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Proceedings Paper

Crack propagation imaging by the ISIS camera and a video trigger system
Author(s): Tomoo Okinaka; Pavel Karimov; Takeharu Etoh; Kenji Oguni
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Paper 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.

Paper Details

Date Published: 29 January 2007
PDF: 10 pages
Proc. SPIE 6491, Videometrics IX, 64910Y (29 January 2007);
Show Author Affiliations
Tomoo Okinaka, Kinki Univ. (Japan)
Pavel Karimov, Kinki Univ. (Japan)
Takeharu Etoh, Kinki Univ. (Japan)
Kenji Oguni, Univ. of Tokyo (Japan)

Published in SPIE Proceedings Vol. 6491:
Videometrics IX
J.-Angelo Beraldin; Fabio Remondino; Mark R. Shortis, Editor(s)

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