传感技术学报2024，Vol.37Issue(6)：974-979,6.DOI:10.3969/j.issn.1004-1699.2024.06.006
可区分应力集中和缺陷的双线圈共磁芯式梯度测磁传感装置设计
Design of a Double-Coil Common Core Gradient Magnetic Sensing Device that can Distinguish Stress Concentration from Defects
摘要
Abstract
Targeting at the engineering problem that the fusion welding joints in special positions of complex components cannot be fully covered in non-destructive testing,based on magnetic detection technology,a double-coil common core gradient magnetic sensing device is designed.The test block of fusion welding processed by the S06 martensitic stainless steel is taken as the experimental object.The device parameters are determined by comparing the magnetic signal detection results at the weld defects and stress concentration under different lifting heights,and by testing the performance of sensing device.The results show that the magnetic induction intensity decrea-ses with the increase of the lifting heights at both the stress concentration and the defects,and at a certain lifting height,the magnetic anomaly characteristics of the defects disappear,while the magnetic anomaly signal still exists at the stress concentration,so the stress concentration and the defect signals can be distinguished according to the phenomenon.The feasibility and effectiveness of the double-coil common core gradient magnetic sensing device in testing of weld defects are verified by the X-ray test results.The same test method can be used to calibrate the device parameters for fusible welded joints with similar material magnetism and welding process,so as to ex-pand the applicability of the designed device.关键词
磁传感装置/缺陷识别/磁检测技术/应力集中Key words
magnetic sensing device/defects identification/magnetic detection technology/stress concentration分类
信息技术与安全科学引用本文复制引用
王永红,赵本勇,王少飞,姜向东,胡博..可区分应力集中和缺陷的双线圈共磁芯式梯度测磁传感装置设计[J].传感技术学报,2024,37(6):974-979,6.基金项目
国家自然科学基金项目(51967014) （51967014）
江西省主要学科学术和技术带头人培养计划——青年人才项目(20204BCJ23001) （20204BCJ23001）
