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Smart Structures and Systems Volume 7, Number 5, May 2011 , pages 393-416 DOI: https://doi.org/10.12989/sss.2011.7.5.393 |
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Hybrid acceleration-impedance sensor nodes on Imote2- platform for damage monitoring in steel girderconnections |
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Jeong-Tae Kim, Jae-Hyung Park, Dong-Soo Hong and Duc-Duy Ho
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| Abstract | ||
| Hybrid acceleration-impedance sensor nodes on Imote2-platform are designed for damage monitoring in steel girder connections. Thus, the feasibility of the sensor nodes is examined about its performance for vibration-based global monitoring and impedance-based local monitoring in the structural systems. To achieve the objective, the following approaches are implemented. First, a damage monitoring scheme is described in parallel with global vibration-based methods and local impedance-based methods. Second, multi-scale sensor nodes that enable combined acceleration-impedance monitoring are described on the design of hardware components and embedded software to operate. Third, the performances of the multi-scale sensor nodes are experimentally evaluated from damage monitoring in a lab-scaled steel girder with bolted connection joints. | ||
| Key Words | ||
| acceleration; impedance; hybrid; structural health monitoring; Imote2 sensor platform; multiscale sensor node. | ||
| Address | ||
| Jeong-Tae Kim, Jae-Hyung Park, Dong-Soo Hong and Duc-Duy Ho: Department of Ocean Eng., Pukyong National University, Busan, Korea | ||