Temperature Variation associated with Stable Crack Growth and the Fracture Toughness Value

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概要

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• The temperature of specimens during the fracture toughness testing, varies due to the heat generation associated with a plastic flow near the crack tip. The temperature has been analyzed using a simple heat balance model and the generated heat has been calculated. Heat generation rate changes in a clear slope corresponding to the stable crack initiation. Hence, this phenomenon can be used for detecting the stable crack initiation. J-integrals were estimated based on the heat variation for three kinds of steels and were found to be close to the ones evaluated by the R curve method.

• 一般社団法人日本機械学会の論文

著者

• Imai Yasufumi

  Faculty Of Engineering Nagasaki University

• MATAKE Tomokazu

  Faculty of Engineering, Nagasaki University

• Matake Tomokazu

  Faculty Of Engineering Nagasaki University

関連論文

• Fatigue Strength of Notched Specimen under Combined Stress
• Heat Generation Associated with Rotating Bending Fatigue of a Steel and Deduction of the Fatigue Notch Factor
• Temperature Variation associated with Stable Crack Growth and the Fracture Toughness Value
• Simulation of Crack Growth in Thermal Stress Cleaving Using Line Heat Source
• An Explanation on Fatigue Limit under Combined Stress

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