Detecting hazardous sources of acoustic-emission signals using the estimated energy of clusters

被引：4
|
作者：
Stepanova, L. N. [1 ]
Ramazanov, I. S. [2 ]
Kanifandin, K. V. [1 ]
机构：
[1] Siberian State Railway Univ, Novosibirsk 630049, Russia
[2] Siberian Aviat Res Inst, Novosibirsk 630051, Russia
来源：
RUSSIAN JOURNAL OF NONDESTRUCTIVE TESTING | 2010年 / 46卷 / 09期
关键词：
welding; flaw; acoustic emission; energy; cluster; incomplete fusion; acoustic-emission transducer; signal source; estimation;
D O I：
10.1134/S106183091009007X
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
A method for detecting hazardous sources of acoustic-emission (AE) signals by the level of their energy activity using clustering by digitized signal shape was considered. The influence of the distance between a source and an AE transducer on the energy of recorded AE signals was analyzed. The energy distribution median of signals in a cluster was proposed for evaluating the hazard of an AE signal source. The application of the developed method was tested based on the example of the analysis of AE inspection data on the welding of steel specimens with incomplete fusion and a crack at the root of a weld seam. This testing confirms the results of the fractographic inspection of a defective weld seam.
引用
收藏
页码：676 / 683
页数：8
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