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Detecting Fatigue Cracks in Gears by Amplitude and Phase Demodulation of the Meshing Vibration
405
Citations
0
References
1986
Year
EngineeringMechanical EngineeringLocal DefectsPhase ModulationVibration AnalysisModal AnalysisCondition MonitoringVibrationsMechanicsPhase DemodulationStructural VibrationStructural Health MonitoringSignal AverageFatigue CracksLow-cycle FatigueMechanical SystemsRandom VibrationStructural MechanicsDynamic Crack PropagationMeshing VibrationWaveform AnalysisVibration Control
A digital signal processing technique is proposed for calculating the amplitude and phase modulation of the tooth meshing vibration of a gear from the signal average of the vibration with application to the early detection of local defects such as fatigue cracks. The importance of phase modulation in the detection of defects is confirmed.