acoustoelasticity meaning in Chinese
声弹性
Examples
- Detection of stress concentration in aerospace transparency by acoustoelasticity
航空透明件应力集中的声弹检测 - This article describes a way of special ultrasonic system which monitors thermal stress in seamless welded rails . this monitoring system is a non destructive testing system , which adopts avr mcu and high - precise time chip processing as the core of it , and adopts the critically refracted longitudinal wave as the object of measuring . my studying focuses on the theory of the monitoring system , which will be listed in this arctile : according to the snell theory , the theory of motivating of critically refracted longitudinal wave is described in details , and the finite element software is used to emulate the propagating course . the formulas of calculating the pts of swr are taken from the acoustoelasticity theory , and the calculating the parameters is introduced . according to assemble materials , three kinds of ways of monitoring the pts of swr using critically refracted longitudinal wave are described , which are measuring the sound - time in changeless distance , ultrasonic critical - angle refractomery and frequency spectrum , the first way of ways is used in this experiment system . the factors , which effect the monitoring system , are assaid in some degree based
本文的研究工作重点在无缝焊接钢轨温度应力测量系统的理论模块,包括根据snell原理,研究极限折射纵波的激发机理,并使用有限元软件ansys进行仿真;根据声弹性理论以及公式推导出计算无缝焊接钢轨中的温度应力的公式,并对其中参数的求解方法进行介绍;根据收集的资料,介绍了三种使用极限折射纵波测量无缝焊接钢轨温度应力的方法,即固定距离测量声时法、临界角折射法和频谱分析法,本实验系统使用的是第一种;根据实验经验以及相关资料,分析了影响极限折射纵波测量温度应力的几个因素,并提出了相应的解决方法;根据实验系统的需要,独立设计并加工出相关配套的实验设备,包括实验钢块、有机玻璃楔块、固定件、载荷外框装置等。 - In view of the requirement of stress testing in the engineering practice , based on the achievement in ultrasonic ndt and visc , this dissertation investigates the detection of surface stress in several typical components using surface wave acoustoelasticity and its visual expression using visc technology . the nonfiguratived data experimentally or theoretically obtained are converted to visual and idiographic figures , which are easy to understand and analyse
本文针对工程实际中对构件应力检测的需求，结合国内外超声检测技术和科学计算可视化技术的发展趋势，利用超声表面波声弹性方法检测典型构件表面的应力分布状况，并借助计算机可视化技术把应力场分布状况表示出来，将抽象的数据场转换为形象、具体的图形，便于理解、分析和评价。