

Current Research:
Paul’s work involves developing and applying techniques to test and characterize mechanical behavior at small length scales. Advantages of testing at this scale include the ability to probe localized material properties (i.e. measure the ‘single-crystal’ response of individual grains in a polycrystalline material) and search for intrinsic size effects. Micron-scale mechanical test specimens are fabricated using a dual beam FIB microscope. These specimens are tested either with a nanoindenter or inside an SEM with a piezo based in-situ test rig. Subsequent characterization includes SEM analysis of slip band morphology, dual beam FIB serial sectioning of deformed structures, and TEM defect analysis. Presently, a single-crystal nickel based superalloy used in turbine blade applications is under investigation. Paul has had the opportunity to collaborate with several WPAFB scientists and technicians while conducting this work.
Paul has presented work at the following meetings:
-MS&T 2006, Cincinnati
-MRS 2006 Fall Meeting, Boston
-2007 International Workshop on Small Scale Plasticity, Braunwald, Switzerland