Micro FBG vibration sensor system for civil infrastructure

H. Kazama, A. Mita

研究成果: Conference contribution

1 被引用数 (Scopus)

抄録

A simple mechanism for a vibration sensor based on fiber Bragg grating (FBG) is proposed. The mechanism utilizes the gravity force to allow the maximum sensitivity of the sensor into vertical direction while the minimum sensitivity for other two transverse directions. The sensor consists of an FBG cable and several masses to form a vibration system. The cable is extended to introduce a certain tensile force and acts as a spring. The sensitivity of the sensor is more than 1μstrain/gal for vertical direction. This simple sensor has been developed for damage detection of large structures. Several prototypes were fabricated. And extensive shake table tests were conducted to examine the performance. Because of the nonlinear behavior of the spring, it was found that the sharp peak will be elapsed beyond certain vibration level. This phenomenon is very useful to make the sensor as simple as possible without adding any damper element.

本文言語English
ホスト出版物のタイトルStructural Health Monitoring and Intelligent Infrastructure - Proceedings of the 1st International Conference on Structural Health Monitoring and Intelligent Infrastructure
ページ1267-1275
ページ数9
出版ステータスPublished - 2003 12 1
イベント1st International Conference on Structural Health Monitoring and Intelligent Infrastructure, SHMII-1'2003 - Tokyo, Japan
継続期間: 2003 11 132003 11 15

出版物シリーズ

名前Structural Health Monitoring and Intelligent Infrastructure - Proceedings of the 1st International Conference on Structural Health Monitoring and Intelligent Infrastructure
2

Other

Other1st International Conference on Structural Health Monitoring and Intelligent Infrastructure, SHMII-1'2003
国/地域Japan
CityTokyo
Period03/11/1303/11/15

ASJC Scopus subject areas

  • 建築および建設
  • 建築

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