作者:蒋诗超1, 秦俊生2, 卢新亮1, 潘峥1, 郭涛1
作者单位:1. 国营芜湖机械厂,安徽 芜湖 241000;
2. 芜湖军事代表室,安徽 芜湖 241000
关键词:远场涡流探头;有限元;幅值;相位;裂纹
摘要:
由于飞机多层金属板结构厚度大、复杂等特性,现有检测方法无法发现原位内部缺陷,对于多层板金属缺陷的检测一直都是航空无损检测的难题。远场涡流检测技术因打破趋肤效应的限制,涡流能量可穿透较厚的被测试件,对金属板结构中隐藏缺陷的检测具有潜在优势。该文针对飞机多层金属板隐藏裂纹的原位检测,建立多层金属板构件隐藏裂纹平面远场涡流检测有限元仿真模型,研究不同角度、不同深度裂纹检测幅值、相位的变化规律。为验证该仿真模型的正确性,开展远场涡流检测多层金属板的试验。试验结果表明:设计开发的远场涡流探头可检测埋深13 mm的裂纹缺陷,当裂纹倾斜角度为0°时,检测灵敏度最高,当裂纹倾斜角度为90°时,检测灵敏度最低,与仿真结果保持一致,且能够对缺陷进行精准定位,可为飞机多层金属板构件隐藏裂纹的定量检测提供依据。
Design and research of remote field eddy current probe based on defect detection of plane multilayer metal plates
JIANG Shichao1, QIN Junsheng2, LU Xinliang1, PAN Zheng1, GUO Tao1
1. State-owned Wuhu Machinery Factory, Wuhu 241000, China;
2. Wuhu Military Representative Office, Wuhu 241000, China
Abstract: The plane multilayer metal plate structure has larger thickness and complex structure.Conventional non-destructive testing methods are difficult to detect effectively in situ. However, the existing detection methods cannot find in-situ internal defects, and the detection of metal defects of multilayer boards has always been a problem of aviation non-destructive testing. Far-field eddy current testing technology breaks the limitation of skin effect, and eddy current energy can penetrate the thicker test piece, which has potential advantages for detecting hidden defects in the metal plate structure. In this paper, the in-situ detection of hidden cracks in aircraft multi-layer metal sheets is established. The finite element model of multi-plane metal plate member hidden defect plane far-field eddy current testing is established. The variation of detection amplitude and phase amplitude of cracks with different angles and depths is studied. In order to verify the correctness of the simulation model, an experiment of far-field eddy current testing multilayer metal plates was carried out. The experimental results show that the remote eddy current probe design can be used to detect the defects of 13 mm depth of the crack. The crack sensitivity of the detection angle of 0° is highest, the crack sensitivity of the detection angle of 90° is lowest. Consistent with simulation results, it takes effective measure to locate the defects accurately, and provides a basis for the quantitative detection of hidden cracks in aircraft multilayer metal plate components.
Keywords: far field eddy current probe;finite element;amplitude;phase;crack
2021, 47(4):118-123 收稿日期: 2020-08-27;收到修改稿日期: 2020-11-03
基金项目:
作者简介:
参考文献
[1] 田冬凤. 飞机机身铆接构件疲劳性能研究[D]. 南京: 南京航空航天大学, 2013.
[2] 张阿龙. 大型飞机机身环形对接区高效精确制孔技术[D]. 杭州: 浙江大学, 2016.
[3] 许洋, 任尚坤, 张文君, 等. 基于磁导率方法的钢板裂纹检测[J]. 中国测试, 2020, 46(1): 34-38,70
[4] 徐煦源, 涂君, 张旭, 等. 用于钢板厚度测量的常用电磁超声线圈特性研究[J]. 中国测试, 2020, 46(4): 143-147
[5] SUN Y S, DENNIS R, ZHU H. New advances in detecting cracks in raised-head fasteners holes using rotational remote field eddy current technique[C]//ASNT Fall Coference, 2005: 17-21.
[6] 李小丽, 陈新波, 时建云, 等. 飞机多层结构内层腐蚀损伤的远场涡流检测与评估[J]. 无损检测, 2020, 42(7): 35-40
[7] 赵本勇, 宋凯, 宁宁, 等. 飞机铆接件隐藏缺陷的远场涡流检测探头优化与试验[J]. 航空学报, 2020, 41(1): 271-281
[8] 杨昌荣. 基于多层电磁屏蔽的远场涡流检测技术研究[D]. 成都: 电子科技大学, 2020.
[9] 徐小杰, 罗飞路, 刘春艳, 等. 远场涡流传感器与信号调理电路优化设计及其应用[J]. 仪表技术与传感器, 2006(6): 3-5
[10] 徐小杰, 罗飞路, 刘春艳, 等. 铁磁性管道的远场涡流检测系统的设计与实现[J]. 计量技术, 2006(12): 7-10
[11] 徐小杰, 罗飞路, 潘孟春. 远场涡流检测中的缺陷快速重构技术[J]. 中国电机工程学报, 2007, 27(21): 101-105
[12] 吴德会, 黄松岭, 赵伟, 等. 管道裂纹远场涡流检测的三维仿真研究[J]. 系统仿真学报, 2009, 21(20): 6626-6629
[13] 刘平政, 宋凯, 宁宁, 等. 飞机紧固件孔周裂纹检测远场涡流传感器设计及优化[J]. 仪器仪表学报, 2019, 40(6): 1-8