传感技术学报2024，Vol.37Issue(9)：1491-1497,7.DOI:10.3969/j.issn.1004-1699.2024.09.004
基于微波平面传感器的碳纤维复合材料表面薄涂层厚度测量方法
Thickness Measurement for the Surface Thin Coatings of Carbon Fiber Composites Using a Microwave Planar Sensor
摘要
Abstract
Carbon fiber-reinforced composites(CFRP)have been widely used in aerospace manufacturing.The coating thickness of CFRP direct affects the component performance.So,accurate measurement of coating thickness is essential.A scheme for measuring the surface coating thickness of CFRP is proposed,which uses a microstrip line planar resonator based on material perturbation.This sensor has the advantages of small size and low cost.In electromagnetic simulations,the resonance frequency increases with increasing coating thickness.In experiments,thin films are placed on the surface of CFRP to simulate the coating.The experimental results are consistent with that in simulations and the relationship between the resonance frequency offset and the thickness can be well characterized by a quadratic polyno-mial.The thickness of the overburden layer is predicted by the fitted curve obtained from the experiment,with an error within±3%.Also,the prediction for thick coating is accurate,which shows that the proposed sensor has wide applicability in thickness measurement.关键词
平面谐振器/材料微扰/碳纤维复合材料/涂层厚度测量/谐振频率Key words
planar resonator/material perturbation/carbon fiber-reinforced composites/coating thickness measurement/resonance fre-quency分类
航空航天引用本文复制引用
金淇,李真..基于微波平面传感器的碳纤维复合材料表面薄涂层厚度测量方法[J].传感技术学报,2024,37(9):1491-1497,7.基金项目
国家自然科学基金项目(52105552) （52105552）
江苏省自然科学基金项目(BK20200427) （BK20200427）
江苏省研究生科研与实践创新计划项目(SJCX23_0099) （SJCX23_0099）
