Dowsett, A; O'Boy, DJ; Walsh, SJ; Abolfathi, A; Fisher, SA; (2016) A study of vehicle and measurement NVH variability. In: (Proceedings) USD2016: 6th International Conference on Uncertainty in Structural Dynamics, 19-21 September 2016, Leuven, Belgium. KU Leuven: Heverlee, Belgium. (In press).

Preview

Text ISMA2016_full_paper_conference_paper.pdf - Accepted Version Download (1MB) | Preview

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.

Download activity - last month

Export as JSONXMLCSV

Download activity - last 12 months

Export as JSONCSVXML

Downloads by country - last 12 months

Export as XMLCSVJSON

Archive Staff Only

View Item