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A Dempster-Shafer evidence theory-based approach for on-line structural health monitoring

  • School of Civil Engineering, Harbin Institute of Technology
  • Dalian University of Technology

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

In this paper, a Dempster-Shafer evidence theory based approach for structural health monitoring is presented. Firstly, Bayesian method is employed to calculate the damage probabilities of substructures using each data set measured from the monitored structure, and the damage probabilities of substructures are transformed to damage basic probability assessments which used in evidence theory. Then the Dempster-Shafer evidence theory is employed to combine the individual damage basic probability assessments for getting the last damage detection results. With considering multisensors data including acceleration and strain, and measurement noise the numerical studies on a 14-bay planar rigid frame structure are carried out. The results indicate that the damage detection results obtained by combining the damage basic probability assessments from each test data are improved compared with the individual results obtained just by each test data separately.

Original languageEnglish
Title of host publicationHealth Monitoring of Structural and Biological Systems 2008
DOIs
StatePublished - 2008
Externally publishedYes
EventHealth Monitoring of Structural and Biological Systems 2008 - San Diego, CA, United States
Duration: 10 Mar 200813 Mar 2008

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume6935
ISSN (Print)0277-786X

Conference

ConferenceHealth Monitoring of Structural and Biological Systems 2008
Country/TerritoryUnited States
CitySan Diego, CA
Period10/03/0813/03/08

Keywords

  • Dempster-Shafer evidence theory
  • Modal strain
  • Structural damage detection
  • Uncertainty

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