Ductile crack growth and unstable fracture under constant load.
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概要
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Unstable ductile fracture under constant load was empirically investigated.It was confirmed that this behavior was caused by initiation and growth of the ductile crack under the load holding condition.When this fracture process was examined by means of J-integral resistance (J-R) curve, the ductile crack growth under constant load seemed to obey the J-R curve which was determined by conventional multiple-specimen method.If Jg is defined as minimum J value which causes the unstable ductile fracture under constant load, Jg exists between Ji (corresponding to the ductile crack initiation) and Jm (corresponding to maximum load point in displacement control test). The Jg might be one of the parameters to describe the unstable ductile fracture under the constant load condition.
- The Iron and Steel Institute of Japanの論文
The Iron and Steel Institute of Japan | 論文
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