2021 | OriginalPaper | Buchkapitel
Detection and Localization of a Gear Fault Using Automatic Continuous Monitoring of the Modulation Functions
Autoren: X. Laval, N. Martin, P. Bellemain, C. Mailhes
Verlag: Springer Singapore
Abstract
In the context of automatic and preventive condition monitoring of rotating machines, this paper presents a case study of a naturally-worn parallel straight gear by monitoring the evolution of the modulation functions. The Hilbert demodulation is automatically performed considering only the frequency content of the signals detected by the AStrion software. The gear has been worn over 3000 h with a constant axial load. A particular focus is set on the amplitude modulation function in order to assess its efficiency to characterize both the severity of the wear and the most worn part of the gear. The results are confronted with on-site observation of the teeth. For this purpose, the evolution of both amplitude and phase modulations over several meshing harmonics are compared, as well as demodulation on both original and residual signals. Indicators to automatically classify the wear are discussed.
