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Detection of Rattle Sources in a Gearbox Using Correlation Technique

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The focus of this paper is a method to detect gearwheel pairs in gearboxes responsible for rattle. The aim of this work is to find a method, which enables the main source of rattle in a gearbox to be detected. This is done by correlating pre-determined (e.g. measured) Impulse Response Functions with the gearbox casing vibration. The Impulse Response Function describes the response on the casing due to an impulse force on the gearwheels. These responses are assumed to be characteristic for all impact events at that gearwheel. By comparing the gearbox vibration at a point with characteristic functions for the possible rattle sources, the most likely source can be identified. The method does not give a unique solution but rather relies on a comparison between the correlation of the gearbox casing vibration and different impulse responses. A main advantage of this technique is that once the Impulse Response Functions have been determined the detection of multiple sources can be carried out on a single point at the gearbox casing. The technique is demonstrated and tested on a running gear box rig. The results show that the used technique supplies means to determine which gearwheel is the main source of rattle.
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Document Type: Research Article

Publication date: January 1, 2001

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  • Acta Acustica united with Acustica, published together with the European Acoustics Association (EAA), is an international, peer-reviewed journal on acoustics. It publishes original articles on all subjects in the field of acoustics, such as general linear acoustics, nonlinear acoustics, macrosonics, flow acoustics, atmospheric sound, underwater sound, ultrasonics, physical acoustics, structural acoustics, noise control, active control, environmental noise, building acoustics, room acoustics, acoustic materials, acoustic signal processing, computational and numerical acoustics, hearing, audiology and psychoacoustics, speech, musical acoustics, electroacoustics, auditory quality of systems. It reports on original scientific research in acoustics and on engineering applications. The journal considers scientific papers, technical and applied papers, book reviews, short communications, doctoral thesis abstracts, etc. In irregular intervals also special issues and review articles are published.
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