基于数字剪切散斑干涉的碳纤维复合材料层压板缺陷检测方法  

Defect Detection Method of Carbon Fiber Composite Laminate Based on Digital Shearing Speckle Interferometry

作　　者：李姝欣 杨馥 钟平[1] 陈佳伟 Li Shuxin;Yang Fu;Zhong Ping;Chen Jiawei(College of Science,Donghua University,Shanghai 201620,China)

机构地区：[1]东华大学理学院

出　　处：《应用激光》2019年第5期872-879,共8页Applied Laser

基　　金：国家自然基金(项目编号:51975116,51575099)

摘　　要：提出利用数字剪切散斑干涉技术对复合材料层压板缺陷进行检测,搭建了实验系统和仿真系统,通过与X光探伤技术及超声C扫的检测结果进行了对比,证明了所提出方法有效性;通过对不同曲率层压板的实验结果进行分析,证明了所提出方法的有效性。此外,本文还提出了相对形变相位阈值作为检测缺陷是否有效的判断标准,并根据此标准推测不同温度加载条件下的缺陷检测能力,为数字剪切散斑技术应用于复合材料缺陷检测加载参数设置提供参考。The purpose of this paper is to investigate the detection method of composite laminates by using digital shear speckle interferometry, and to establish an experimental and simulation system to verify the test results. The effectiveness of the detection method is verified by comparing to the X-ray inspection technology and ultrasonic C-scan test results. The effectiveness of the proposed method is verified by analyzing the testing results of different curvature laminates. In addition, the concept of relative deformation phase threshold is proposed as a criterion for judging whether a defect can be successfully detected. According to this standard, the defect detection capability under different temperature loading conditions can be inferred, therefore to guide the actual loading parameters of the digital shear speckle technique.

关 键 词：数字剪切散斑 复合材料层压板 曲面壳 有限元分析 缺陷检测 

分 类 号：TP302.1[自动化与计算机技术—计算机系统结构]