Simple calibration method for determining KI using the method of caustics

Nashwan T. Younis; Ibrahim Miskioglu; Steven E. Egleston

doi:10.1117/12.177514

1 September 1994 Simple calibration method for determining K_I using the method of caustics

Nashwan T. Younis, Ibrahim Miskioglu, Steven E. Egleston

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Optical Engineering, Vol. 33, Issue 9, (September 1994). https://doi.org/10.1117/12.177514

Abstract

The uncertainty in selecting the length parameter (the maximum diameter) of a caustic image is investigated. A simple calibration method is used to determine the mode-I stress intensity factor K_I at a crack tip. The accuracy is further improved by using white light. The effect of the pinhole size on the determination of K_I is investigated. The accuracy of the proposed measurement location is demonstrated by comparing experimental results with theory.

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Nashwan T. Younis, Ibrahim Miskioglu, and Steven E. Egleston "Simple calibration method for determining K_I using the method of caustics," Optical Engineering 33(9), (1 September 1994). https://doi.org/10.1117/12.177514

Published: 1 September 1994

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