Francois Combet

TL;DR: In this article, a sensorless algorithm was proposed for angular resampling of the acceleration signal of a gearbox submitted to limited speed fluctuation. But it requires only the knowledge of an approximate value of the running speed and the number of teeth of the gears.

TL;DR: In this paper, the spectral kurtosis (SK) filter was applied to the gear residual signal to detect small tooth surface pitting in a two-stage helical reduction gearbox.

TL;DR: In this article, a method for the estimation of the instantaneous speed relative fluctuation (ISRF) in a vibration signal measured on a system submitted to relatively heavy load and speed fluctuations and without speed measurement available is presented.

TL;DR: In this article, the instantaneous wavelet bicoherence (WB) was used for the first time for the detection of local tooth faults in industrial spur gearboxes, and the proposed WB-based diagnostic feature demonstrates robust experimental performance and superior detection capabilities.

TL;DR: In this paper, an adaptive demodulation technique including a new diagnostic feature is proposed for gear diagnosis in conditions of variable amplitudes of the mesh harmonics using the time synchronous average (TSA) of vibration signals.