Purpose

This study aims to provide a theoretical basis to evaluate the suitability and integrity of corrosion pipes.

Design/methodology/approach

The three-dimensional models of the P110S oil pipe with local corrosion damage, general corrosion damage, pitting corrosion damage are established based on the API 579 standard using the nonlinear finite element analysis method for parametric research.

Findings

The reliability of the model is verified based on the experimental data from the existing literature. The effects of the oil pipe’s size and the corrosion damage’s type on the residual internal pressure strength are simulated and obtained. What’s more, a basic method for predicting the remaining life of corrosion damaged pipes is proposed.

Originality/value

The authors evaluated the residual strength of various corroded tubing, compared the tubing with different corrosion types and proposed a basic method for predicting the remaining life of the corroded tubing from the corrosion depth.

中文翻译：

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腐蚀油管残余内压强度有限元研究及剩余寿命预测方法

目的

本研究旨在为评价腐蚀管道的适用性和完整性提供理论依据。

设计/方法/方法

基于API 579标准，采用非线性有限元分析方法进行参数化研究，建立P110S油管局部腐蚀损伤、全面腐蚀损伤、点蚀损伤三维模型。

发现

基于已有文献的实验数据验证了模型的可靠性。模拟得到了油管尺寸和腐蚀损伤类型对残余内压强度的影响。此外，还提出了一种预测腐蚀损坏管道剩余寿命的基本方法。

原创性/价值

作者评估了各种腐蚀油管的残余强度，比较了不同腐蚀类型的油管，并提出了从腐蚀深度预测腐蚀油管剩余寿命的基本方法。