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基于磁通量泄漏信号修正巴斯昆参数的API X65钢级管道疲劳寿命评估

Fatigue Life Assessment of API Steel Grade X65 Pipeline Using a Modified Basquin Parameter of the Magnetic Flux Leakage Signal.

作者信息

Firdaus Syed Muhamad, Arifin Azli, Abdullah Shahrum, Singh Salvinder Singh Karam, Nor Noorsuhada Md

机构信息

Department of Mechanical and Manufacturing Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, UKM, Bangi 43600, Selangor, Malaysia.

School of Civil Engineering, College of Engineering, Universiti Teknologi MARA, Cawangan Pulau Pinang, Permatang Pauh 13500, Pulau Pinang, Malaysia.

出版信息

Materials (Basel). 2023 Jan 4;16(2):464. doi: 10.3390/ma16020464.

DOI:10.3390/ma16020464
PMID:36676201
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9863939/
Abstract

This paper presents a modified fatigue life model of the Basquin equation using the stress parameter of the magnetic flux leakage signal. Most pipeline steels experience cyclic loading during service and the influence of the load history makes assessing fatigue behaviour more difficult. The magnetic flux leakage signal's response to a uniaxial cyclic test of API X65 steel was measured with eight levels of ultimate tensile stress loads. The influence of dH(y)/dx on fatigue failure was the main concern in this study, the aim being to represent localised stress parameters in the modified Basquin equation. Both fatigue lives, experimental and predicted from the modified Basquin equation, were validated through reliability analysis, producing a 60% value when approaching 1.8 × 10 cycles. The fatigue data from the experiment produced a higher mean-cycle-to-failure value than the prediction data, with slightly different values of 3.37 × 10 and 3.28 × 10. Additionally, the modified Basquin equation's predicted and the experimental fatigue lives were found to have a high correlation value of 0.9022. The Pearson correlation also showed a good relationship between the fatigue lives, with an value of 0.9801. Finally, the modified Basquin equation based on dH(y)/dx signals provided an accurate and alternative method for durability assessment.

摘要

本文提出了一种利用漏磁信号应力参数修正的Basquin方程疲劳寿命模型。大多数管道钢在服役期间会经历循环载荷，而载荷历史的影响使得评估疲劳行为更加困难。采用八级极限拉伸应力载荷测量了API X65钢单轴循环试验中漏磁信号的响应。本研究主要关注dH(y)/dx对疲劳失效的影响，目的是在修正的Basquin方程中表示局部应力参数。通过可靠性分析验证了修正的Basquin方程预测的疲劳寿命和实验得到的疲劳寿命，在接近1.8×10次循环时，得到的值为60%。实验得到的疲劳数据的平均失效循环数高于预测数据，分别为3.37×10和3.28×10，略有不同。此外，修正的Basquin方程预测的疲劳寿命与实验疲劳寿命的相关值较高，为0.9022。皮尔逊相关性也表明疲劳寿命之间具有良好的关系，值为0.9801。最后，基于dH(y)/dx信号的修正Basquin方程为耐久性评估提供了一种准确的替代方法。

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