SYMPOSIA PAPER Published: 01 January 1980
STP27448S

Dynamic Photoelastic Determination of the Relation for 4340 Alloy Steel

Source

A method of direct determination of the instantaneous stress-intensity factor associated with running and arrested cracks in steels has been developed at the University of Maryland. Birefringent coatings have been applied to the proposed ASTM standard crack arrest compact specimens of oil-quenched and tempered 4340 steel. Isochromatic fringe patterns during crack propagation and crack arrest have been photographed successfully with an ultrahigh-speed Cordin camera and specially designed high-intensity and short-duration Xenon lamp system.

In this paper a detailed description of the experimental apparatus, the method of isochromatic fringe analysis technique, and an examination of behavior of the stress-intensity factor during crack propagation and after arrest are presented.

Author Information

Kobayashi, T
University of Maryland, College Park, Md.
Dally, JW
University of Rhode Island, Kingston, R.I.
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Details
Developed by Committee: E08
Pages: 189–210
DOI: 10.1520/STP27448S
ISBN-EB: 978-0-8031-4779-9
ISBN-13: 978-0-8031-0317-7