Ultrasonic stress analysis of a strip by the time-averaged photoelastic method

Wei-Chung Wang; Ying-Huang Tsai

doi:10.1117/12.621913

12 April 2005 Ultrasonic stress analysis of a strip by the time-averaged photoelastic method

Wei-Chung Wang, Ying-Huang Tsai

Proceedings Volume 5852, Third International Conference on Experimental Mechanics and Third Conference of the Asian Committee on Experimental Mechanics; (2005) https://doi.org/10.1117/12.621913
Event: Third International Conference on Experimental Mechanics and Third Conference of the Asian Committee on Experimental Mechanics, 2004, -, Singapore

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-J_O(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-J_O(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.

Citation Download Citation

Wei-Chung Wang and Ying-Huang Tsai "Ultrasonic stress analysis of a strip by the time-averaged photoelastic method", Proc. SPIE 5852, Third International Conference on Experimental Mechanics and Third Conference of the Asian Committee on Experimental Mechanics, (12 April 2005); https://doi.org/10.1117/12.621913

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