Journal Published Online: 01 December 2005
Volume 34, Issue 2

On Measuring Mixed Mode I/III Fracture Toughness of Ductile Materials Using the Critical Stretch Zone Width



Mixed mode fracture I/III toughness determination for ductile materials currently uses an empirical equation for the blunting line. A modification based on the use of experimental measurements of the critical stretch zone width (SZWc) for the blunting line is suggested. A further modification, also based on SZWc measurements, that gives a notch root independent mixed mode I/III fracture toughness from a single specimen is described. Mixed mode fracture toughness tests on Armco iron, CP titanium, mild steel, and nickel have been carried out to evaluate these methods.

Author Information

Kamat, SV
Defence Metallurgical Research Laboratory, Kanchanbagh, Hyderabad, India
Srinivas, M
Defence Metallurgical Research Laboratory, Kanchanbagh, Hyderabad, India
Rama Rao, P
International Advanced Research Centre for Powder Metallurgy and New Materials (ARCI), Balapur, Hyderabad, India
Pages: 10
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Stock #: JTE12586
ISSN: 0090-3973
DOI: 10.1520/JTE12586