Highway Bridge Research Center final report : phase I.
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2005-01-01
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Abstract:The objective of this research was to demonstrate the effectiveness and feasibility of nondestructive testing and monitoring techniques for highway bridges. The work included: fiber optic sensor development where photonics instruments, fiber optic splicing and repair equipment and qualified fiber optics technicians enabled the preparation and installation of fiber optic sensor networks; evaluation of commercial systems including weigh in motion (WIM); the construction of prototype systems as needed; the preparation of sets of guidelines for installation of fiber optic sensors on existing bridges and new bridges; evaluation of commercially-available software for combining individual digital images of a bridge site into a single panoramic image and for subsequently viewing it; evaluation of commercially-available PC-based software and digital technology for obtaining high resolution images of structures and processing them into three-dimensional computer models to provide information such as vertical and horizontal clearances or dead and live load deflections; and evaluation of the performance of high frequency (>50 kHz) Rayleigh wave ultrasonics generated by piezoelectric transducers to characterize near-surface microcracking.
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