Dynamic response and time-frequency analysis for gear tooth crack detection
Time-varying gear mesh stiffness was investigated for different crack cases. The frequency response functions of the gear model were derived for healthy and faulty cases. Dynamic simulation was performed to study the dynamic response for all studied cases. A new approach involving a short-time Fourier transform was applied for gear fault detection. The proposed method shows promising results for gear crack detection and size estimation.
gear tooth crack gear mesh stiffness short-time fourier transform gear dynamic modelling vibration analysis