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Structural Health Monitoring of Civil Infrastructure: from Research to Engineering Practice

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The ability to continuously monitor the integrity of civil infrastructure in real-time offers the opportunity to reduce maintenance and inspection costs, while providing for increased safety to the public. Furthermore, after natural disasters, it is imperative that emergency facilities and evacuation routes, including bridges and highways, be assessed for safety. Addressing all of these issues is the objective of structural health monitoring (SHM).

Smart sensors densely distributed over structures can provide rich information for structural health monitoring using their sensing, computational, and wireless communication capabilities. Though smart sensor technology has seen substantial advances during recent years, implementation of smart sensors on full-scale structures has been limited; interdisciplinary efforts to address issues in sensors, networks, and application specific algorithms have only now begun to germinate. Following an overview of these issues, a new paradigm for structural health monitoring employing a network of smart sensors will be presented. Because of its ability to meet the demands of data intensive applications such as SHM , MEMSIC’s Imote2 is adopted for this research. The system is deployed to monitor the Jindo Bridge, a cable-stayed bridge in South Korea with a 344m main span. This project constitutes the world’s largest deployment of wireless sensors to monitor civil infrastructure and signifies a new paradigm for structural health monitoring that is leading to dramatic improvements over existing capabilities.

This talk is part of the Centre for Smart Infrastructure & Construction series.

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