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Proceedings Paper

Ultrasonic stress analysis of a strip by the time-averaged photoelastic method
Author(s): Wei-Chung Wang; Ying-Huang Tsai
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Paper Abstract

Based on the time-averaged technique, a digital photoelastic system was employed to observe the stress distribution generated by an ultrasonic wave impinged at the edge of a strip. According to the classical photoelastic theory, light intensities emerging from the analyzer were formulated and expressed in the form of 1-JO(Δ), where Jo is the zeroth-order Bessel function. This new technique is called the time-averaged photoelastic method. To verify the proposed theory, the distribution of 1-JO(Δ) was superimposed onto the distribution of gray level of the experimentally obtained photoelastic fringe pattern. Except regions near the edges and the center of fringes, qualitatively well-matched results were found.

Paper Details

Date Published: 12 April 2005
PDF: 7 pages
Proc. SPIE 5852, Third International Conference on Experimental Mechanics and Third Conference of the Asian Committee on Experimental Mechanics, (12 April 2005); doi: 10.1117/12.621913
Show Author Affiliations
Wei-Chung Wang, National Tsing Hua Univ. (Taiwan)
Ying-Huang Tsai, National Tsing Hua Univ. (Taiwan)


Published in SPIE Proceedings Vol. 5852:
Third International Conference on Experimental Mechanics and Third Conference of the Asian Committee on Experimental Mechanics
Chenggen Quan; Fook Siong Chau; Anand Asundi; Brian Stephen Wong; Chwee Teck Lim, Editor(s)

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