TPWJ, 2010, #4, 14-21 pages
EVALUATION OF TEMPERATURE SHIFT DEPENDING UPON THE SPECIMEN THICKNESS BY THE FORCE AND DEFORMATION CRITERIA OF FRACTURE MECHANICS
Journal The Paton Welding Journal
Publisher International Association «Welding»
ISSN 0957-798X (print)
Issue № 4, 2010 (April)
E.O. Paton Electric Welding Institute, NASU, Kiev, Ukraine
Relationships between impact toughness KCV
and crack resistance characteristics of a material, derived by the E.O. Paton Electric Welding Institute, are applicable for a case where the plane-strain state forms within the defect zone. If this condition is violated, evaluation of crack resistance of structural members is not always optimal. To solve this problem, it is suggested that temperature shift in basic curves of fracture toughness characteristics should be evaluated depending upon the thickness of an object under investigation. It is shown that, in addition to thickness of a specimen, the temperature shift should also be evaluated by allowing for strength properties of a material and its welded joints.
impact toughness, Charpy specimen, crack resistance characteristics, plane strain, thickness effect, temperature shift, strain hardening of material
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