A Comparison of Nonlinear Techniques for Structural Health Monitoring

Leonid M. Gelman, Paul R. White, Joe K. Hammond

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

Abstract

This paper compares two nonlinear techniques that can be used for structural health monitoring. The first technique is based on magnitude bispectrum and the second technique uses the complex bispectrum. Both techniques are essentially nonparametric and thus are generic. As is the character of nonparametric methods these approaches are widely applicable. The goal is to provide technique that can to some sense quantify the degree of nonlinearity and so be used as indicators of structural faults. Paper concentrates on the comparison of two techniques exploiting the bispectrum as tool to detect nonlinearity. This comparison is conducted using measured data from the cracked and un-cracked compressor blades from a helicopter engine.

Original languageEnglish
Title of host publication47th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference
PublisherAmerican Institute of Aeronautics and Astronautics
Pages6174-6179
Number of pages6
ISBN (Electronic)1563478080, 9781624100406
DOIs
Publication statusPublished - 2006
Externally publishedYes
Event47th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference - Newport, United States
Duration: 1 May 20064 May 2006
Conference number: 47

Publication series

NameCollection of Technical Papers - AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference
PublisherAmerican Institute of Aeronautics and Astronautics
Volume9
ISSN (Electronic)0273-4508

Conference

Conference47th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference
CountryUnited States
CityNewport
Period1/05/064/05/06

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