SYMPOSIA PAPER Published: 01 January 1993
STP18021S

Constraint and Toughness Parameterized by

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A series of cracked specimen configurations have been tested to correlate the geometry dependence of crack tip constraint and fracture toughness in full plasticity. Specimens with through cracks included a range of edge-cracked bend bars, compact tension specimens, and center-cracked panels. Surface-cracked panels were tested in tension to produce resistance curves.

The geometry dependence of ductile crack extension in plane strain has been correlated with crack tip constraint as parameterized by the T stress, which indicates the nature of the development of higher order terms in the nonlinear asymptotic crack tip expansion.

Author Information

Hancock, JW
University of Glasgow, Glasgow, Scotland
Reuter, WG
EG & G, Idaho National Engineering Laboratory, Idaho Falls, Idaho
Parks, DM
Massachusetts Institute of Technology, Cambridge, MA
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Details
Developed by Committee: E08
Pages: 21–40
DOI: 10.1520/STP18021S
ISBN-EB: 978-0-8031-5229-8
ISBN-13: 978-0-8031-1481-4