Damage detection of wooden buildings using chaos analysis and system identification

K. Hijikata, A. Mita

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

Abstract

Structural Health Monitoring (SHM), the technology to evaluate the health of the structure (such as earthquake resistance), is getting attention recently. The techniques for evaluating earthquake-proof performance in the building are key elements. However, existing techniques are not so practical as they require professional knowledge on structural engineering. The chaos analysis method, recently proposed by Prof. Okada1) is an attractive method to meet the need. The method evaluates earthquake-proof performance, using chaos analysis. It is clear that there is correlation between chaos theory and physical parameters. This paper proposes a modified version of chaos analysis to make the method stable and reliable. Findings in the course of this study are as follows. (1) The chaos degree rises when attenuation grows. (2) The chaos degree rises by widening the band of the frequency. (3) The ground motion with large power decides the chaos degree. (4) The chaos degree is not unique for the same structure depending on the inputs. These are due to the results of simulation and full-scale experiments. Using these findings, the computational method of the chaos degree without depending on the characteristics of inputs is established. It is a method using the system identification to estimate the parameter model of building from the result of the response due to any inputs. The influence of the input characteristic can be excluded by this method.

Original languageEnglish
Title of host publicationSmart Structures and Materials 2006 - Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems
DOIs
Publication statusPublished - 2006 Jul 20
EventSmart Structures and Materials 2006 - Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems - San Diego, CA, United States
Duration: 2006 Feb 272006 Mar 2

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume6174 I
ISSN (Print)0277-786X

Other

OtherSmart Structures and Materials 2006 - Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems
CountryUnited States
CitySan Diego, CA
Period06/2/2706/3/2

Keywords

  • Chaos analysis
  • Physical Parameters
  • System identification
  • Wooden buildings

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

    Hijikata, K., & Mita, A. (2006). Damage detection of wooden buildings using chaos analysis and system identification. In Smart Structures and Materials 2006 - Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems [61741O] (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 6174 I). https://doi.org/10.1117/12.658954