Title: A metric for automotive transaxle rattle

Authors: John Wang, Mohamad Qatu, Rao V. Dukkipati

Addresses: Volvo Construction Equipment, 312 Volvo Way, Shippensburg, PA 17257, Shippensburg, Pennsylvania, USA. ' Department of Mechanical Engineering, Mississippi State University, MS State, MS 39762, USA. ' Department of Mechanical Engineering, Fairfield University, Fairfield, CT 06430-5195, USA

Abstract: Transaxle rattle is one of the gear-related noises frequently studied by researchers because the rattle appears often as either a warranty issue or a customer concern of noise, vibration and harshness (NVH) in the automotive industry. Kurtosis of automotive transaxle casing vibration is used to quantify transaxle rattle in this study. It proves that the kurtosis can be employed as a metric for the rattle. The targets are set. The development procedure to ensure green rattle status is recommended. Transaxle rattle data of a vehicle is studied and presented.

Keywords: transaxle rattle; vehicle noise; transaxle casing vibration; vehicle vibration; harshness; kurtosis; gear rattle.

DOI: 10.1504/IJVNV.2009.031133

International Journal of Vehicle Noise and Vibration, 2009 Vol.5 No.4, pp.300 - 307

Published online: 21 Jan 2010 *

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