Caustic phenomena in holographic interferometry

Bingheng Xiong; Junchang Li; Liyun Zhong; Xiaoxu Lu; Zhengrong Wang; Zhaoyong Xu; Runhai Yang; Jinming Zhao; Shunyun Chen

doi:10.1117/12.488217

4 June 2003 Caustic phenomena in holographic interferometry

Bingheng Xiong, Junchang Li, Liyun Zhong, Xiaoxu Lu, Zhengrong Wang, Zhaoyong Xu, Runhai Yang, Jinming Zhao, Shunyun Chen

Author Affiliations +

Proceedings Volume 5005, Practical Holography XVII and Holographic Materials IX; (2003) https://doi.org/10.1117/12.488217
Event: Electronic Imaging 2003, 2003, Santa Clara, CA, United States

Abstract

In a series of the experiments of real-time holographic interferometry, some dark shadow areas appear among the interference fringes. The appearing of the dark shadow area plays a very important role in the fracture process. We find that the appearing of these dark shadow regions are the phenomena of caustic in Fracture Mechanics. The shadow region is so called shadow spot in Fracture Mechanics and the factor of stress intensity can be calculated by measuring the size of the correosponding length of the shadow spot and the strain field can be calculated by traditional holographic method. Therefore, holographic method and caustic method can be combined together in holographic interferometry and it will lead to a wide application in Experimental Mechanics.

Citation Download Citation

Bingheng Xiong, Junchang Li, Liyun Zhong, Xiaoxu Lu, Zhengrong Wang, Zhaoyong Xu, Runhai Yang, Jinming Zhao, and Shunyun Chen "Caustic phenomena in holographic interferometry", Proc. SPIE 5005, Practical Holography XVII and Holographic Materials IX, (4 June 2003); https://doi.org/10.1117/12.488217

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