超声波探伤技术应用中的时域波形分析

Analysis of Time Domain Waveform on Ultrasonic Detection Technology Application

超声波探伤是以理论声学和传感器技术为基础而发展起来的无损检测技术,可对缺陷进行定位、定量和定性并减少伪缺陷波在分析中产生影响。本文主要就时域波形分析过程中由于近场区和盲区、检测对象外形和缺陷取向造成的伪缺陷波对缺陷定位和判断的影响进行研究。在理论分析的前提下,通过实验验证理论分析的准确性。

Ultrasonic flaw detection develops as one promising non - destructive testing technology based on theoreti- cal acoustics and transducer technique aiming to locate, quantitate and identify the defects while reduce the influence on wave analysis of false flaw. It concentrates on the research of influence on location and judgment of defects resulting from near field, blind area, configuration of detecting object and orientation of the defects in the process of time domain waveform analysis. Relying on theoretical analysis, the accuracy of the theories is verified through experiments.