A Basic Study on Fatigue Fracture Model at Elevated Temperatures by the Dimensional Analysis Method |
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| 차원해석법에 의한 고온피로 파괴 모델의 기초적 연구 |
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서창민,김영호,권오헌 |
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경북대학교 기계공학과,마산대학교 생산기계공학과,경북대학교 공대 |
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© 1992 The Korean Society of Ocean Engineers
Open access / Under a Creative Commons License
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| Keywords:
Dimensional Analysis, Arrhenius Type Equation, Activation Energy, Fracture Mechanics, Fatigue Crack Growth Rate, J-integral, Elevated Temperatures |
| 핵심용어:
차원해석, 아레니우스형의식, 활성화 에너지, 파괴역학, 피로균열 성장률, J적분, 고온 |
| Abstract |
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The main purpose of this study is to derive a law of fatigue crack growth rate in the region of elastic or elasto-plastic fracture mechanics at elevated temperatures through the application of dimensional analysis. An equation of elasto-plastic fatigue crack growth rate at elevated temperatures appeared a new Arrhenius type equation containing J-integral range and absolute temperature. The elastic or elasto-plastic crack growth rate equation shows a fairly good agreement with the experimental results for Cr-Mo-V rotor steel and Hastelloy-X alloy in the comparatively wide temperature ranges. |
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