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Professor Ingraffea leads the CFG

Tony Ingraffea presents multiscale polycrystal modeling at a recent DARPATech meeting

The Cornell Fracture Group members include Prof. Tony Ingraffea, research associates, and graduate students. The mission of the Cornell Fracture Group is to create, to verify, and to validate computational simulation systems for fracture control in engineered systems. An equally important focus of the group is education at all levels. The current and past research has focused on both experimental testing and numerical simulation of fatigue and fracture in a variety of materials.

The CFG research concentrates on computer simulation and physical testing of complex fracturing processes in materials ranging from rock to aerospace alloys. Experimental results are used as input data for developing a family of powerful systems for simulating crack propagation, based on finite- and boundary-element engines, and employing unique topological data structures and computer-visualization techniques. These systems are being used by the aerospace industry at Boeing, GE, Northrop Grumman, and Pratt and Whitney, by the petroleum industry at Schlumberger, Dowell, and Exxon, and by government agencies such as the FAA and NASA Langley and NASA Glenn Research Centers.

Some of the CFG's most recent research projects include: "Prognosis of Long-Term Load-Bearing Capability in Aerospace Structures," "A 3D Experimental and Numerical Study of Microstructurally-small Fatigue Crack Growth in an Aluminum Alloy," and the almost completed "Constellation University Institute Project."

Over the next five years, the CFG will be working to increase the understanding of crack growth in a variety of materials in order to improve the accuracy of the models used in the simulators. They are pursuing a "digital materials" approach in which they will be replacing phenomenology at the component scale with best-physics-based approaches at multiple, smaller scales. At the same time, they will be increasing efficiency by making massively parallel computing via Windows clusters and web-serviced componentization an integral part of simulation on the desktop.

For more information on the Cornell Fracture Group, please visit there website here.

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