COMPARISON OF VARIOUS METHODS OF MEASURING K1C ON SMALL PRECRACKED BEND SPECIMENS THAT FRACTURE AFTER GENERAL YIELD
作者： J.N. Robinson , A.S. Tetelman
DOI: 10.1016/0013-7944(76)90011-4
关键词: Yield (engineering) 、 Structural engineering 、 Materials science 、 Fracture (geology) 、 Bending 、 Cracking 、 Composite material 、 Fracture mechanics 、 Crack tip opening displacement 、 Plane stress 、 Fracture toughness
摘要: An experimental investigation into the measurement of fracture toughness on small precracked bend specimens after general yield is described. Six parameters are compared basis their accuracy and utility in predicting KIc. The are: (1) on-load crack tip opening displacement, COD, (2) lateral (notch root, tip) contraction, NRC, (3) angle bend, (4) stretch zone, (5) J integral, (6) equivalent energy. results show that, from standpoint ease measurement, plane strain COD at initiation, (COD)Ic, most useful parameter for measuring KIc that yield. (Author)
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