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장윤석(Yoon-Suk Chang),윤강옥(Kang-Ok Yun),박영재(Young-Jae Park),김영진(Young-Jin Kim) 대한기계학회 2004 대한기계학회 춘추학술대회 Vol.2004 No.8
The deterministic evaluation methods could not predict exactly the real material behaviors due to the uncertainties. Recently, worldwide researches for economic operation and safe maintenance of nuclear power plant are being carried out based on risk and failure probability. However, unfortunately, few efficient tools to predict the failure probability of wall-thinned piping have been developed from the researches at this time. So, to settle the wall-thinned piping problem, it is necessary to develop the enhanced deterministic evaluation method and to put the probabilistic evaluation method on a firm footing based on the deterministic one. This paper describes enhanced deterministic evaluation method based on a series of finite element analyses, and development of the probabilistic evaluation program based on FORM and Monte Carlo simulation, and calculate failure probability of wall-thinned piping.
박영재(Young-Jae Park),윤강옥(Kang-Ok Yun),장윤석(Yoon-Suk Chang),김영진(Young-Jin Kim),조경식(Kyung-Shik Cho) 대한기계학회 2004 대한기계학회 춘추학술대회 Vol.2004 No.11
An effective integrity evaluation system is essential to manage the fitness for service issues on infra-structure because the evaluation processes usually take long times and are detrimental for productivity point of view. In this paper, the key structures and procedures of four integrity evaluation programs which have been developed based on currently available codes and standards are described. The proposed programs are not only flexible to adopt advances in fitness for purpose type assessment methodologies but also convenient for field engineers. The developed programs which will be unified as an integrity evaluation system are expected to play a prominent role for integrity evaluation of major infra-structure.