Fault localization in ring type structures with a second-order output spectrum based method

Q. K. Li, X. J. Jing

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

Abstract

In order to localize nonlinear faults in ring type structures, a novel second-order output spectrum (SOOS) based method is proposed in this paper. Along the vibration transmission paths in complex structures, the ring type structures are found and labeled by the sensor chains. The ring type multiple degree-of-freedom (MDOF) model and Volterra series are utilized to describe the nonlinear behavior of these ring type structures with nonlinear faults and inherent nonlinearity. With harmonic excitation analysis and local tuning approach (LTA), the properties of the SOOS of nonlinear ring type structure are derived and analyzed. Based on these properties, a novel SOOS based method with a local damage index is proposed for nonlinear fault localization. In the numerical study, the results of comparison between previous and novel methods demonstrate that the proposed local damage index can provide more correct information of fault positions, and hence the novel method can be used for multiple fault diagnosis in ring type structure with inherent nonlinearity.

Original languageEnglish
Title of host publication9th ECCOMAS Thematic Conference on Smart Structures and Materials, SMART 2019
EditorsAyech Benjeddou, Nazih Mechbal, Jean-Francois Deu
PublisherInternational Center for Numerical Methods in Engineering
Pages1538-1549
Number of pages12
ISBN (Electronic)9788494919466
Publication statusPublished - 2019
Event9th ECCOMAS Thematic Conference on Smart Structures and Materials, SMART 2019 - Paris, France
Duration: 8 Jul 201911 Jul 2019

Publication series

Name9th ECCOMAS Thematic Conference on Smart Structures and Materials, SMART 2019

Conference

Conference9th ECCOMAS Thematic Conference on Smart Structures and Materials, SMART 2019
Country/TerritoryFrance
CityParis
Period8/07/1911/07/19

Keywords

  • Damage Indicator
  • Fault Localization
  • Nonlinear Fault
  • Ring Type

ASJC Scopus subject areas

  • Materials Science(all)
  • Energy(all)
  • Pollution

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