Cited by 30Structural Health Monitoring TechniquesStructural Engineering and Materials AnalysisVibration and Dynamic Analysis

Damage detection of concrete beams using nonlinear features of forced vibration

Chen, Genda, Yang, Xinbao, Ying, Xiaofei, Nanni, Antonio·2006·Structural Health Monitoring

Abstract

A new indicator is proposed to facilitate the detection of newly induced damage in reinforced concrete (RC) beams, based on the transient characteristics of nonlinear vibration. Two full-scale RC beams, one reinforced with externally bonded fiber-reinforced-polymer sheets, are tested to develop the proposed damage indicator. Both beams are statically and dynamically loaded to correlate the dynamic characteristics of the beams to the damage level. A phenomenological model is developed to simulate the general behavior of cracked concrete members with a softening Duffing oscillator. Numerical results and test data show that the indicator rapidly increases with the severity of damage and is very sensitive to cracking even under service loads. The indicator is directly related to the transient features along crack surfaces and requires no baseline in practical applications. Experimental test results also show that the fundamental natural frequency of the strengthened beam suddenly decreases at the initiation of cracking and then remains nearly constant while natural frequency of the unstrengthened beam decreases continuously as the beam experiences concrete cracking and reinforcement yielding.

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Crossref · 10.1177/1475921706057985

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Authors
Chen, G., Yang, X., Ying, X., & Nanni, A.
Affiliations
  • Missouri University of Science and Technology (US)
  • Modjeski and Masters, Inc., 804 N. First Street, St. Louis, MO 63102, USA
Venue
Structural Health Monitoring
Published
2006-06
Volume
5
Issue
2
Pages
125-141
ISSN
  • 1475-9217 (ISSN-L)
  • 1741-3168
OpenAlex
W2033765736
Cited by
30
References
17
Citations by year
2025: 1 · 2023: 2 · 2021: 5 · 2020: 2 · 2019: 1 · 2018: 1 · 2016: 1 · 2015: 2 · 2014: 1 · 2013: 1 · 2012: 2
FWCI
11.63
Type
journal article
Language
en
Open access
closed
Locations
Structural Health Monitoring (publishedVersion)
Funders
  • National Science Foundation
  • University of Missouri
  • Missouri Department of Transportation
Topics
  • Physical Sciences › Engineering › Civil and Structural Engineering › Structural Health Monitoring Techniques
  • Physical Sciences › Engineering › Civil and Structural Engineering › Structural Engineering and Materials Analysis
  • Physical Sciences › Engineering › Control and Systems Engineering › Vibration and Dynamic Analysis
Keywords
damage detection, reinforced concrete beams, forced vibration, nonlinear vibration, transient response, damage index, FRP strengthening, externally bonded FRP sheets, concrete cracking, natural frequencies, reinforcement yielding, phenomenological model

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