The concept of contactless SHM stems from the premise
that we can characterize the condition state and observe
the behavior of structural systems using advancements
in image-based metrology. For condition assessment, the
image-based condition measurement techniques enable
the evaluation of observable features such as cracking
and spalling using pattern recognition, photogrammetry,
and laser scanning. The behavior measurements can
be derived using techniques such as digital image
correlation, structure for motion, and photogrammetry.
Once the condition state and behavior are described,
we are able to better understand the performance of a
structure at different stages of its life.
Recently, Harris has worked to establish a new fundamental area of research,
contactless SHM, that will allow advances in the area of existing infrastructure
preservation. This new direction leverages emerging advances in the area of noncontact metrology and has major implications for bridge engineering and other inservice structures, because it provides a mechanism for evaluating structural systems
in a low-cost and non-invasive manner, without disrupting service.
R E PRESEN TATI VE PUBLICAT IONS:
Gheitasi, A., and Harris, D.K. (2015) “Failure Characteristics and Ultimate Load-Carrying Capacity of
Redundant Composite Steel Girder Bridges: Case Study.” Journal of Bridge Engineering, 20(3), 05014012.
Vaghefi, K., Oats, R., Harris, D. K., Ahlborn, T. M., Brooks, C. N., Endsley, K. A., Roussi, C., Shuchman, R.,
Burns, J. W., Dobson, R. (2012). “Evaluation of Commercially Available Remote Sensors for Highway Bridge
Condition Assessment”. ASCE Journal of Bridge Engineering – Special Issues: Nondestructive Evaluation
and Testing for Bridge Inspection and Evaluation, 17(6), 886-895.
U.Va. ENGINEERING
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