Buy article PDF
The purchased file will be sent to you
via email after the payment is completed.
US$ 35
|
Smart Structures and Systems Volume 5, Number 1, January 2009 , pages 43-54 DOI: https://doi.org/10.12989/sss.2009.5.1.043 |
|
|
|
A decentralized approach to damage localization through smart wireless sensors |
||
Min-Joong Jeong and Bong-Hwan Koh
|
||
| Abstract | ||
| This study introduces a novel approach for locating damage in a structure using wireless sensor system with local level computational capability to alleviate data traffic load on the centralized computation. Smart wireless sensor systems, capable of iterative damage-searching, mimic an optimization process in a decentralized way. The proposed algorithm tries to detect damage in a structure by monitoring abnormal increases in strain measurements from a group of wireless sensors. Initially, this clustering technique provides a reasonably effective sensor placement within a structure. Sensor clustering also assigns a certain number of master sensors in each cluster so that they can constantly monitor the structural health of a structure. By adopting a voting system, a group of wireless sensors iteratively forages for a damage location as they can be activated as needed. Since all of the damage searching process occurs within a small group of wireless sensors, no global control or data traffic to a central system is required. Numerical simulation demonstrates that the newly developed searching algorithm implemented on wireless sensors successfully localizes stiffness damage in a plate through the local level reconfigurable function of smart sensors. | ||
| Key Words | ||
| damage detection; wireless sensor network; voting system; clustering technique. | ||
| Address | ||
| Min-Joong Jeong; Supercomputing Application Team, Korea Institute of Science and Technology Information, Daejeon, Korea Bong-Hwan Koh; Department of Mechanical Engineering, Dongguk University, 3-26 Pil-dong, Chung-gu, Seoul 100-715, Korea | ||