Acoustic Emission Technique for Pipeline Leak Detection

摘要

In this study, acoustic emission(AE) technique has been applied to detect pipeline leaks. There have been analyzed using two different methods for determining source location, l) reduction in signal amplitude with increasing distance form the source(attenuation-based methods), and 2) increase in signal transit time with increasing distance from the source(time-of-flight based methods). The results on the characteristics of wave propagation and the effect of attenuation in pipeline are presented. It was confirmed that the characteristics of the signal generated by the turbulence of gas in the pipeline is wide band signal having less than 600KHz.