Fast orthogonal search (FOS) versus fast Fourier transform (FFT) as spectral model estimations techniques applied for structural health monitoring (SHM)

Ahmed El-Shafie, Aboelmagd Noureldin, Don McGaughey, Aini Hussain

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

In the last decade, structural health monitoring (SHM) systems became essential to accurately monitor structural response due to real-time loading conditions, detect damage in the structure, and report the location and nature of this damage. Spectral analysis using Fourier transform has been widely used in SHM. In this research, a novel approach for the characterization of in structure damage in civil structure is introduced. The target is to develop vibration-based damage detection algorithms that can relate structural dynamics changes to damage occurrence in a structure. This article presents a new method utilizing high resolution spectral analysis based on Fast Orthogonal Search (FOS) techniques. FOS is a signal processing tool developed to provide high-resolution spectral estimation. In addition, it is a general-purpose non-linear modeling technique that finds functional expansions using an arbitrary set of non-orthogonal candidate functions. In order to examine the proposed method, the IASC-ASCE structural health monitoring benchmark structure is used in this study to illustrate the merits and limitation of the proposed approach. We also discuss the merits and the limitations of FOS as applied to SHM.

Original languageEnglish
Pages (from-to)503-513
Number of pages11
JournalStructural and Multidisciplinary Optimization
Volume45
Issue number4
DOIs
Publication statusPublished - Apr 2012

Fingerprint

Structural health monitoring
Health Monitoring
Fast Fourier transform
Fast Fourier transforms
Damage
Spectrum analysis
Spectral Analysis
High Resolution
Damage detection
Spectral resolution
Structural dynamics
Spectral Estimation
Nonlinear Modeling
Damage Detection
Model
Structural Dynamics
Vibrations (mechanical)
Fourier transforms
Signal processing
Monitoring System

Keywords

  • Damage detection
  • Fast orthogonal search (FOS)
  • Fourier transform
  • SHM
  • Spectral analysis

ASJC Scopus subject areas

  • Software
  • Computer Graphics and Computer-Aided Design
  • Computer Science Applications
  • Control and Systems Engineering
  • Control and Optimization

Cite this

Fast orthogonal search (FOS) versus fast Fourier transform (FFT) as spectral model estimations techniques applied for structural health monitoring (SHM). / El-Shafie, Ahmed; Noureldin, Aboelmagd; McGaughey, Don; Hussain, Aini.

In: Structural and Multidisciplinary Optimization, Vol. 45, No. 4, 04.2012, p. 503-513.

Research output: Contribution to journalArticle

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