9 October 2000 Application of real-time holographic method to the microcrack nucleation process study
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Proceedings Volume 4221, Optical Measurement and Nondestructive Testing: Techniques and Applications; (2000); doi: 10.1117/12.402649
Event: Optics and Optoelectronic Inspection and Control: Techniques, Applications, and Instruments, 2000, Beijing, China
Abstract
The fracture process of uniformity solid is simulated by a series of transparent specimen in this study in order to discover relationships between the micro-crack nucleation process and the surrounding stress field. A real-time holographic interferometry is used to record the stress fields and its variations in the specimen while the wave-forms of ultrasonic emission stimulated by the micro-cracks are recorded by a transient automatic wave- form recorder to determine the time, location and intensity of the micro-cracks. The development process of fracture can be visualized clearly by this real-time holographic interferometry. The initial experimental study has brought some phenomena worthy of study. This method provides a powerful new approach for experimental mechanics and seismological research.
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Bingheng Xiong, Zhengrong Wang, Xiaoxu Lu, Liyun Zhong, Yongan Zhang, Canlin She, Zhaoyong Xu, Runhai Yang, Jinming Zhao, Peilin Li, Peizhong Hua, "Application of real-time holographic method to the microcrack nucleation process study", Proc. SPIE 4221, Optical Measurement and Nondestructive Testing: Techniques and Applications, (9 October 2000); doi: 10.1117/12.402649; https://doi.org/10.1117/12.402649
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KEYWORDS
Holography

Refractive index

Holographic interferometry

Ultrasonics

Experimental mechanics

Holography applications

Visualization

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