TY - JOUR
T1 - A Study on Experimental Evaluation of CED in an Arbitrary Direction Based on Load-Displacement Curves
AU - Utsunomiya, Takao
AU - Watanabe, Katsuhiko
PY - 1992
Y1 - 1992
N2 - The CED (crack energy density) in an arbitrary direction, εφ, is expected to be a parameter to describe not only elastic fracture but also elastic-plastic fracture of a mixed mode crack. This εφ is related to load-displacement curves of specimens and it was shown in the elastic region that εφ can be evaluated from experimentally obtained load - displacement curves with practically sufficient accuracy based on the relation. In this paper, the applicability of the method to elastic-plastic fracture problems is examined. That is, the load-displacement curves of specimens with a notch (or crack) inclined to the loading axis are obtained by experiments in the elastic-plastic region, and εφ is evaluated from those curves. The results are compared with those of finite element analyses, and the availability of evaluation method based on experimentally obtained load-displacement curves is demonstrated. Moreover, the method is applied to a fracture problem and it is shown that the method can be a powerful tool to evaluate the critical value of εφ (fracture toughness).
AB - The CED (crack energy density) in an arbitrary direction, εφ, is expected to be a parameter to describe not only elastic fracture but also elastic-plastic fracture of a mixed mode crack. This εφ is related to load-displacement curves of specimens and it was shown in the elastic region that εφ can be evaluated from experimentally obtained load - displacement curves with practically sufficient accuracy based on the relation. In this paper, the applicability of the method to elastic-plastic fracture problems is examined. That is, the load-displacement curves of specimens with a notch (or crack) inclined to the loading axis are obtained by experiments in the elastic-plastic region, and εφ is evaluated from those curves. The results are compared with those of finite element analyses, and the availability of evaluation method based on experimentally obtained load-displacement curves is demonstrated. Moreover, the method is applied to a fracture problem and it is shown that the method can be a powerful tool to evaluate the critical value of εφ (fracture toughness).
KW - CED
KW - Fracture Criterion
KW - Fracture Mechanics
KW - Fracture Toughness
KW - Load-Displacement Curve
KW - Mixed-Mode Crack
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U2 - 10.1299/kikaia.58.99
DO - 10.1299/kikaia.58.99
M3 - Article
AN - SCOPUS:84998225277
VL - 58
SP - 99
EP - 105
JO - Nihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A
JF - Nihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A
SN - 0387-5008
IS - 545
ER -