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    COLLOQUIUM OF THE COMPUTATIONAL MATERIALS SCIENCE CENTER
AND THE SCHOOL OF PHYSICS, ASTRONOMY, & COMPUTATIONAL SCIENCES
                           (CSI 898-Sec 001)
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Full Field 3D Displacement and Strain Measurements for Constitutive 
                     Material Characterization

                        Athanasios Iliopoulos
        Naval Research Laboratory, Washington D.C. and 
Computational Materials Science Center, George Mason University, VA

In order to overcome issues associated with traditional methods 
for full field displacement and strain measurement we introduced a 
new method that takes advantage of Mesh-Free representations of the
approximated fields under the name "Mesh-less Random Grid Method"
(MRGM). MRGM utilizes a pattern of randomly distributed dots
painted on a specimen surface and has been shown to be quite
accurate on both synthetic and real data. Its computational
efficiency allows for real-time applications and is at least 10-20
times faster than other popular methods.

Those advantages make MRGM an ideal tool for inverse methods on 
constitutive material characterization techniques that require 
accurate measurements and large volumes of data, either from a 
single experiment or from multiple experiments.

In this talk special emphasis will be given to presenting the MRGM 
for Full Field 3D Displacement and Strain measurement, its accuracy, 
computational performance and applicability in data-driven material 
characterization experiments via mechatronically automated robotic 
testing machines developed at the Naval Research Laboratory.

                      Monday, February 20, 2012
                              4:30 pm
                   Room 301, Research I, Fairfax Campus

Refreshments will be served at 4:15 PM.
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Find the schedule at http://www.cmasc.gmu.edu/seminar/schedule.html