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자연과학
공학
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예술체육학
복합학
DBpia AI
AI 에이전트
AI 아이디어
AI 리더
AI 뷰어
Citeasy
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피인용 0
초록·키워드
Purpose: Corrosion on the outer wall of a pipe degrades its structural strength and consequently shortens its service life. This paper presents a procedure for assessing the remaining useful life (RUL) of underground pipelines with corrosion defects.
Methods: The probability of failure (POF) is estimated using Monte Carlo simulation (MCS) based on a structural reliability model. The time at which the POF reaches a specified threshold is identified, and a probability distribution of the remaining useful life is then derived. To account for time-varying corrosion growth behavior, a Poisson square wave process (PSWP) is employed.
Results: Experimental results indicate that pipe burst pressure approximately follows a normal distribution, and that the combined MCS–PSWP approach is effective for RUL prediction. The First Order Second Moment (FOSM) method yields relatively conservative predictions in comparison.
Conclusion: The proposed procedure provides a systematic basis for improving the risk assessment process of long-term corroded underground pipelines.
Methods: The probability of failure (POF) is estimated using Monte Carlo simulation (MCS) based on a structural reliability model. The time at which the POF reaches a specified threshold is identified, and a probability distribution of the remaining useful life is then derived. To account for time-varying corrosion growth behavior, a Poisson square wave process (PSWP) is employed.
Results: Experimental results indicate that pipe burst pressure approximately follows a normal distribution, and that the combined MCS–PSWP approach is effective for RUL prediction. The First Order Second Moment (FOSM) method yields relatively conservative predictions in comparison.
Conclusion: The proposed procedure provides a systematic basis for improving the risk assessment process of long-term corroded underground pipelines.
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