点击次数：

论文类型：期刊论文

发表时间：2013-09-01

发表刊物：SENSORS

收录刊物：SCIE、EI、PubMed、Scopus

卷号：13

期号：9

页面范围：12548-12563

ISSN号：1424-8220

关键字：centrifugal compressor; blade crack; condition classification; squared envelope spectrum

摘要：Centrifugal compressors are a key piece of equipment for modern production. Among the components of the centrifugal compressor, the impeller is a pivotal part as it is used to transform kinetic energy into pressure energy. Blade crack condition monitoring and classification has been broadly investigated in the industrial and academic area. In this research, a pressure pulsation (PP) sensor arranged in close vicinity to the crack area and the corresponding casing vibration signals are used to monitor blade crack information. As these signals cannot directly demonstrate the blade crack, the method employed in this research is based on the extraction of weak signal characteristics that are induced by blade cracking. A method for blade crack classification based on the signals monitored by using a squared envelope spectrum (SES) is presented. Experimental investigations on blade crack classification are carried out to verify the effectiveness of this method. The results show that it is an effective tool for blade crack classification in centrifugal compressors.