Assessment and evaluation of damage detection method based on modal frequency changes

Hien HoThu, Akira Mita

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

1 Citation (Scopus)

Abstract

Structural health monitoring (SHM) for evaluating and maintaining structural integrity of a building is a very important research field. This paper proposes the use of squared modal frequencies, to detect damage to individual parts of the structures as well their extent by using a limited number of sensors, as proposed by Mita and Hagiwara1. This damage assessment method evaluated in numerical simulations of a five-story shear structure and in shake-table tests of a five-story steel model. The damage to the structure was simulated by reducing the stiffness of each floor. The study showed that it is possible to identify, localize, and evaluate the magnitude of the real damage in a multi-story structure from shifts in its natural frequencies.

Original languageEnglish
Title of host publicationSensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2013
DOIs
Publication statusPublished - 2013 Jun 12
Event2013 SPIE Conference on Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2013 - San Diego, CA, United States
Duration: 2013 Mar 102013 Mar 14

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume8692
ISSN (Print)0277-786X

Other

Other2013 SPIE Conference on Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2013
CountryUnited States
CitySan Diego, CA
Period13/3/1013/3/14

Keywords

  • Damage detection
  • Damage location
  • Damage quantification
  • Natural frequency
  • Sum of squared frequencies

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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  • Cite this

    HoThu, H., & Mita, A. (2013). Assessment and evaluation of damage detection method based on modal frequency changes. In Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2013 [86923M] (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 8692). https://doi.org/10.1117/12.2009087