承压管道磁记忆检测缺陷信号量化数值研究  

Numerical study on quantification of defect signals in magnetic memory testing of pressure pipeline

作　　者：郭凯[1] 梁鸿 常金鹏 潘文杰 牟彦春 曹丽琴[1] 张红升 GUO Kai;LIANG Hong;CHANG Jinpeng;PAN Wenjie;MOU Yanchun;CAO Liqin;ZHANG Hongsheng(School of Environmental and Chemical Engineering,Yanshan University,Qinhuangdao 066004,China;Zhejiang Academy of Special Equipment Science,Hangzhou 310020,China)

机构地区：[1]燕山大学环境与化学工程学院,河北秦皇岛066004 [2]浙江省特种设备科学研究院,杭州310020

出　　处：《压力容器》2022年第1期79-86,共8页Pressure Vessel Technology

基　　金：浙江省市场监督管理局“雏鹰计划”培育项目(CY2022220)。

摘　　要：利用Ansys数值模拟软件,对含埋藏缺陷的承压管道进行磁记忆检测有限元模拟,分析磁记忆信号值在不同缺陷参数、不同应力状态下的变化规律。结果表明,磁记忆信号可以对管道埋藏型裂纹及气孔产生的应力集中进行表征,随着缺陷埋深的减小与内压载荷的增加,磁记忆信号变化幅度增大,法向梯度极值增加。通过法向和切向信号协同分析,可以实现对缺陷信号的量化。The finite element simulation of magnetic memory detection of pressure pipeline with buried defects was carried out using the Ansys numerical simulation software,and the variation law of magnetic memory signal value under different defect parameters and different stress states was analyzed.The results show that the magnetic memory signal can characterize the stress concentration caused by buried cracks and blowholes in the pipeline.With the decrease of defect buried depth and the increase of internal pressure load,the variation amplitude of magnetic memory signal increases and the extreme value of normal gradient increases.Through the synergic analysis of normal and tangential signals,the quantification of defect signals can be realized.

关 键 词：承压管道 埋藏缺陷 力磁耦合 磁记忆信号 

分 类 号：TH49[机械工程—机械制造及自动化] TG115.27[金属学及工艺—物理冶金]