Residual stress measurement for injection molded components

作     者：Achyut Adhikari Thomas Bourgade Anand Asundi 

作者机构：Centre for Optical and Laser Engineering School of Mechanical and Aerospace Engineering Nanyang Technological University 

出 版 物：《Theoretical & Applied Mechanics Letters》 (力学快报（英文版）)

年 卷 期：2016年第6卷第4期

页      面：152-156页

核心收录：

学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

主　　题：Photoelasticity Birefringence Residual stress Polymethyl methacrylate 

摘      要：Residual stress induced during manufacturing of injection molded components such as polymethyl methacrylate （PMMA） affects the mechanical and optical properties of these components. These residual stresses can be visualized and quantified by measuring their birefringence. In this paper, a low birefringence polariscope （LBP） is used to measure the whole-field residual stress distribution of these injection molded specimens. Detailed analytical and experimental study is conducted to quantify the residual stress measurement in these materials. A commercial birefringence measurement system was used to validate the results obtained to our measurement system. This study can help in material diagnosis for quality and manufacturing purpose and be useful for understanding of residual stress in imaging or other anolications.