SYMPOSIA PAPER Published: 01 January 1984
STP32554S

Recent Advances in Crack-Arrest Technology

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Statistical analysis of the variability of crack-arrest toughness (Ka) is reviewed. The standard deviation of Ka is 12 MPa · m1/2 for an individual heat of low-alloy steel and 15 MPa · m1/2 when data for all heats are referred to the Charpy 41-J (30 ft-lb) temperature. These results aid in the definition of acceptable size limitations for crack-arrest test specimens. Miniature specimens (50 by 50 by 12.7 mm) are shown to give acceptably conservative results when tested in the vicinity of the reference transition temperature.

Author Information

Rosenfield, AR
Battelle-Columbus Laboratories, Columbus, Ohio
Mincer, PN
Battelle-Columbus Laboratories, Columbus, Ohio
Marschall, CW
Battelle-Columbus Laboratories, Columbus, Ohio
Markworth, AJ
Battelle-Columbus Laboratories, Columbus, Ohio
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Details
Developed by Committee: E08
Pages: 149–164
DOI: 10.1520/STP32554S
ISBN-EB: 978-0-8031-4900-7
ISBN-13: 978-0-8031-0208-8