variable in the experiment is shot size followed by gas pressure, delay time and material.
Granting Institution
University of Texas-Pan American
Comments
Copyright 2009 Edna Orozco. All Rights Reserved.
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