[1] Wang Yifei, Su Chun, Xie Mingjiang, et al. Evaluation of remaining useful life for corroded pipelinewith finite element simulation and reliability theory [J]. Journal of Southeast University (English Edition), 2022, 38 (1): 70-76. [doi:10.3969/j.issn.1003-7985.2022.01.011]

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Evaluation of remaining useful life for corroded pipelinewith finite element simulation and reliability theory()

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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:

38

Issue:

2022 1

Page:

70-76

Research Field:

Mechanical Engineering

Publishing date:

2022-03-20

Info

Title:

Evaluation of remaining useful life for corroded pipelinewith finite element simulation and reliability theory

Author(s):

Wang Yifei¹;  Su Chun¹;  2;  Xie Mingjiang¹

¹School of Mechanical Engineering, Southeast University, Nanjing 211189, China
²Hunan Provincial Key Lab of Health Maintenance for Mechanical Equipment, Hunan University of Science and Technology, Xiangtan 411201, China

Keywords:

pipeline;  burst pressure;  finite element method;  remaining useful life;  Monte Carlo simulation

PACS:

TH17

DOI:

10.3969/j.issn.1003-7985.2022.01.011

Abstract:

An integrated approach was proposed to evaluate the remaining useful life(RUL)of corroded petroleum pipelines. Two types of failure modes(i.e., leakage and burst failure)were considered, and the corresponding limit state functions(LSFs)were established with the structural reliability theory. A power-law function was applied to model the growth of corrosion defects, and the effect of external environmental factors on the growth of the pipeline’s defect was considered. Moreover, the result was compared with the commonly used linear growth model. After that, a finite element simulation model was established to calculate the burst pressure of the pipeline with corrosion defects, and its accuracy was verified through hydraulic burst test and by comparison with international criteria. On that basis, the probability that the pipeline may fail was calculated with Monte Carlo simulation(MCS)and by considering the LSFs, and the pipeline’s RUL was obtained accordingly. Furthermore, sensitivity analysis was conducted to determine the sensitivity parameters for the corrosion and RUL of the pipeline. The results indicate that the radial corrosion rate, wall thickness and working pressure have a great influence on the failure probability of the pipeline. Thus, corresponding measures should be adopted during the operation process of the pipeline to reduce the corrosion rate and increase the wall thickness, so as to prolong the pipeline’s RUL.

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Memo

Memo:

Biographies: Wang Yifei(1993—), male, Ph.D. candidate;Su Chun(corresponding author), male, doctor, professor, suchun@seu.edu.cn.
Foundation items: The National Natural Science Foundation of China(No.71671035, 72001039), the Open Fund of Hunan Provincial Key Laboratory of Health Maintenance for Mechanical Equipment(No.201901), the Open Fund of Jiangsu Wind Power Engineering Technology Center(No.ZK19-03-03).
Citation: Wang Yifei, Su Chun, Xie Mingjiang. Evaluation of remaining useful life for corroded pipeline with finite element simulation and reliability theory[J].Journal of Southeast University(English Edition), 2022, 38(1):70-76.DOI:10.3969/j.issn.1003-7985.2022.01.011.

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