Static and Dynamic Stress Intensity Factors by the Method of Transmitted Caustics

[+] Author and Article Information
F. Katsamanis, D. Raftopoulos

The National Technical University, Athens, Greece

P. S. Theocaris

Department of Theoretical and Applied Mechanics, The National Technical University, Athens, Greece

J. Eng. Mater. Technol 99(2), 105-109 (Apr 01, 1977) (5 pages) doi:10.1115/1.3443417 History: Received December 30, 1975; Revised September 08, 1976; Online August 17, 2010


The stress intensity factors in plexiglas plates containing an edge crack and subjected to static or dynamic loading are determined by the optical method of caustics. Measurements of the applied load were accomplished by means of a piezoelectric transducer and the caustics obtained in the experiments were photographed during the process of loading by using a Cranz-Schardin high speed camera. It has been found that the stress intensity factors for a dynamic loading are always higher than the corresponding stress intensity factors for a static loading of the same magnitude.

Copyright © 1977 by ASME
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