Positioning rub of the aero-engine based on acoustic emission and Mathematical Morphology in noise background

摘要：

Aiming at the practical requirement of locating and diagnosis of aero-engine rub fault and the impact of noise on the positioning accuracy, this paper introduces Mathematical Morphology to preprocess the acoustic emission (AE) signals, and uses Matrix Locating Method to confirm rub fault and its position: firstly, the improved Matrix Locating Method and Mathematical Morphology are introduced by referring the rub AE source locating; then, the rub AE signals were collected by sensor arrays on the case of rub fault simulated test-bed, and locating precisions of some typical issues are compared between before and after using morphology filter, and the results show that the introduction of Mathematical Morphology receives favorable effect on AE locating of rub fault in noise background.

关键词： Locating acoustic emission Mathematical Morphology rub fault diagnosis

作者: MA Chao MA Yuejun HE Tian GU Zhengfu

作者单位: School of Transportation Science and Engineering,Beihang University,Beijing,100191,P.R.China

会议类型: 国际会议

会议名称: 航空器适航技术与管理国际会议 ISAA 2011

会议地点: 北京

会议语种:英文

页码: 654-659

在线出版日期: 2011-10-01（万方平台首次上网日期，不代表论文的发表时间）