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Smart Structures and Systems Volume 16, Number 1, July 2015 , pages 223-242 DOI: https://doi.org/10.12989/sss.2015.16.1.223 |
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Damage detection on a full-scale highway sign structure with a distributed wireless sensor network |
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Zhuoxiong Sun, Sriram Krishnan, Greg Hackmann, Guirong Yan, Shirley J. Dyke, Chenyang Lu and Ayhan Irfanoglu
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| Abstract | ||
| Wireless sensor networks (WSNs) have emerged as a novel solution to many of the challenges of structural health monitoring (SHM) in civil engineering structures. While research projects using WSNs are ongoing worldwide, implementations of WSNs on full-scale structures are limited. In this study, a WSN is deployed on a full-scale 17.3m-long, 11-bay highway sign support structure to investigate the ability to use vibration response data to detect damage induced in the structure. A multi-level damage detection strategy is employed for this structure: the Angle-between-String-and-Horizon (ASH) flexibility-based algorithm as the Level I and the Axial Strain (AS) flexibility-based algorithm as the Level II. For the proposed multi-level damage detection strategy, a coarse resolution Level I damage detection will be conducted first to detect the damaged region(s). Subsequently, a fine resolution Level II damage detection will be conducted in the damaged region(s) to locate the damaged element(s). Several damage cases are created on the full-scale highway sign support structure to validate the multi-level detection strategy. The multi-level damage detection strategy is shown to be successful in detecting damage in the structure in these cases. | ||
| Key Words | ||
| multi-level damage detection; full scale structure; wireless sensor network | ||
| Address | ||
| Zhuoxiong Sun and Sriram Krishnan: School of Mechanical Engineering, Purdue University, USA Greg Hackmann and Chenyang Lu: Department of Computer Science and Engineering, Washington University in St. Louis, USA Guirong Yan: Department of Civil Engineering, University of Texas at El Paso, USA Shirley J. Dyke: School of Mechanical Engineering, Purdue University, USA; School of Civil Engineering, Purdue University, USA Ayhan Irfanoglu: School of Civil Engineering, Purdue University, USA | ||