Standard guide for detection and evaluation of discontinuities by contact pulse - echo straight - beam ultrasonic methods 用触点脉冲回声直束法探测和评价不连续性的标准指南
Signals of a pulse - echo mode ground penetrating radar ( gpr ) possess typical nonstationary and nonlinear properties 摘要脉冲探地雷达回波信号是典型的非平稳、非线性信号。
Abstract : signals of a pulse - echo mode ground penetrating radar ( gpr ) possess typical nonstationary and nonlinear properties 文摘:脉冲探地雷达回波信号是典型的非平稳、非线性信号。
Standard test method for measurement of ultrasonic attenuation coefficients of advanced ceramics by pulse - echo contact technique 用脉冲反射接触技术测量高级陶瓷超声衰减系数的标准试验方法
Standard test method for measuring ultrasonic velocity in advanced ceramics with broadband pulse - echo cross - correlation method 用宽带脉冲反射交互作用法测量高级陶瓷中超声速率的标准试验方法
This paper introduces two methods of ultrasonic characterization of thin layers : longitudinal pulse - echo and lamb waves 摘要介绍了两种常用的材料薄层超声表征方法纵波脉冲回波法和兰姆波法。
Standard practice for detection and evaluation of discontinuities by the immersed pulse - echo ultrasonic method using longitudinal waves 利用纵波的浸入式脉冲回波超声法探测与评价不连续性的标准实施规范
The elastic modulus of a special alloy material are measured by the ultrasonic pulse - echo method , when the temperature is changed from - 20 ~ 60 为实现超声声速的快速、精确测量应用数字相关法精确确定超声信号的传播时间。
The application of longitudinal pulse - echo is relatively simple , which can provide information of the thin layers such as the depth , ultrasonic velocity , attenuation etc 纵波脉冲回波法简单易行,能够获得薄层厚度、声速和衰减等信息。
Standard practice for evaluating performance characteristics of ultrasonic pulse - echo examination instruments and systems without the use of electronic measurement instruments 不用电子测量仪,超声波脉冲回音试验制运转性能的评估的标准操作规程