Journal
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
Volume 536, Issue -, Pages 249-255Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.msea.2012.01.007
Keywords
Equivalent material; V-notch; Ductile metallic material; Brittle fracture; Wad-bearing capacity; Tensile loading
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Ductile commercial steel was equated from the viewpoint of strain energy density with a virtual brittle material of the same elastic modulus by using a novel concept, called the equivalent material concept (EMC). By determining the ultimate tensile strength of the virtual material and also, by assuming that the values of the plane-strain fracture toughness for real and virtual materials are equal, the tensile load-bearing capacity of several V-notched samples of steel reported in literature was theoretically estimated by using the mean stress (MS) criterion as a well-known brittle fracture theory. It was found that the theoretical results of the MS-EMC criterion for the imaginary brittle specimens are in a very good consistency with the experimental results reported for real steel samples. (C) 2012 Elsevier B.V. All rights reserved.
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