標題: Tank bottom leak detection using AE: on the mechanism of the occurrence of AE bursts due to leakage
作者: Yang, MH
Chou, CP
機械工程學系
Department of Mechanical Engineering
公開日期: 1-八月-1998
摘要: During leak and bubble tests on a test tank, AE bursts are frequently detected along with the pressure change due to the unsteady flow close to the hole. A model, based on a postulated unsteady state and concentrating on the relationship between. the flow and the velocity gradient, is presented to explain the occurrence of AE burst. It is suggested that only the stream that is crossing the steep velocity gradient near the hole edge will produce strong AE bursts. An unsteady flow is considered favourable for such stream to occur therefore producing more AE bursts.
URI: http://hdl.handle.net/11536/32491
ISSN: 1354-2575
期刊: INSIGHT
Volume: 40
Issue: 8
起始頁: 553
結束頁: 557
顯示於類別:期刊論文