Measurement Of Residual Stresses By Modern Optical Methods (II)

Jingtang Ke; Yaowu Ma; Caifu Zhao

doi:10.1117/12.952379

16 July 1986 Measurement Of Residual Stresses By Modern Optical Methods (II)

Jingtang Ke, Yaowu Ma, Caifu Zhao

Proceedings Volume 0599, Optics in Engineering Measurement; (1986) https://doi.org/10.1117/12.952379
Event: 1985 International Technical Symposium/Europe, 1985, Cannes, France

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.

Citation Download Citation

Jingtang Ke, Yaowu Ma, and Caifu Zhao "Measurement Of Residual Stresses By Modern Optical Methods (II)", Proc. SPIE 0599, Optics in Engineering Measurement, (16 July 1986); https://doi.org/10.1117/12.952379

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