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Influence of Injection Molding Conditions on the Birefringence of Disks  

Lee, Ho-Sang (충주대학교 항공기계설계학과)
Park, Min-Gyu (충주대학교 항공기계설계학과 산업대학원)
Publication Information
Journal of the Korean Society of Manufacturing Process Engineers / v.9, no.5, 2010 , pp. 28-33 More about this Journal
Abstract
A computer code was developed to simulate all three stages of the injection molding process: filling, packing and cooling by finite element method. The constitutive equation used here was compressible Leonov model. The PVT relationship was assumed to follow the Tait equation. The flow-induced birefringence was related to the calculated flow stresses through the linear stress-optical law. Based on the simulation, the Taguchi method was used to investigate the influences of injection molding conditions on the birefringence of a center gate disk. In addition, the optimal processing conditions were selected to minimize the birefringence and the birefringence difference along the positions of the disk.
Keywords
Birefringence; Viscoelasticity; Injection Molding; Mold;
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Times Cited By KSCI : 1  (Citation Analysis)
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