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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); doi: 10.1117/12.703310
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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