铆接结构缺陷检测中远场涡流传感器的优化设计

doi:10.3901/JME.2017.14.120

机械工程学报 ›› 2017, Vol. 53 ›› Issue (14): 120-127.doi: 10.3901/JME.2017.14.120

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铆接结构缺陷检测中远场涡流传感器的优化设计

胥俊敏¹, 杨宾峰¹, 王晓锋¹, 张辉²

1. 空军工程大学信息与导航学院西安 710077;
2. 空军工程大学科研部西安 710051

收稿日期:2016-10-24 修回日期:2017-02-12 出版日期:2017-07-20 发布日期:2017-07-20
通讯作者: 杨宾峰(通信作者),男,1976年出生,博士,副教授,硕士研究生导师。主要研究方向为电磁无损检测以及地磁导航技术。E-mail:bf_yang@163.com
作者简介:胥俊敏,男,1993年出生。主要研究方向为电磁无损检测。E-mail:zixu_sir@163.com
基金资助:
国家自然科学基金（51377172）和陕西省自然科学基础研究计划（2015JM5147）资助项目。

Optimal Design of Remote Field Eddy Current Sensor for Detection of Cracks in Riveted Structure

XU Junmin¹, YANG Binfeng¹, WANG Xiaofeng¹, ZHANG Hui²

1. Information and Navigation College, Air Force Engineering University, Xi'an 710077;
2. Department of Scientific Research, Air Force Engineering University, Xi'an 710051

Received:2016-10-24 Revised:2017-02-12 Online:2017-07-20 Published:2017-07-20

摘要/Abstract

摘要： 飞机机身多层铆接结构厚度较大，结构复杂，传统无损检测方法难以用于对其进行外场检测。远场涡流检测技术不受集肤效应的限制，可穿透较大厚度的被测试件，对铆接结构中缺陷的检测具有潜在优势。为在铆接结构中实现远场涡流效应，从信号增强与磁场抑制两方面入手，设计一种新型平板远场涡流传感器。信号增强方面，给激励线圈加装磁路来聚集和引导磁场，从而增强间接耦合磁场；磁场抑制方面，在激励线圈与检测线圈之间加装磁场抑制单元来抑制直接耦合磁场。通过信号增强与磁场抑制的共同作用，从而在铆接结中实现远场涡流效应。围绕传感器设计这个核心，对信号增强单元以及磁场抑制单元的尺寸形状、材料组成进行仿真研究，综合得出最优的传感器设计方案。仿真与试验的结果验证了将远场涡流检测技术应用于铆接结构中缺陷检测的可行性。

关键词: 磁场抑制, 铆接结构, 信号增强, 远场涡流

Abstract: Since the complexity and large thickness of the fuselage riveted structure, it is difficult to detect its cracks by traditional eddy current testing technology. Without the restriction of skin effect, remote field eddy current can penetrate specimen with large thickness, and has potential to detect cracks in riveted structure. In order to realize remote field eddy current effect in riveted structure, a new remote field eddy current sensor is designed from the aspects of signal enhancement and magnetic suppression. On one hand, magnetic circuit is added to the excitation coil for collection and guidance of excitation magnetic field, enhancing indirect coupling magnetic field; On the other hand, suppression unit is equipped between the excitation coil and the detection coil to restrain direct coupling magnetic field. Remote field eddy current effect is realized through the co-work of signal enhancement and magnetic suppression. Focusing on the design of sensor, many simulations have been carried out on the shape, size and material of the signal enhancement and magnetic suppression unit, and the optimal design is obtained. Simulation and experiments results verify the feasibility of the application of remote field eddy current testing technology in the location detection of cracks in riveted structure.

Key words: magnetic suppression, remote field eddy current, riveted structure, signal enhancement

中图分类号:

TG115

胥俊敏, 杨宾峰, 王晓锋, 张辉. 铆接结构缺陷检测中远场涡流传感器的优化设计[J]. 机械工程学报, 2017, 53(14): 120-127.

XU Junmin, YANG Binfeng, WANG Xiaofeng, ZHANG Hui. Optimal Design of Remote Field Eddy Current Sensor for Detection of Cracks in Riveted Structure[J]. Journal of Mechanical Engineering, 2017, 53(14): 120-127.

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铆接结构缺陷检测中远场涡流传感器的优化设计

Optimal Design of Remote Field Eddy Current Sensor for Detection of Cracks in Riveted Structure

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