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Two-Stage Structural Health Monitoring Approach for Phase I Benchmark Studies

Yuen, Ka-Veng and Au, Siu Kui and Beck, James L. (2004) Two-Stage Structural Health Monitoring Approach for Phase I Benchmark Studies. Journal of Engineering Mechanics, 130 (1). pp. 16-33. ISSN 0733-9399.

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This paper presents a two-stage structural health monitoring methodology and applies it to the Phase I benchmark study sponsored by the IASC-ASCE Task Group on Structural Health Monitoring. In the first stage, modal parameters are identified using measured structural response from the undamaged system and then from the (possibly) damaged system. In the second stage, these data are used to update a parametrized structural model of the system using Bayesian system identification. The approach allows one to obtain not only estimates of the stiffness parameters but also the probability that damage in any substructure exceeds any specified threshold expressed in terms of a fractional stiffness loss. It successfully identifies the location and severity of damage in all cases of the benchmark problem.

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Additional Information:©ASCE. The manuscript for this paper was submitted for review and possible publication on December 27, 2001; approved on October 11, 2002. Part of this work was prepared when the first two writers were at graduate standing at the California Institute of Technology. This institution’s generous financial support is gratefully acknowledged.
Subject Keywords:Damage assessment; Bench marks; Bayesian analysis; Structural safety.
Record Number:CaltechAUTHORS:20120829-115334989
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Official Citation: Yuen, K., Au, S., and Beck, J. (2004). ”Two-Stage Structural Health Monitoring Approach for Phase I Benchmark Studies.” J. Eng. Mech., 130(1), 16–33. doi: 10.1061/(ASCE)0733-9399(2004)130:1(16)
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:33660
Deposited By: Carmen Nemer-Sirois
Deposited On:30 Aug 2012 18:34
Last Modified:24 Feb 2014 19:10

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