Influence of Injection Molding Conditions on the Birefringence of Disks

사출성형 조건이 디스크의 복굴절에 미치는 영향

  • 이호상 (충주대학교 항공기계설계학과) ;
  • 박민규 (충주대학교 항공기계설계학과 산업대학원)
  • Received : 2010.07.27
  • Accepted : 2010.10.07
  • Published : 2010.10.30

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

References

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