Journal Published Online: 01 March 1981
Volume 9, Issue 2

Comparison of Methods for Fracture Toughness Determination in Steels

CODEN: JTEVAB

Abstract

This study compares various test methods and estimation procedures that are available for determining the fracture toughness of steels. The ASTM Test for Plane-Strain Fracture Toughness of Metallic Materials (E 399), the energy rate test, and the multiple identical specimen crack growth resistance R curve test for elastic-plastic fracture toughness JIc determination are compared. Various formulations for plane-strain fracture toughness KIc and JIc estimation are also compared. Comparison of the test methods indicates that, for ductile steels, the multiple identical specimen R curve test is the most promising. It is suggested that the total areas be used for calculation of J from Rice's approximate formulation for three-point bend specimens of ductile steels and crack-contributed areas for brittle steel three-point bend specimens.

Author Information

Cobanoglu, MM
Atomic Energy of Canada, Ltd., Engineering Co., Reactor Development Branch, Sheridan Park Research Community, Mississauga, Ontario, Canada
Kardos, G
Carleton University, Ottawa, Ontario, Canada
Pages: 7
Price: $25.00
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Stock #: JTE11649J
ISSN: 0090-3973
DOI: 10.1520/JTE11649J