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Vibration of cylinder liners affects not only engine combustion performances but also tribological behaviour and noise radiations. However, it is difficult to characterize it experimentally due to multiple sources, strong background noise, and nonlinear transfer paths. Therefore, a finite element model is established in this study to predict the dynamic responses of cylinder liners under respective...
This paper proposes a new method to detect annoying sounds in-car cabins. Based on the fact that annoying sounds are usually triggered off by harsh road conditions and hence occur occasionally and instantly. The signals for such sounds would have a broadband spectrum in the frequency domain. From this understanding, a detection scheme is developed to find the instants of the abnormal sounds in the...
This paper presents an investigation into the diagnosis of transmission belt condition through acoustic monitoring. A relevant belt model and laser interferometry measurements are used to guide the design and analysis of the acoustic monitoring system. The fault under scrutiny is the development of a loss of tension in the belt which may occur due to degradation of belt material. Results show that...
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