Whole-field digital measurement of principal stress directions in photoelasticity

被引：14
|
作者：
Chen, TY [1 ]
Lin, CH [1 ]
机构：
[1] Natl Cheng Kung Univ, Dept Mech Engn, Tainan 70101, Taiwan
来源：
OPTICS AND LASERS IN ENGINEERING | 1998年 / 30卷 / 06期
关键词：
photoelasticity; principle stress directions; whole-field digital measurement;
D O I：
10.1016/S0143-8166(98)00056-6
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A method that uses three light-field isoclinic images and the associated light-field unloaded model (or white) images for whole-field digital determination of the principal stress directions in photoelasticity is presented. Relevant theory is derived and explicit conditions for directly determining the directions to the range 0-pi/2 are given. Tests of this method on a directly loaded two-dimensional disc and a stress frozen photoelastic slice are demonstrated. The results agree well with the values obtained from the manual method and/or the theory. (C) 1999 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码：527 / 537
页数：11
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