SYMPOSIA PAPER Published: 01 January 1983
STP37310S

Use of J-Integral Estimation Techniques to Determine Critical Fracture Toughness in Ductile Steels

Source

The use of J-integral estimation techniques is discussed with reference to the evaluation of fracture toughness values for ductile materials. Two applications are considered, tensile plates containing elliptical surface cracks and two specimens designed to produce Mode II sliding shear.

In all cases good agreement was obtained between critical fracture toughness values obtained using J-integral estimation techniques and those obtained in established specimen geometries or by using fractographic techniques. Caution is advised in ensuring that the specimen geometry utilized for J-integral analysis is sufficiently constrained to produce a crack-tip stress-strain field uniquely characterized by the J-integral.

Author Information

Green, G
Central Electricity Generating Board SW Region, Scientific Services Department, Bristol, U.K.
Miles, L
Central Electricity Generating Board SW Region, Scientific Services Department, Bristol, U.K.
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Details
Developed by Committee: E08
Pages: I-458–I-479
DOI: 10.1520/STP37310S
ISBN-EB: 978-0-8031-4869-7
ISBN-13: 978-0-8031-0727-4