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Proceedings Paper

Vibration-based damage identification of reinforced concrete member using optical sensor array data
Author(s): Chin-Hsiung Loh; Shu-Hsien Chao; Chi-Hang Li
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Paper Abstract

Detect and locate the structural damage from direct measurements can be done only when the sensors are very closely located to the damage initiating point, which is generally impossible to predict, particularly for the reinforced concrete structures. With the availability of high resolution distributed sensing, using optical tracker on light targets, the damage location as well as the level of damage can be identified. The objective of this paper is to conduct structural system identification of reinforced concrete frame by using the proposed structural integrity index (identify element curvature and null-space damage index) and the estimation of finite element strain. Finally, discussion on the identified time-varying system natural frequency and stiffness/strength degradation of the reinforced concrete structure from global measurement in relating to the calculated structural integrity index using optical sensing array data and element strain on the identification of damage location and damage severity are presented.

Paper Details

Date Published: 19 April 2013
PDF: 13 pages
Proc. SPIE 8692, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2013, 86920A (19 April 2013); doi: 10.1117/12.2000676
Show Author Affiliations
Chin-Hsiung Loh, National Taiwan Univ. (Taiwan)
Shu-Hsien Chao, National Ctr. for Research on Earthquake Engineering (Taiwan)
Chi-Hang Li, National Taiwan Univ. (Taiwan)

Published in SPIE Proceedings Vol. 8692:
Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2013
Jerome Peter Lynch; Chung-Bang Yun; Kon-Well Wang, Editor(s)

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