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볼트 체결길이 미흡에 따른 배관 플랜지의 구조 신뢰성 평가
박치용(Chi-Yong Park),신인환(In-Whan Shin),김만원(Maan-Won Kim) 대한기계학회 2021 대한기계학회 춘추학술대회 Vol.2021 No.11
The flange connecting method is widely used in the industrial field because of using the advantages of simple installation and maintenance. The connection between flanges is fixed with bolts. If the length of the bolts in the connection part is not sufficient, a bolt has to be replaced with a new bolt. When the pipe is operating in fluid system, it may be necessary to evaluate the soundness of the flange connection for the insufficient bolt length. And then, based on the evaluation results, a faulted bolt has to be selected one of them such as immediate replacement, replacement after one cycle or continue to use. In this paper, the structural reliability for pipe flange fastening was evaluated when the bolt fastening length was in sufficient. The structural reliability was checked whether the maximum applied stress on the bolt thread surface was within the allowable stress range of the ASME code.