A Theoretical Study of the Application of the Optical Caustics to High-Temperature Creep Fracture Mechanics

[+] Author and Article Information
J. L. Ding, Y. G. Chen

Department of Mechanical and Materials Engineering, Washington State University, Pullman, WA 99164-2920

J. Appl. Mech 61(4), 923-929 (Dec 01, 1994) (7 pages) doi:10.1115/1.2901580 History: Accepted September 28, 1992; Received September 28, 1992; Online March 31, 2008


In the current study, a theoretical basis is established for interpreting and correlating the optical caustic patterns with the transition of the crack-tip stress and strain fields under high-temperature creep condition. The theory forms a foundation for a possible experimental method based on optical caustics for characterizing the time-dependent fracture at elevated temperatures. Some numerical simulations of the high-temperature caustic phenomena were also performed based on the proposed theory.

Copyright © 1994 by The American Society of Mechanical Engineers
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