Structural health monitoring by high-frequency vibration measurement with non-contact laser excitation

I. Kajiwara, D. Miyamoto, N. Hosoya, C. Nishidome

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

4 Citations (Scopus)

Abstract

This paper proposes a vibration testing and health monitoring system based on an impulse response excited by a laser ablation. High power YAG pulse laser is used for producing an ideal impulse force on structural surface. It is possible to measure high frequency vibration responses in this system. A health monitoring system is constructed by this vibration testing system and a damage detecting algorithm. A microscopic damage of structures can be extracted by detecting fluctuations of high frequency vibration response with the present health monitoring system. In this study, loosening of bolt tightening torques is defined as the damage of the system. The damage is detected and identified by statistical evaluations with Recognition-Taguchi method.

Original languageEnglish
Title of host publicationHealth Monitoring of Structural and Biological Systems 2011
DOIs
Publication statusPublished - 2011 May 24
EventHealth Monitoring of Structural and Biological Systems 2011 - San Diego, CA, United States
Duration: 2011 Mar 72011 Mar 10

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume7984
ISSN (Print)0277-786X

Conference

ConferenceHealth Monitoring of Structural and Biological Systems 2011
CountryUnited States
CitySan Diego, CA
Period11/3/711/3/10

Keywords

  • Health monitoring
  • Impulse response
  • Laser ablation
  • Loose bolt detection
  • MT method
  • RT method

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

    Kajiwara, I., Miyamoto, D., Hosoya, N., & Nishidome, C. (2011). Structural health monitoring by high-frequency vibration measurement with non-contact laser excitation. In Health Monitoring of Structural and Biological Systems 2011 [79841K] (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 7984). https://doi.org/10.1117/12.879355