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Title: A study of vehicle and measurement NVH variability
Authors: Dowsett, Amy
O'Boy, D.J.
Walsh, Stephen J.
Abolfathi, Ali
Fisher, Stephen A.
Issue Date: 2016
Publisher: KU Leuven
Citation: DOWSETT, A. ...et al., 2016. A study of vehicle and measurement NVH variability. IN: Proceedings of the International Conference on Noise and Vibration Engineering (ISMA 2016), Leuven, Belgium, September 19-21.
Abstract: A range of nominally identical automotive vehicles have been tested for NVH variability by exciting the engine mount with an impact hammer and measuring the responses at different points on the vehicle. Normalised standard deviations were calculated from the mobility, which fell well within the boundaries of previous comparable measurements. The measurement variability was determined by taking repeat measurements on a single vehicle, which were found to be very repeatable, varying by up to 2.9%. A function that uses the coherence to determine the random error was applied to the data to determine the variability due to the measurement taking process. This was compared with repeat measurements taken on a single vehicle and was shown to agree well with one another. A design of experiments has also been created that determines the effect of each variable such as the temperature and angle of impact on the overall vehicle to vehicle variability.
Description: This conference paper is in closed access.
Sponsor: This work was supported by Jaguar Land Rover and the UK-EPSRC grant EP/K014102/1 as part of the jointly funded Programme for Simulation Innovation.
Version: Accepted for publication
URI: https://dspace.lboro.ac.uk/2134/22554
Publisher Link: https://www.isma-isaac.be/isma_conf/objectives.html
Appears in Collections:Closed Access (Aeronautical and Automotive Engineering)

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