Date Approved
5-13-2025
Graduate Degree Type
Thesis
Degree Name
Engineering (M.S.E.)
Degree Program
School of Engineering
First Advisor
Dr. Wael Mokhtar
Second Advisor
Dr. Sung-Hwan Joo
Third Advisor
Dr. Alireza Mohammadzadeh
Academic Year
2024/2025
Abstract
This study investigates the influence of injection molding parameters—melt temperature, mold temperature, packing pressure, and cooling time—on volumetric shrinkage, air trap formation time, and total displacement in ABS and PP using simulation-based analysis and a Taguchi L9 DOE. Results highlight melt temperature as the most critical factor for controlling shrinkage in both materials. While packing pressure affects air trap time in ABS and melt temperature influences total displacement in PP at a 0.1 significance level, no single factor significantly impacts total displacement at a stricter 0.05 level. Complex part geometries, particularly curves, contribute to air trap formation and weld lines, leading to potential deformation. Optimizing injection parameters and mold design is crucial for minimizing these defects and enhancing part quality.
ScholarWorks Citation
Nasir, Sumaiya Benta, "Analysis of Injection Molding Parameters for Defect Reduction of ABS and PP" (2025). Masters Theses. 1146.
https://scholarworks.gvsu.edu/theses/1146
