Residual stresses in glass after molding and its influence on optical properties

被引：21
|
作者：
Yi, A. Y. [1 ]
Tao, B. [1 ]
Klocke, F. [2 ]
Dambon, O. [2 ]
Wang, F. [2 ]
机构：
[1] Ohio State Univ, Dept Integrated Syst Engn, 210 Baker Syst,1971 Neal Ave, Columbus, OH 43210 USA
[2] Fraunhofer Inst Prod Technol, D-54004 Aachen, Germany
来源：
1ST CIRP CONFERENCE ON SURFACE INTEGRITY (CSI) | 2011年 / 19卷
关键词：
Glass; Residual Stress; Finite Element Method (FEM); Optical;
D O I：
10.1016/j.proeng.2011.11.132
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
Compression molding of glass optics is gradually becoming a viable manufacturing process for high precision optical lenses. However, during cooling, glass properties undergo a small amount of changes due to structural relaxation. As a result, residual stresses are trapped inside the molded glass lenses. In this research, compression molded lenses were studied using the birefringence method assisted by the finite element analysis. The experimental and simulation results showed that compression molding process can be controlled to a very high precision providing that the proper cooling is applied during cooling. In addition, numerical analysis using finite element analysis also provides a better understand of the cooling process and offers an economic solution for process optimization for low cost glass lens production. (C) 2012 Published by Elsevier Ltd. Selection and peer-review under responsibility of Prof. E. Brinksmeier
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页数：5
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