波导谐振环微带阵列多裂纹检测传感器设计  

Design of resonant ring microstrip array multi-crack detection sensor

作　　者：江正峰 高尚 江剑[1] Jiang Zhengfeng;Gao Shang;Jiang Jian(School of Mechanical Engineering,Nanjing University of Science and Technology,Nanjing 210094,China)

机构地区：[1]南京理工大学机械工程学院,南京210094

出　　处：《电子测量与仪器学报》2024年第1期1-8,共8页Journal of Electronic Measurement and Instrumentation

基　　金：国防重大项目基金(KR01042);中央高校基础研究基金(309181A8804,30919011263);江苏省自然科学基金(BK20190464)项目资助。

摘　　要：针对飞行器机翼的大面积壁板等金属结构的多形态裂纹分布难以同时检测、检测精度低等问题,设计了一种互补开口波导谐振环微带阵列多裂纹检测传感器。该传感器群阵列中不同尺寸的互补开口波导谐振环微带传感器能够检测直裂纹、针孔、星型3种裂纹的特征参数。实验结果表明,传感器对3种裂纹的参数变化的最大检测灵敏度达到了150 MHz/mm,传感器可检测出的最小直裂纹尺寸为10 mm×1 mm×0.1 mm。该传感器结合了互补开口谐振环辐射能力强、易于表面共形和基片集成波导低损耗、品质因数高、尺寸小的特性,能够实现对金属材料上多形态裂纹的同时检测,具有灵敏度高、检测范围大等优点。A sensor array for multi-crack detection,consisting of complementary open-ended waveguide resonator rings in a microstrip configuration,has been designed to address,the challenges of simultaneous detection and low detection accuracy in the multi-form crack distribution of large metal structures,such as aircraft wings.The sensor array comprises complementary open-ended waveguide resonator rings of different sizes,which can detect characteristic parameters of straight cracks,pinholes,and star-shaped cracks.Experimental results demonstrate that the maximum detection sensitivity of the sensor array to parameter variations in the three types of cracks reached 150 MHz/mm,and the smallest detectable size of a straight crack is 10 mm×1 mm×0.1 mm.This sensor combines the advantages of strong radiation capability of complementary open-ended resonator rings,ease of surface conformability and substrate-integrated waveguide with low loss,high quality factor,and small size.It enables simultaneous detection of multi-form cracks on metallic materials,and offers advantages such as high sensitivity and wide detection range.

关 键 词：金属裂纹 互补开口谐振环 有限元分析 谐振频率 基片集成波导 

分 类 号：TP212.9[自动化与计算机技术—检测技术与自动化装置]