Real-time fast damage detection of shear structures with random base excitation

Yonghui An, Billie F. Spencer, Jinping Ou

Research output: Contribution to journalArticlepeer-review

Abstract

This paper validates the use of two jerk energy-based damage localization methods, proposed for the regular test with pulse excitation in earlier work, in real-time damage detection of shear structures with random base excitation. First, a 20-story shear structure numerical model is considered to provide numerical validation with random base excitation. Then, performance of the two methods in damage detection is experimentally validated through a laboratory-scale 6-story shear structure model. Both experimental and numerical results of single and multiple damage cases with different levels of stiffness loss indicate that the two jerk energy-based methods can also be used in real-time damage detection of shear structures with random base excitation. The two jerk energy-based methods perform well in the presence of high noise level; moreover, they are model-free that avoid establishing the structural finite element model and model updating.

Original languageEnglish (US)
Pages (from-to)92-102
Number of pages11
JournalMeasurement: Journal of the International Measurement Confederation
Volume74
DOIs
StatePublished - Jul 30 2015

Keywords

  • Curvature difference
  • Damage localization
  • Fast damage detection
  • Jerk energy
  • Random base excitation
  • Shear structures

ASJC Scopus subject areas

  • Instrumentation
  • Electrical and Electronic Engineering

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