The rapid growth in the smart sensor technology (SST) has enabled easier and more economic construction of the structural health monitoring system (SHM). Nevertheless, there is no distributed damage detection algorithm for efficient usage of the computation power of the SST. Therefore, this study aims at developing a new distributed damage detection algorithm suitable for the smart sensor system for the SHM. The algorithm suggested in this study utilizes the damping ratio of a structure, using the structure's energy dissipation ratio. In other words, each smart sensor installed to the structure analyzes the response signals from the structure into a damping ratio, which in turn is computed into an energy dissipation ratio, using the smart sensor's ability to handle data. Thus, this method detects the damages and locations of the damages in a structure using the changes in the energy dissipation ratio it has calculated. In this study proves the usefulness of the developed energy dissipation ratio by numerical simulation.

Date Published: 8 April 2008
PDF: 8 pages
Proc. SPIE 6932, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2008, 69323X (8 April 2008); doi: 10.1117/12.776041

Published in SPIE Proceedings Vol. 6932:
Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2008
Masayoshi Tomizuka, Editor(s)