Crack propagation imaging by the ISIS camera and a video trigger system

Tomoo Okinaka; Pavel Karimov; Takeharu Etoh; Kenji Oguni

doi:10.1117/12.703310

29 January 2007 Crack propagation imaging by the ISIS camera and a video trigger system

Tomoo Okinaka, Pavel Karimov, Takeharu Etoh, Kenji Oguni

Proceedings Volume 6491, Videometrics IX; 64910Y (2007) https://doi.org/10.1117/12.703310
Event: Electronic Imaging 2007, 2007, San Jose, CA, United States

Abstract

An ultra-high speed camera of 1Mfps was applied to visualize the crack propagation. Change of stress field around the propagating crack tip was captured as a change of the fringe pattern by means of the photo-elastic imaging technique. Newly developed video trigger system is employed to detect the occurrence of the crack propagation as a trigger in the experiment. The trigger successfully perceived the initiation of the crack propagation stably. Also its response time was fast enough even for the image capturing with 1Mfps. As a result, it is revealed that the elastic wave, propagating in the continuous body, has a significant effect on the velocity and kinking behavior of the propagating crack.

Citation Download Citation

Tomoo Okinaka, Pavel Karimov, Takeharu Etoh, and Kenji Oguni "Crack propagation imaging by the ISIS camera and a video trigger system", Proc. SPIE 6491, Videometrics IX, 64910Y (29 January 2007); https://doi.org/10.1117/12.703310

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