, Volume 19, Issue 10, pp 349-361

Dynamic photoelastic studies of fracture

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Dynamic characterization of brittle fracture is possible by relating the instantaneous stress-intensity factorK(t) to the velocity of propagation of the crack. High-speed photographic systems are employed with photoelastic methods to obtain a sequence of isochromatic-fringe patterns representing the state of stress associated with the propagating crack. Methods for determiningK(t) from these isochromatic patterns are reviewed.

This Murray Lecture was presented at 1979 SESA Spring Meeting held in San Francisco, CA on May 20–25.