Structural Monitoring and Adaptive Structures

RESEARCH AND DEVELOPMENT

Structural monitoring with wireless sensor networks

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In the past decade, wireless sensor networks (WSNs) have emerged as an innovative structural monitoring technology. Their advantages such as rapid deployment, ease of scalability, and self-configuration allow to reduce the costs, to increase the flexibility, and to simplify the operability of monitoring. These advantages are weakened by the power limitations that impose energy saving mechanisms such as low power hardware, duty-cycle operation, and multi-hop communication with low power protocols for achieving long term running periods of the sensor nodes. For data intensive applications (vibrations, fatigue), however, these energy saving mechanaisms are insufficient. In-node data processing, which is much more energy efficient than data communication, has the beneficial effect to significantly extend the running periods and to increase the system reliability by dramatically reducing the data communication.
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Contact: Dr. Glauco Feltrin

Distributed mitigation of wind-induced vibrations in long-span bridges
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The past two decades has seen significant construction of long-span, cable supported bridges in many parts of Asia and Europe. The increase in the span length of the bridges has resulted in a remarkable decrease in their stiffness and natural frequencies. Due to low structural damping and relatively low mass, long-span bridges become very susceptible to vibrations caused by strong winds.

Contact: Dr. Glauco Feltrin