Study on Leak Detection of the Pipeline System by Acoustic Emission

음향방출(音響放出)에 의한 배관계(配管系)의 누출방지(漏出防止)에 관한 연구(硏究)

Leak detection testing for the pipeline system was performed by the acoustic emission method. It was found that the detected signal spectrum was influenced by the frequency response of sensors and pressure changes. AE parameters and frequency spectrum distributions were used to analyze the leak signals. The slope rise time of AE parameters were the important factors for distinguishing leak signals. The amplitude of leak signal was more affected by the changes of leak, rate and pressure than those of leak type.