CAJ | 학술논문

对角焊缝检测提出了一种利用交流电磁场的无损检测新方法。首先简介了交流电磁场检测（ACFM）的基本原理，并基于ANSYS软件模拟出裂纹缺陷引起的磁场畸变信号。在确定交流电磁场检测系统的基础上，利用标准试板进行了测试分析，并将其成功应用于储油罐底板角焊缝的无损检测中，实现了裂纹缺陷的定性定量化评估。试验测试及应用结果均验证了该方法对表面或近表面裂纹缺陷检测的灵敏度高，为其他结构部位探伤也提供了借鉴。
대각한봉검측제출료일충이용교류전자장적무손검측신방법。수선간개료교류전자장검측（ACFM）적기본원리，병기우ANSYS연건모의출렬문결함인기적자장기변신호。재학정교류전자장검측계통적기출상，이용표준시판진행료측시분석，병장기성공응용우저유관저판각한봉적무손검측중，실현료렬문결함적정성정양화평고。시험측시급응용결과균험증료해방법대표면혹근표면렬문결함검측적령민도고，위기타결구부위탐상야제공료차감。
A new nondestructive testing method using alternating current field measurement has been pro-posed fillet welds.The detection principle of alternating current field measurement(ACFM)method is first introduced,and the abnormal magnetic signals induced by crack defects are simulated based on ANSYS software.On the basis of the ACFMdetection system,the ACFMsignal is tested and analyzed by virtue of the standard test plate,and the method is applied successfully to nondestructively inspect fillet welds of a storage tank,accomplishing the evaluation of crack defects qualitatively and quantitatively.The experi-mental test and application result have validated that the ACFM method has a high sensitivity to detect surface or subsurface cracks,providing a reference for other structural defect detection.