Optimum design of process conditions to minimize residual stresses and birefringence in injection-molded parts

Sejin Han, Y. J. Huh, Shinill Kang, K. K. Wang

Research output: Contribution to conferencePaper

1 Citation (Scopus)

Abstract

In this paper, a theoretical study has been made to reduce the residual stresses and birefringence in the injection-molded parts. An optimization program has been used to minimize the residual stresses and birefringence calculated from a simulation program. The thermally induced stress has been calculated using a linear viscoelasticity model. The flow stress and birefringence has been calculated using the Leonov's viscoelasticity model. This has been applied to the injection molding of a circular disc and a plate. The optimization has been done either by changing process variables while maintaining the mold temperature constant or by varying the mold-wall temperature with time. This study shows that significant reduction in residual stress and birefringence is possible through the optimization of processing conditions.

Original languageEnglish
Pages1237-1252
Number of pages16
Publication statusPublished - 1995 Dec 1
EventProceedings of the 1995 ASME International Mechanical Congress and Exposition - San Francisco, CA, USA
Duration: 1995 Nov 121995 Nov 17

Other

OtherProceedings of the 1995 ASME International Mechanical Congress and Exposition
CitySan Francisco, CA, USA
Period95/11/1295/11/17

Fingerprint

Birefringence
Residual stresses
Viscoelasticity
Plastic flow
Injection molding
Temperature
Optimum design
Processing

All Science Journal Classification (ASJC) codes

  • Engineering(all)

Cite this

Han, S., Huh, Y. J., Kang, S., & Wang, K. K. (1995). Optimum design of process conditions to minimize residual stresses and birefringence in injection-molded parts. 1237-1252. Paper presented at Proceedings of the 1995 ASME International Mechanical Congress and Exposition, San Francisco, CA, USA, .
Han, Sejin ; Huh, Y. J. ; Kang, Shinill ; Wang, K. K. / Optimum design of process conditions to minimize residual stresses and birefringence in injection-molded parts. Paper presented at Proceedings of the 1995 ASME International Mechanical Congress and Exposition, San Francisco, CA, USA, .16 p.
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month = "12",
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Han, S, Huh, YJ, Kang, S & Wang, KK 1995, 'Optimum design of process conditions to minimize residual stresses and birefringence in injection-molded parts' Paper presented at Proceedings of the 1995 ASME International Mechanical Congress and Exposition, San Francisco, CA, USA, 95/11/12 - 95/11/17, pp. 1237-1252.

Optimum design of process conditions to minimize residual stresses and birefringence in injection-molded parts. / Han, Sejin; Huh, Y. J.; Kang, Shinill; Wang, K. K.

1995. 1237-1252 Paper presented at Proceedings of the 1995 ASME International Mechanical Congress and Exposition, San Francisco, CA, USA, .

Research output: Contribution to conferencePaper

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N2 - In this paper, a theoretical study has been made to reduce the residual stresses and birefringence in the injection-molded parts. An optimization program has been used to minimize the residual stresses and birefringence calculated from a simulation program. The thermally induced stress has been calculated using a linear viscoelasticity model. The flow stress and birefringence has been calculated using the Leonov's viscoelasticity model. This has been applied to the injection molding of a circular disc and a plate. The optimization has been done either by changing process variables while maintaining the mold temperature constant or by varying the mold-wall temperature with time. This study shows that significant reduction in residual stress and birefringence is possible through the optimization of processing conditions.

AB - In this paper, a theoretical study has been made to reduce the residual stresses and birefringence in the injection-molded parts. An optimization program has been used to minimize the residual stresses and birefringence calculated from a simulation program. The thermally induced stress has been calculated using a linear viscoelasticity model. The flow stress and birefringence has been calculated using the Leonov's viscoelasticity model. This has been applied to the injection molding of a circular disc and a plate. The optimization has been done either by changing process variables while maintaining the mold temperature constant or by varying the mold-wall temperature with time. This study shows that significant reduction in residual stress and birefringence is possible through the optimization of processing conditions.

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Han S, Huh YJ, Kang S, Wang KK. Optimum design of process conditions to minimize residual stresses and birefringence in injection-molded parts. 1995. Paper presented at Proceedings of the 1995 ASME International Mechanical Congress and Exposition, San Francisco, CA, USA, .