Feature Extraction for Damage Detection in Structures Based on Nonlinearity Analysis

Zhi Ke Peng; Z.Q. Lang; C. Wolters; S.A. Billings

doi:10.4028/www.scientific.net/KEM.413-414.627

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HomeKey Engineering MaterialsKey Engineering Materials Vols. 413-414Feature Extraction for Damage Detection in...

Feature Extraction for Damage Detection in Structures Based on Nonlinearity Analysis

Abstract:

In the present study, a nonlinear system identification approach known as NARMAX (Nonlinear Auto-Regressive Moving Average with eXogenous Inputs) modelling method and the NOFRF (Nonlinear Output Frequency Response Function) are introduced to detect damage in plate. A set of NOFRF-based damage features is proposed, and the procedure about how to extract the features from the measured response data is presented in detail. An experimental application to the detection of damages in aluminium plates demonstrates the effectiveness and engineering significance of the new damage detection technique.

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Periodical:

Key Engineering Materials (Volumes 413-414)

Pages:

627-634

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.413-414.627

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Online since:

June 2009

Authors:

Zhi Ke Peng, Z.Q. Lang, C. Wolters, S.A. Billings

Keywords:

Damage Detection, NARMAX Model, Nonlinear Output Frequency Response Function, Nonlinear Vibration, Volterra Series

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