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Fault diagnosis of an electro-pump in a marine ship using vibration condition monitoring

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Changes in the health, or condition, of a machine often produce changes in the machine's vibration. Even a perfectly healthy machine produces some degree of vibration, as it is virtually impossible to have perfect balance and alignment. Additionally, the machine itself may produce vibration as part of its process or work. Condition monitoring monitors for a change in the vibration that a machine normally produces. The vibration technique in a machine condition monitoring programme provides useful reliable information, bringing significant cost benefits to industry. In this research, the vibration analysis was initially run under regular intervals during the electro-pump life. A series of tests were then conducted under the operating hours of the electro-pump. Vibration data was regularly collected and the overall vibration data produced by vibration analysis was compared with previous data. Numerical data produced by vibration analysis was compared with the vibration spectra of a healthy electro-pump, in order to quantify the effectiveness of the vibration condition monitoring technique. The results of this paper provide more understanding on the dependent roles of vibration analysis in predicting and diagnosing electro-pump faults.
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Keywords: Vibration analysis; condition monitoring; electro-pump; predicting and diagnosing faults

Document Type: Research Article

Affiliations: 1 Born in Shiraz, Iran, in 1969. He received a BSc degree in Agricultural Machinery Engineering from the University of Shiraz, Iran, in 1992, and MSc and PhD degrees in Mechanical Engineering of Agricultural Machinery from the University of Tehran, Iran, in 1996 and 2001, respectively. He is currently Assistant Professor in the Department of Mechanical Engineering of Agricultural Machinery, Faculty of Biosystems Engineering, University of Tehran, PO Box 4111, Karaj 31587-77871, Iran. His current research interests are machinery fault detection, vibration & oil monitoring, precision agriculture and system maintenance. hjahmadiut.ac.ir., Tel: 9891233 47517

Publication date: August 1, 2009

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