Chad Anderson, PhD Candidate: A Physics-Based Approach To Quantitative Bridge Deck Thermography

Friday, May 5th
Noon, in Thornton Hall D221

Chad Anderson, PhD Candidate
Department of Civil and Environmental Engineering
University of Virginia

We live in a time where transportation infrastructure in this country is literally falling apart around us, with estimates of repair in the trillions of dollars nationwide. The research presented describes a novel and significant contribution to thermography of civil structures. Thermography is a technique by which temperature maps observed at the surface of an object are used to determine something about its subsurface characteristics.  Furthermore, when infrared (IR) camera technology is used to obtain the surface temperature data, traditional thermography is transformed into IR thermography, a non-contact, non-destructive evaluation (NDE) technique.  Research to expand the capabilities and usefulness of this technique is being conducted at the University of Virginia, Department of Civil and Environmental Engineering. One application of IR thermography, is the detection and characterization of defects which may lay beneath the surface of a roadway [concrete] bridge deck. Such defects include the debondment of overlay systems and horizontal delamination of the deck.  The research presented is the exploitation of time-lapse IR data, where a physics-based approach is applied to extract information from the time-lapse data. This approach represents a significant advancement in the state of the art, in that it permits not only the detection of the mentioned defects, but also the ability to quantify defect geometry and severity. The method developed is a novel and significant contribution in that it provides data that can be used as a basis for asset management and decision making.

This seminar is hosted by Professor Steve Chase.
See EVENTS for seminar details at www.cee.virginia.edu/calendar/