Damage detection tests of five-story steel frame with simulated damages

K. Morita, M. Teshigawara, H. Isoda, T. Hamamoto, Akira Mita

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

16 Citations (Scopus)

Abstract

This paper presents damage detection tests of five-story steel frame with simulated damages. We discuss pre-analytical study and results of experiments. Fiber brag grating (FBG) sensors, accelerometers, strain gauges and laser displacement meters are installed in this test frame. We assume damages by removing studs from only one story, loosening bolts of beams, cutting part of beams and extracting braces from only one story. From the results of pre-analytical study, we can estimate which story is damaged from the change of natural period and mode shape to some extent. We applied flexibility method which is one of a damage identification methods using modal properties. We also apply flexibility method to results of experiments. In some cases we can estimate which story is damaged, and in other cases we cannot. We also applied a method using multiple natural frequency shifts. Making use of the change in five natural frequencies due to damage, the location of damaged stories can be pinpointed. In both methods, we cannot identify damaged story in some cases. Some method other than methods using modal properties have to be tried to apply in such cases.

Original languageEnglish
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
EditorsT. Kundu
Pages106-114
Number of pages9
Volume4335
DOIs
Publication statusPublished - 2001
EventAdvanced Nondestructive Evaluation for Structural and Biological Health Monitoring - Newport Beach, CA, United States
Duration: 2001 Mar 62001 Mar 8

Other

OtherAdvanced Nondestructive Evaluation for Structural and Biological Health Monitoring
CountryUnited States
CityNewport Beach, CA
Period01/3/601/3/8

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Keywords

  • Damage detection
  • Health monitoring
  • Identification techniques
  • Smart structure

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics

Cite this

Morita, K., Teshigawara, M., Isoda, H., Hamamoto, T., & Mita, A. (2001). Damage detection tests of five-story steel frame with simulated damages. In T. Kundu (Ed.), Proceedings of SPIE - The International Society for Optical Engineering (Vol. 4335, pp. 106-114) https://doi.org/10.1117/12.434163