基于激光扫描法的纤维增强复合薄板损伤定位研究

doi:10.3901/JME.2019.18.008

机械工程学报 ›› 2019, Vol. 55 ›› Issue (18): 8-14.doi: 10.3901/JME.2019.18.008

• 仪器科学与技术 • 上一篇

基于激光扫描法的纤维增强复合薄板损伤定位研究

李晖, 常永乐, 张体南, 徐忠浩, 闻邦椿

东北大学机械工程与自动化学院沈阳 110004

收稿日期:2018-07-13 修回日期:2019-01-15 发布日期:2020-01-07
通讯作者: 李晖(通信作者),男,1982年出生,博士后,副教授。主要研究方向为复合薄壁构件振动测试及故障诊断。E-mail:lh200300206@qq.com
作者简介:常永乐,男,1989年出生。主要研究方向为纤维增强复合薄板振动特性测试方法。E-mail:631081103@qq.com
基金资助:
国家自然科学基金（51505070）、中央高校基本科研业务费专项资金（N150304011，N160313002）和东北大学航空动力装备振动及控制教育部重点实验室研究基金（VCAME201603）资助项目。

Study on Damage Location Detection of Fiber-reinforced Composite Thin Plate Based on Laser Linear Scanning Method

LI Hui, CHANG Yongle, ZHANG Tinan, XU Zhonghao, WEN Bangchun

School of Mechanical Engineering & Automation, Northeastern University, Shenyang 110004

Received:2018-07-13 Revised:2019-01-15 Published:2020-01-07

摘要/Abstract

摘要： 采用激光扫描法研究了纤维增强复合薄板的损伤定位问题。建立复合薄板激光扫描线框模型，在明确振型数据提取原理的基础上，提出二维五点三次曲面平滑法，并推导获得用于损伤定位检测的量化指标-损伤位置指数。编写Matlab计算程序，并给出基于激光扫描法进行损伤定位的具体流程。搭建激光扫描振动测试系统，并以带有纤维断裂损伤的TC300碳纤维/树脂复合薄板为研究对象，进行实际测试。试验结果表明，利用上述方法可以准确检测出复合薄板的损伤位置，该方法及相关试验系统可以为复合材料结构的损伤检测及识别提供一种新思路。

关键词: 纤维增强复合薄板, 二维五点三次曲面平滑法, 损伤定位, 激光扫描法, 试验研究

Abstract: This research studies damage location detection of fiber-reinforced composite thin plate based on laser scanning method. The laser scanning frame model of the composite plate is established, and when the extraction principle of modal shape data is illustrated, two-dimensional five-spot-tripling surface smoothing method is proposed, so that a quantitative index for damage location detection of fiber-reinforced composite thin plate, i.e., the damage location index can be derived. The Matlab calculation program is written, and the specific damage location detection procedures of composite plate based on laser scanning method are also proposed. T300 fiber/epoxy composite plate is taken as a study object, and damage detection experiment is performed based on the established laser scanning vibration testing system. It has been proved that the above method can detect fiber breakage position of such composite plate with high accuracy, and this method and the related experimental system can provide a new idea for damage detection and identification of composite structures.

Key words: fiber-reinforced composite plate, two-dimensional five-spot-tripling surface smoothing method, damage location detection, laser linear scanning, experimental study

中图分类号:

TB535

李晖, 常永乐, 张体南, 徐忠浩, 闻邦椿. 基于激光扫描法的纤维增强复合薄板损伤定位研究[J]. 机械工程学报, 2019, 55(18): 8-14.

LI Hui, CHANG Yongle, ZHANG Tinan, XU Zhonghao, WEN Bangchun. Study on Damage Location Detection of Fiber-reinforced Composite Thin Plate Based on Laser Linear Scanning Method[J]. Journal of Mechanical Engineering, 2019, 55(18): 8-14.

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基于激光扫描法的纤维增强复合薄板损伤定位研究

Study on Damage Location Detection of Fiber-reinforced Composite Thin Plate Based on Laser Linear Scanning Method

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