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Proceedings Paper

Measurement Of Residual Stresses By Modern Optical Methods (II)
Author(s): Jingtang Ke; Yaowu Ma; Caifu Zhao
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Paper Abstract

The paper deals with direct measurement of residual stresses by means of multiple image-shearing interferometry in combination with stress release at drilling hole. In order to facilitate collection of information and to obtain three sets of clear fringe patterns simultaneously, experimental studies were made to testify the stress condition of thin rectangular plate clamped at four edges, subject to concentrated central loading, by means of a kind of unequal right-angled wedge, to probe into the reliability of the method. The experimental results agree closely with theoretical values. Preliminary findings of measurements of simulated residual stresses in specimens subject to uniaxial tension with multiple image-shearing cameras as well as surface displacement field formed as a result of release of residual stresses in weldment by means of sandwich holography prove that the aforesaid methods may find application in direct in-situ measurement of residual stresses for engineering project using modern optical method.

Paper Details

Date Published: 16 July 1986
PDF: 8 pages
Proc. SPIE 0599, Optics in Engineering Measurement, (16 July 1986); doi: 10.1117/12.952379
Show Author Affiliations
Jingtang Ke, Zhengzhou Institute of Technology (China)
Yaowu Ma, Zhengzhou Institute of Technology (China)
Caifu Zhao, Zhengzhou Institute of Technology (China)

Published in SPIE Proceedings Vol. 0599:
Optics in Engineering Measurement
William F. Fagan, Editor(s)

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