热力发电2024，Vol.53Issue(11)：155-161,7.DOI:10.19666/j.rlfd.202404085
20钢板焊缝缺陷的磁记忆检测
Magnetic memory detection in welding joint of 20 steel plate
摘要
Abstract
Compared with magnetic particle detection and ray detection,magnetic memory detection is more sensitive.The magnetic memory technology is employed to carry out nondestructive testing and evaluation for weld defects of 20 steel plate.The results show that,the magnetic memory detection method can effectively characterize the weld defects of steel plates.Compared with the magnetic field intensity parameter,the magnetic field gradient value is more sensitive to the weld defects of the four tested steel plates,which manifested as its normal component increases significantly and presents a convex peak,and the abnormal magnetic memory signals also appear in some places of the weld with local stress concentration.In practical application,the rapid characteristics of the magnetic memory detection technology can be used to extract the abnormal signals of the weld seam of the tested components at first,and then compare it with other non-destructive testing methods,to effectively improve the accuracy and reliability of defect detection.关键词
磁记忆检测/焊缝缺陷/裂纹/无损检测Key words
metal magnetic memory detection/weld defects/crack/nondestructive testing引用本文复制引用
谢云辰,纳日苏,王啸..20钢板焊缝缺陷的磁记忆检测[J].热力发电,2024,53(11):155-161,7.基金项目
国家能源集团科学技术研究院资助项目(GJ2022Y01) （GJ2022Y01）
国家自然科学基金青年基金项目(52305156) Project of National Energy Group Science and Technology Research Institute(GJ2022Y01) （52305156）
Youth Fund of National Natural Science Foundation(52305156) （52305156）
