PI :  Kevin J. Hemker PhD (JHU), Tresa Pollock PhD (UCSB), Nancy Sottos PhD (UIUC)

Effective models of materials behavior can only be developed from accurate databases of constitutive material properties.  Micro-scale experiments will be used to facilitate collection of salient mechanical properties at appropriate temperatures and microstructural states.  Focused experiments will also be used to identify underlying mechanisms and provide the models developed in tasks A and C with the requisite fundamental physics, chemistry, and materials science. The models will be validated through comparison with key experiment observations and results.  The experimental piece of CEIMM implements existing and new methodologies and technologies to efficiently and quantitatively characterize relevant properties and microstructural responses over a range of operating conditions. In this way, experiments will be used to provide model parameters, validate key predictions, and supplement and extend the range of validity and reliability of the models.

Microstructural extreme analysis in 2-D 3300 grain dataset of Rene 88 DT: (a-h) grans of various sizes, clusters and Schmid factors under different loading directions.

Areas of interests includes

• Macro-tensile and fatigue testing
• Micro-tensile data for constitutive modeling and validation of plasticity models
• Micro-bending and micro-tensile fatigue testing with 3D full volume characterization
• Multiscale Characterization of High Performance Composites: Characterization of the