Experimental Study of Combined Gear and Bearing Faults by Sound Perception

摘要

One presented in this work a vibro acoustic analysis of various signals in the case of one or several combined defects such as bearings and gears defects. The objective is to identifying each of the defects even when it combined. We begin by studying the temporal and spectral scalar indicators; a perceptive analysis of the sounds corresponding to different types of defects have been established to investigate the sensitivity of listeners to the combined defects, and the ability to distinguish between defects with different types and natures. According to the study of the vibrational indicators and of the listening test, the results are well preventative of the evolution of different defects gravity. For sound perception, the listeners could classify the sounds according to the type and the level of defects gravities.