Accession Number : ADA290195

Title :   Vibration Signature Analysis of a Faulted Gear Transmission System.

Descriptive Note : Technical mem.,

Corporate Author : NATIONAL AERONAUTICS AND SPACE ADMINISTRATION CLEVELAND OH LEWIS RESEARCH CEN TER

Personal Author(s) : Choy, F. K. ; Huang, S. ; Zakrajsek, J. J. ; Handschuh, R. F. ; Townsend, D. P.

PDF Url : ADA290195

Report Date : JUN 1994

Pagination or Media Count : 16

Abstract : A comprehensive procedure in predicting faults in gear transmission systems under normal operating conditions is presented. Experimental data was obtained from a spiral bevel gear fatigue test rig at NASA Lewis Research Center. Time synchronous averaged vibration data was recorded throughout the test as the fault progressed from a small single pit to severe pitting over several teeth, and finally tooth fracture. A numerical procedure based on the Winger-Ville distribution was used to examine the time averaged vibration data. Results from the Wigner-Ville procedure are compared to results from a variety of signal analysis techniques which include time domain analysis methods and frequency analysis methods. Using photographs of the gear tooth at various stages of damage, the limitations and accuracy of the various techniques are compared and discussed. Conclusions are drawn from the comparison of the different approaches as well as the applicability of the Wigner-Ville method in predicting gear faults.

Descriptors :   *FRACTURE(MECHANICS), *DYNAMIC LOADS, *GEAR TEETH, VIBRATION, EXPERIMENTAL DATA, TIME SERIES ANALYSIS, TRANSMITTANCE, SIGNATURES, NUMERICAL METHODS AND PROCEDURES, TIME DOMAIN, GEARS, FATIGUE TESTS(MECHANICS), FAULTS, TRANSMISSIONS(MECHANICAL), PITTING.

Subject Categories : Machinery and Tools
      Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE