光学测量玻璃纤维增强复合材料表面离面位移场分布

摘要

利用一种测量玻璃纤维增强复合材料表面力学特性的装置，通过激光波数扫描干涉的方法，高精度测量不同结构下加载前后玻璃纤维增强复合材料测试样件表面离面位移场分布。测量结果表明玻璃纤维增强复合材料样件在不同结构下，离面位移场整体分布都以加载点为中心向四周递减，其最大离面位移量与加载量基本成线性正比关系。该测量方法具有较高的稳定性及信噪比，测量精度高。该测量方法为玻璃纤维增强复合材料力学性能表征及无损检测提供了一种新型的技术平台。%This paper uses an optical device for measuring glass fiber with reinforced composite material surface of the mechanical properties .By laser wave number-scanning interference , high precision meas-urement was conducted before and after loading the out-of-plane displacement fields of the different struc-tures of glass fiber with reinforced composite material when testing the front surface of the sample .The measurement results show that the out-of-plane displacement field integral distribution of different struc-tures of the glass fiber with reinforced composite material testing sample will decrease from the center of the loading point to the periphery .The maximum out-of-plane displacement is linearly proportional to the loading quantity .The measurement method is more stable and precise with high signal-to-noise ratio . This method provides a new technical platform for detecting the mechanical properties and nondestructive testing of the glass fiber with reinforced composite material .