散斑干涉自动化测试技术与工程应用

发布时间：2018-03-16 19:36

本文选题：散斑干涉　切入点：实时相移　出处：《上海大学》2016年博士论文　论文类型：学位论文

【摘要】：电子剪切散斑干涉技术可直接测量位移导数,具有光路简单、非接触、大面积、全场检测和隔振要求低等特点,成为航空航天、船舶、军工、电子等领域复合材料无损检测非常有效的手段,是现代无损检测领域的研究热点。本文在全面分析国内外相关研究的基础上,研究了剪切散斑的条纹自动化处理方法、自动加载技术和散斑干涉集成化系统的研制。论文的主要工作分为以下几个部分:1.运用剪切散斑干涉技术对橡胶金属粘接结构进行无损检测实验,评估该技术的无损检测能力,同时采用数值计算方法分析不同加载方式的橡胶金属粘接结构的变形机理;2.研制了便携式剪切散斑无损检测系统,详细介绍了各部分的主要功能和技术特点;3.研究了光纤传导的剪切散斑干涉技术,利用光纤实现激光传输和干涉图像的传输,该系统可用于容器内壁粘接质量的无损检测;4.将实时相移技术引入到散斑干涉技术中,研制了一套散斑干涉三维变形测量系统,并对周边固支圆盘进行面内变形和离面变形测量;5.对比目前常用的两种非接触式光学无损检测技术——剪切散斑干涉和红外热成像技术,通过一系列复合材料样件的检测对比,分析了两种方法的适应性。
[Abstract]:Electronic shearing speckle interferometry can measure the displacement derivative directly. It has the characteristics of simple optical path, non-contact, large area, low requirements for full-field detection and vibration isolation, and becomes aerospace, ship, military industry, etc. Nondestructive testing (NDT) of composite materials in electronics and other fields is a hot topic in the field of modern nondestructive testing. Based on the comprehensive analysis of related research at home and abroad, the automatic processing method of shearing speckle is studied in this paper. The development of automatic loading technology and speckle interferometry integrated system. The main work of this paper is divided into the following parts: 1.Using the shear speckle interferometry to carry on the nondestructive testing experiment to the rubber metal bonding structure, and to evaluate the nondestructive testing ability of the technology. At the same time, numerical calculation method is used to analyze the deformation mechanism of rubber metal bonding structure with different loading modes. 2. A portable non-destructive testing system for shear speckle is developed. The main functions and technical characteristics of each part are introduced in detail. 3. The shearing speckle interferometry of optical fiber conduction is studied. The laser transmission and interference image transmission are realized by using optical fiber. The system can be used for the nondestructive testing of the bonding quality of the vessel's inner wall. The real-time phase shift technique is introduced into the speckle interferometry, and a set of three dimensional deformation measurement system for speckle interferometry is developed. The in-plane deformation and off-plane deformation of the peripheral clamped disc are measured and compared with two commonly used non-contact optical nondestructive testing techniques, shear speckle interferometry and infrared thermal imaging, and a series of composite material samples are tested and compared. The adaptability of the two methods is analyzed.
【学位授予单位】：上海大学
【学位级别】：博士
【学位授予年份】：2016
【分类号】：O436.1

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