1 September 1994 Simple calibration method for determining KI using the method of caustics
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Optical Engineering, 33(9), (1994). doi: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 KI at a crack tip. The accuracy is further improved by using white light. The effect of the pinhole size on the determination of KI is investigated. The accuracy of the proposed measurement location is demonstrated by comparing experimental results with theory.
Nashwan T. Younis, Ibrahim Miskioglu, Steven E. Egleston, "Simple calibration method for determining KI using the method of caustics," Optical Engineering 33(9), (1 September 1994). http://dx.doi.org/10.1117/12.177514
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KEYWORDS
Calibration

Light sources

Diffraction

Polymethylmethacrylate

Light

Laser optics

Laser sources

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