ANN-based damage detection technique using acceleration response of nonlinear structural systems

I. F. Choo, H. M. Koh, S. Kim

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Since civil structures degrade with time, their properties are changing from their construction leading to unavoidable uncertainties coupled with difficulties to model analytically their inherent nonlinearities. Detecting eventual damages or anomalies in structural properties appears thus as a daunting task using conventional analysis tools. Therefore, artificial neural networks represent a fair alternative to deal with such problems. A neural network-based approach is using directly measured dynamic responses is proposed to model the structure and, detect, locate and evaluate eventual damages that may occur in the structure. Detection is performed through the comparison of reconstructed restoring force loops and corresponding stiffness time histories for different stiffness degradation cases. Applications of the proposed ANN scheme on both shear building and seismically isolated bridge demonstrated the efficiency and accuracy of diagnosis. The proposed technique is believed to support further development in structural health monitoring using innovative measuring devices like MEMS-based sensors and wireless communication technologies.

Original languageEnglish
Title of host publicationStructural Health Monitoring and Intelligent Infrastructure - Proceedings of the 2nd International Conference on Structural Health Monitoring of Intelligent Infrastructure, SHMII 2005
Pages1081-1089
Number of pages9
StatePublished - 2006
Event2nd International Conference on Structural Health Monitoring of Intelligent Infrastructure, SHMII 2005 - Shenzhen, China
Duration: 16 Nov 200518 Nov 2005

Publication series

NameStructural Health Monitoring and Intelligent Infrastructure - Proceedings of the 2nd International Conference on Structural Health Monitoring of Intelligent Infrastructure, SHMII 2005
Volume2

Conference

Conference2nd International Conference on Structural Health Monitoring of Intelligent Infrastructure, SHMII 2005
Country/TerritoryChina
CityShenzhen
Period16/11/0518/11/05

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