Transmission of noise and vibration in canopied diesel driven power generating sets

Gallego-Meana, J.M. and Craighead, I.A. and Casey, J.; (2002) Transmission of noise and vibration in canopied diesel driven power generating sets. In: Proceedings of ISMA 2002 International Conference on Noise and Vibration Engineering. ISMA, pp. 1771-1780.

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Abstract

It is widely accepted that the main sources of noise and vibration in canopied Diesel generators are the Diesel engine, the fan and the alternator. This paper focuses on the flanking transmission of noise and vibration from the sources to the canopy and baseframe. The canopy is basically a combination of large rectangular steel plates which behave as noise radiating panels converting vibration into noise which then radiates into the environment. The objective of the research is to identify the main transmission paths and correlate noise and vibration levels. For this purpose a number of measurement positions have been located on the engine, fan, alternator, AVMs, baseframe, canopy and other relevant parts in order to observe levels of noise and vibration. Measurements of the attenuation or amplification of vibration and hence noise radiation has enabled critical areas to be identified as well as overall noise levels in the vicinity of diesel-generator sets.

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