Comparison of methods for fracture toughness determination in steels
- Atomic Energy of Canada, Ltd., Mississauga
This study compares various test methods and estimation procedures that are available for determining the fracture toughness of steels. The American Society for Testing and Materials 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 J/sub Ic/ determination are compared. Various formulations for plane-strain fracture toughness K/sub Ic/ and J/sub Ic/ 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.
- OSTI ID:
- 6821501
- Journal Information:
- J. Test. Eval.; (United States), Journal Name: J. Test. Eval.; (United States) Vol. 9:2; ISSN JTEVA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
360103* -- Metals & Alloys-- Mechanical Properties
ALLOYS
CHEMICAL ANALYSIS
COMPARATIVE EVALUATIONS
CRACKS
DATA
EQUATIONS
EXPERIMENTAL DATA
FRACTURE PROPERTIES
INFORMATION
IRON ALLOYS
IRON BASE ALLOYS
MATERIALS TESTING
MECHANICAL PROPERTIES
NUMERICAL DATA
QUANTITATIVE CHEMICAL ANALYSIS
STEELS
TESTING