基于ACFM的Q235钢表面裂纹检测与特征重构研究  

Research on surface crack detection and feature reconstruction of Q235 steelbased on ACFM technique

作　　者：雷丹 高辉[1] 李勇 周灿丰[1] LEI Dan;GAO Hui;LI Yong;ZHOU Canfeng(Engineering Research Center for Advanced Energy Connection Technology in Beijing University,Beijing Institute of petrochemical technology,Beijing 102617,China)

机构地区：[1]北京石油化工学院能源先进连接技术北京高校工程研究中心,北京102617

出　　处：《兵器材料科学与工程》2024年第2期101-107,共7页Ordnance Material Science and Engineering

基　　金：北京市属高校分类发展项目(11000023T000002199202)。

摘　　要：为保障管线安全,研究Q235钢常规裂纹特征,针对裂纹量化和重构精度不高等问题,探究Q235钢常规裂纹的特征重构方法。建立ACFM有限元仿真模型,通过仿真分析常规裂纹的长度和深度特征量的分布规律。结果表明:用三点插值法可确定波峰及波谷的相对位置,通过自适应拟合算法建立了裂纹长度和深度的重构方程;最后试验验证长度特征检测误差为5.98%,深度特征检测误差为3.86%。In order to ensure pipeline safety,the characteristics of conventional cracks in Q235 steel were studied.Aiming at the problem of low crack quantification and reconstruction accuracy,the characteristic reconstruction method of conventional cracks in Q235 steel was explored.Firstly,ACFM finite element simulation model was established to analyze the distribution law of the length and depth characteristic quantities of conventional cracks.The results show that the relative position of wave crest and trough can be determined by three-point interpolation method,and the reconstruction equations of crack length and depth are established by adaptive fitting algorithm.The test results show that the length feature detection error is 5.98%.The error of depth feature detection is 3.86%.

关 键 词：Q235钢 ACFM技术 有限元仿真 特征重构 

分 类 号：TP277[自动化与计算机技术—检测技术与自动化装置]