The detection of incipient faults in small multi-cylinder diesel engines using multiple acoustic emission sensors

Wu, Weiliang (2014) The detection of incipient faults in small multi-cylinder diesel engines using multiple acoustic emission sensors. PhD thesis, Queensland University of Technology.

Abstract

This thesis investigates condition monitoring (CM) of diesel engines using acoustic emission (AE) techniques. The AE signals recorded from a small size diesel engine are mixtures of multiple sources from multiple cylinders. Thus, it is difficult to interpret the information conveyed in the signals for CM purposes. This thesis develops a series of practical signal processing techniques to overcome this problem. Various experimental studies conducted to assess the CM capabilities of AE analysis for diesel engines. A series of modified signal processing techniques were proposed. These techniques showed promising results of capability for CM of multiple cylinders diesel engine using multiple AE sensors.

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232 since deposited on 08 Jan 2014
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ID Code: 65649
Item Type: QUT Thesis (PhD)
Supervisor: Tan, Andy, Tang, Tee, & Mathew, Joseph
Keywords: Condition Monitoring, Multi-Cylinder Diesel Engine, Acoustic Emission, Frequency Normalisation, Source Separation and Identification
Divisions: Current > Schools > School of Chemistry, Physics & Mechanical Engineering
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Institution: Queensland University of Technology
Deposited On: 08 Jan 2014 06:08
Last Modified: 07 Sep 2015 01:02

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