Measurement of initial stresses in epoxy resin model by phase-shift technique and the analysis of its sensitivity by computer analogy

Xinhua Ji; Yuqiang Deng; Zhende Hou; Yuwen Qin

doi:10.1117/12.468871

29 May 2002 Measurement of initial stresses in epoxy resin model by phase-shift technique and the analysis of its sensitivity by computer analogy

Xinhua Ji, Yuqiang Deng, Zhende Hou, Yuwen Qin

Author Affiliations +

Proceedings Volume 4537, Third International Conference on Experimental Mechanics; (2002) https://doi.org/10.1117/12.468871
Event: Third International Conference on Experimental Mechanics, 2002, Beijing, China

Abstract

In this paper, the four-step phase shift method is applied to obtain the initial stress components in an unloaded square plate made of epoxy resin. The computer analogy images with random noise are used to study the sensitivity and reliability of four step birefringent shift method in the low signal condition. The computer experiment shows that the reliable result could be obtained even the phase is less than 1/8 fringe order with laser noise.

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Xinhua Ji, Yuqiang Deng, Zhende Hou, and Yuwen Qin "Measurement of initial stresses in epoxy resin model by phase-shift technique and the analysis of its sensitivity by computer analogy", Proc. SPIE 4537, Third International Conference on Experimental Mechanics, (29 May 2002); https://doi.org/10.1117/12.468871

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