Lift-off suppression algorithm for dual-frequency alternating current field measurement
摘 要
航空装备结构表面多为铆钉连接件,其在检测过程中容易产生提离扰动,造成缺陷的漏检或误判。基于交流电磁场检测原理,引入双频激励技术,设计开发了一套集检测探头-双频激励-检测机箱为一体的结构缺陷双频交流电磁场检测系统,研究了提离抖动条件下干扰信号的畸变机理,提出了基于双频响应信号的交流电磁场提离抖动抑制算法,开展了提离抖动抑制试验。结果表明,双频交流电磁场提离抑制算法可有效去除由提离扰动引起的干扰信号,增强了判断缺陷信号的准确率。
Abstract
Since the surface of the aviation equipment structure is mostly rivet connectors, it is easy to produce lift-off disturbances during the inspection process, resulting in missing detection or misjudgment of defects. Based on the alternating current field measurement, this paper introduced dual-frequency excitation technology, designed and developed a set of integrated the dual-frequency ACFM detection system for structural defects which integrates detection probe, dual-frequency excitation and detection chassis, studied the mechanism of interference signal distortion under lift-off jitter conditions, and proposed an ACFM lift-off jitter suppression algorithm based on dual-frequency response signals, and carried out lift-off jitter suppression experiment, the experimental results show that the dual-frequency ACFM lift-off suppression algorithm can effectively remove the interference signal caused by the lift-off disturbance, and enhance the accuracy of the defect signal judgment.
中图分类号 TG115.28 DOI 10.11973/wsjc202104002
所属栏目 2020远东无损检测新技术论坛论文精选
基金项目 国家自然科学基金资助项目(52005512);博士后创新人才支持计划(BX20190386);中国博士后科学基金面上资助项目(2019M662461)
收稿日期 2020/11/20
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联系人作者李伟(liwei@upc.edu.cn)
备注赵建超(1998-),男,硕士,主要从事电磁无损检测技术研究工作
引用该论文: ZHAO Jianchao,LI Wei,YUAN Xin,ZHAO Jianming,JIANG Weiyu,SHANG Yaqi,SHAO Xinyu,LIU Jie. Lift-off suppression algorithm for dual-frequency alternating current field measurement[J]. Nondestructive Testing, 2021, 43(4): 5~9
赵建超,李伟,袁新安,赵建明,蒋维宇,尚亚期,邵鑫宇,刘杰. 双频交流电磁场提离抑制算法[J]. 无损检测, 2021, 43(4): 5~9
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参考文献
【1】陈晨, 孙宏达,文青山,等.蒸压釜釜齿裂纹的ACFM检测系统设计与试验研究[J].压力容器,2020,37(10):23-28,51.
【2】李伟. 基于交流电磁场的缺陷智能可视化检测技术研究[D].北京:中国石油大学,2007.
【3】李伟, 赵建明,葛玖浩,等.不锈钢管道均匀电磁场内检测探头设计和试验研究[J].中国石油大学学报(自然科学版),2019,43(6):123-129.
【2】李伟. 基于交流电磁场的缺陷智能可视化检测技术研究[D].北京:中国石油大学,2007.
【3】李伟, 赵建明,葛玖浩,等.不锈钢管道均匀电磁场内检测探头设计和试验研究[J].中国石油大学学报(自然科学版),2019,43(6):123-129.
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