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2016) Vibration-based fault diagnostic of a spur gearbox. MATEC Web of Conferences, 70 . Abstract. This paper presents comparative studies of Fast Fourier Transform (FFT), Short Time Fourier Transform (STFT) and Continuous Wavelet Transform (CWT) as several advanced time-frequency analysis methods for diagnosing an early stage of spur gear tooth failure. An incipient fault of a chipped tooth was investigated in this work using vibration measurements from a spur gearbox test rig. Timedoi:10.1051/matecconf/20167002004 fatcat:ksv6lkzxm5cxpeoon7nswfi4ly