Real-time health monitoring of bridge structures using a reference-free damage detection algorithm

Soon Gie Lee; Gun Jin Yun

doi:10.1117/12.882097

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18 April 2011 Real-time health monitoring of bridge structures using a reference-free damage detection algorithm

Soon Gie Lee, Gun Jin Yun

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Proceedings Volume 7981, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2011; 79814X (2011) https://doi.org/10.1117/12.882097
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2011, San Diego, California, United States

Abstract

This paper proposes a continuous real-time structural health monitoring (SHM) and damage detection system. Wavelet packet decomposition (WPD) with a likelihood ratio was used for the damage sensitive indicator (DSI). A benchmark model updating structure instrumented with acceleration sensors was used for demonstration tests. A real-time reference-free damage detection algorithm is successfully implemented and verified using the benchmark test structure. The DSI based on WPD with a likelihood ratio algorithm showed consistency with two different damage scenarios. Furthermore, the application was web-published on a remote collaboratory site for remote access to a real-time structural health monitoring system.

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Soon Gie Lee and Gun Jin Yun "Real-time health monitoring of bridge structures using a reference-free damage detection algorithm", Proc. SPIE 7981, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2011, 79814X (18 April 2011); https://doi.org/10.1117/12.882097

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