A shearography nondestructive testing instrument for composite based on Wollaston prism
于霄翊 1曾启林 1徐宋通 1熊显名 1张文涛 1杜浩 1石冯睿1
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作者信息
1. 桂林电子科技大学光电工程学院,桂林 541004
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摘要
激光错位散斑干涉技术具有全场非接触、高精度和高灵敏度等优点,被广泛应用于复合材料的无损检测领域.针对实际工程应用中的复合材料缺陷检测,提出了一种结构紧凑、抗干扰能力强的基于沃拉斯顿棱镜的错位散斑干涉无损检测仪,实现了对缺陷的实时动态检测.使用该检测仪对不同类型复合材料中的缺陷进行检测,检出率可达97％,可检测的最小缺陷尺寸为φ2 mm.
Abstract
Shearography technique has the advantages of full-field noncontact,high precision and high sensitivity,and is widely used in the field of nondestructive detection of composites.For the practical engineering application of composite defect detection,a shearography nondestructive instrument based on a Wollaston prism with compact structure and strong anti-interference ability was proposed,so as to realize real-time dynamic defect detection.The system was used to teste the different types of composite materials.It achieved a detection rate of 97％and can detect defects as small as 2 mm.
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