Quadratic-nonlinearity power-index spectrum and its application in condition based maintenance (CBM) of helicopter drive trains

Mohammed A. Hassan, David Coats, Yong June Shin, Abdel E. Bayoumi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Citations (Scopus)

Abstract

This paper introduces a quadratic-nonlinearity powers-index spectrum (QNLPI()) measure that describes quantitatively how much of the mean square power at certain frequency is generated by nonlinear quadratic interaction between different frequencies inside signal spectrum. The proposed index QNLPI() is based on the bicoherence spectrum, and the index can be simply seen as summary of the information contained in the bicoherence spectrum in two dimensional graph which makes it easier to interpret. The proposed index is studied first using computer generated data and then applied to real-world vibration data from a helicopter drive train to characterize different mechanical faults. This work advances the development of health indicators based on higher order statistics to assess fault conditions in mechanical systems.

Original languageEnglish
Title of host publication2012 IEEE I2MTC - International Instrumentation and Measurement Technology Conference, Proceedings
Pages1456-1460
Number of pages5
DOIs
Publication statusPublished - 2012 Jul 30
Event2012 IEEE International Instrumentation and Measurement Technology Conference, I2MTC 2012 - Graz, Austria
Duration: 2012 May 132012 May 16

Publication series

Name2012 IEEE I2MTC - International Instrumentation and Measurement Technology Conference, Proceedings

Other

Other2012 IEEE International Instrumentation and Measurement Technology Conference, I2MTC 2012
CountryAustria
CityGraz
Period12/5/1312/5/16

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering

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    Hassan, M. A., Coats, D., Shin, Y. J., & Bayoumi, A. E. (2012). Quadratic-nonlinearity power-index spectrum and its application in condition based maintenance (CBM) of helicopter drive trains. In 2012 IEEE I2MTC - International Instrumentation and Measurement Technology Conference, Proceedings (pp. 1456-1460). [6229264] (2012 IEEE I2MTC - International Instrumentation and Measurement Technology Conference, Proceedings). https://doi.org/10.1109/I2MTC.2012.6229264