ISMA2016_full_paper_conference_paper.pdf (1.33 MB)
Download file

A study of vehicle and measurement NVH variability

Download (1.33 MB)
conference contribution
posted on 23.09.2016, 12:29 by Amy Dowsett, Daniel O'BoyDaniel O'Boy, Stephen Walsh, Ali Abolfathi, Stephen A. Fisher
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.


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.



  • Aeronautical, Automotive, Chemical and Materials Engineering


  • Aeronautical and Automotive Engineering

Published in

ISMA International Conference on Noise and Vibration Engineering


DOWSETT, A. 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.


KU Leuven


AM (Accepted Manuscript)

Publisher statement

This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at:

Acceptance date


Publication date



This is a conference paper.




Leuven, Belgium

Usage metrics