Nondestructive quantitative detection of localized thickness loss in GFRP composites via microwave NDT

HU Jinhua; LI Yong; TAN Jianguo; CHEN Zhenmao; WU Yongzhuo; LI Wenjia

doi:10.13873/J.1000-9787(2020)03-0113-04

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Nondestructive quantitative detection of localized thickness loss in GFRP composites via microwave NDT

更新时间：2025-09-11

- Nondestructive quantitative detection of localized thickness loss in GFRP composites via microwave NDT
- Issue 3, Pages: 113-116(2020)
- 作者机构：
  
  1. 西安交通大学航天航空学院机械结构强度与振动国家重点实验室陕西省无损检测与结构完整性评价工程技术研究中心
  2. 亿科检测认证有限公司
- 作者简介：
- 基金信息：
- DOI：10.13873/J.1000-9787(2020)03-0113-04
  CLC： TB332;TB302.5
- Published：2020
- 稿件说明：
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HU Jinhua, LI Yong, TAN Jianguo, et al. Nondestructive quantitative detection of localized thickness loss in GFRP composites via microwave NDT[J]. 2020, (3): 113-116.
DOI：

HU Jinhua, LI Yong, TAN Jianguo, et al. Nondestructive quantitative detection of localized thickness loss in GFRP composites via microwave NDT[J]. 2020, (3): 113-116. DOI： 10.13873/J.1000-9787(2020)03-0113-04.

摘要

由于恶劣的服役环境

玻璃纤维增强复合材料(GFRP)易遭受外力冲击进而出现材料减薄损伤

该损伤对结构完整性和安全性构成极大威胁

因此

对GFRP减薄损伤实施有效的无损定量检测具有重大意义。集中探究GFRP减薄损伤的微波无损定量检测手段。建立了微波检测GFRP减薄缺陷的二维有限元仿真模型

仿真研究了减薄缺陷与检测响应信号及其特征的关联规律。搭建了Ka频段(30～40 GHz)微波检测实验平台

通过矩形开口波导探头对GFRP减薄缺陷进行二维扫描成像

获取损伤图像。实验结果表明:微波无损定量检测GFRP减薄缺陷的可行性。

Abstract

Because of the severe environments

in-service glass fiber reinforced polymer（ GFRP） composites is prone to exterior impact. And thus

thickness loss defect appears

which causes serious threats to the integrity and safety of structures. Therefore

it is indispensable to conduct effectively quantitative detection of the thickness loss in GFRP composites with non-destructive testing（ NDT） techniques. Microwave NDT for quantitative detection of the thickness loss in GFRP is intensively investigated. A 2D finite element simulation model for detecting GFRP thickness loss by microwave NDT method is set up and applied for analysis of the relationship between the detecting and response signal as well as its feature and the thickness loss defect. Ka-band（ 30～ 40 GHz） microwave NDT experimental platform is conducted. In experiments

an open-ended rectangular waveguide probe is used for 2D scanning imaging of defect

damage image is obtained. Experimental results verify the feasibility of quantitative detection of GFRP thickness loss defect in microwave NDT method.

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Related Institution

Key Laboratory of Nondestructive Testing,Fujian Polytechnic Normal University

State Key Laboratory for Strength and Vibration of Mechanical Structures,Shaanxi Engineering Research Centre of NDT and Structural Integrity Evaluation,Xi’an Jiaotong University

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