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

页码：527 / 537

页数：11

共 8 条

[1] THE COMPUTER-AIDED HOLOPHOTOELASTIC METHOD [J].

BROWN, GM ;

SULLIVAN, JL .

EXPERIMENTAL MECHANICS, 1990, 30 (02) :135-144

[2] DIGITAL FRINGE MULTIPLICATION IN 3-DIMENSIONAL PHOTOELASTICITY [J].

CHEN, TY .

JOURNAL OF STRAIN ANALYSIS FOR ENGINEERING DESIGN, 1995, 30 (01) :1-7

[3]

CHEN TY, 1994, P INT CONG EXPERIT M, P301

[4]

Cloud G.L., 1995, OPTICAL METHODS ENG, DOI DOI 10.1017/CBO9780511575013

[5]

Mawatari S., 1990, P 9 INT C EXP MECH C, V5, P2069

[6]

Patterson E. A., 1991, Strain, V27, P49, DOI 10.1111/j.1475-1305.1991.tb00752.x

[7] COMPUTERIZED IMAGE-PROCESSING FOR WHOLE-FIELD DETERMINATION OF ISOCLINICS AND ISOCHROMATICS [J].

SARMA, AVSSSR ;

PILLAI, SA ;

SUBRAMANIAN, G ;

VARADAN, TK .

EXPERIMENTAL MECHANICS, 1992, 32 (01) :24-29

[8] DIGITAL IMAGE-PROCESSING AND ISOCLINICS [J].

YAO, JY .

EXPERIMENTAL MECHANICS, 1990, 30 (03) :264-269

← 1 →