Utilization of Dynamic and Static Sensors for Monitoring Infrastructures
Utilization of Dynamic and Static Sensors for Monitoring Infrastructures
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Date
2018-12-12
Authors
Fu, Chung C.
Zhu, Yifan
Hou, Kuang-Yuan
Advisor
Citation
Chung C. Fu, Yifan Zhu and Kuang-Yuan Hou (January 24th 2019). Utilization of Dynamic and Static Sensors for Monitoring Infrastructures, Advanced Remote Sensing Technology for Synthetic Aperture Radar Applications, Tsunami Disasters, and Infrastructure, Maged Marghany, IntechOpen, DOI: 10.5772/intechopen.83500. Available from: https://www.intechopen.com/books/advanced-remote-sensing-technology-for-synthetic-aperture-radar-applications-tsunami-disasters-and-infrastructure/utilization-of-dynamic-and-static-sensors-for-monitoring-infrastructures
DRUM DOI
Abstract
Infrastructures, including bridges, tunnels, sewers, and telecommunications,
may be exposed to environmental-induced or traffic-induced deformation and
vibrations. Some infrastructures, such as bridges and roadside upright structures,
may be sensitive to vibration and displacement where several different types of
dynamic and static sensors may be used for their measurement of sensitivity to
environmental-induced loads, like wind and earthquake, and traffic-induced loads,
such as passing trucks. Remote sensing involves either in situ, on-site, or airborne
sensing where in situ sensors, such as strain gauges, displacement transducers,
velometers, and accelerometers, are considered conventional but more durable and
reliable. With data collected by accelerometers, time histories may be obtained,
transformed, and then analyzed to determine their modal frequencies and shapes,
while with displacement and strain transducers, structural deflections and internal
stress distribution may be measured, respectively. Field tests can be used to characterize
the dynamic and static properties of the infrastructures and may be further
used to show their changes due to damage. Additionally, representative field applications
on bridge dynamic testing, seismology, and earthborn/construction vibration
are explained. Sensor data can be analyzed to establish the trend and ensure
optimal structural health. At the end, five case studies on bridges and industry
facilities are demonstrated in this chapter.
Notes
Partial funding for Open Access provided by the UMD Libraries' Open Access Publishing Fund.