Accession Number : ADP010166

Title :   Experimental and Numerical Study of Vibration Monitoring Applied on Gear Transmission Systems

Corporate Author : INSTITUT NATIONAL DES SCIENCES APPLIQUEES DE LYON VILLEURBANNE (FRANCE)

Personal Author(s) : Mahfoudh, J. ; Bard, C. ; Play, D.

PDF Url : ADP010166

Report Date : APR 1996

Pagination or Media Count : 11

Abstract : Predictive maintenance asks for efficient indicators and methods to detect incipient failures. Numerous studies have been made in this domain, but some difficulties stay to isolate the defected elements, to foresee through signal analysis, causes that produce faults, especially when different technological elements are involved simultaneously (gears, bearings, ...). In the first part of this paper, experimental study have been performed on gear faults: manufacturing faults (profile error, deviation, ...) and operating faults (wear, pitting,...) in order to establish a kind of data base for fault identification. Then, operating faults were examined and a procedure of identification of faults nature have been developed. Statistical treatment of both time and time- frequency (wavelet analysis) domains give arise to robust indicators. The second part deals with the definition of thresholds for machinery stops. Calculations of the dynamic behavior of the geared system show that how a gear fault modify the gear profile and the kinematic transmission error, while stiffness modification have almost no significant effect on the system response.

Descriptors :   *SYMPOSIA, *TRANSMISSION GEARS, KINEMATICS, MAINTENANCE, SIGNAL PROCESSING, VIBRATION, MONITORING, NUMERICAL ANALYSIS, FRANCE, STATISTICAL ANALYSIS.

Subject Categories : Machinery and Tools
      Statistics and Probability

Distribution Statement : APPROVED FOR PUBLIC RELEASE