| 제목 |
유한평판 및 필렛 용접부에 있어서 표면균열의 피로 파괴거동에 관한 연구 |
| 분야 |
재료 및 RECYCLE |
| 언어 |
Korean |
| 저자 |
한문식(계명대학교) |
| Key Words |
Fatigue fracture(피로파괴), Fillet weldment(필렛 용접부), Undercut(언더컷), Multiple crack(복수균열), Beach mark method(비치마크법) |
| 초록 |
Fatigue crack growth from surface defects is one of the most important subjects for the evaluation and the assurance of safety in pressure vessels, piping systems, LPG/LNG fuel tank and other various structures. This paper attempts to analysis some practical or general problems such as the estimation of crack growth life to penetrate the plate thickness, based on fatigue crack growth a single surface flaw and the interaction of multiple flaws. An experiment on the coalescence of multiple undercuts was carried out under cyclic tension condition as a attempt to the analysis of multiple crack problems. It is noted that the fracture strength is characterized by the analogy to that in a single crack growth. |
| 원문(PDF) |
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