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Research
Interests
Dr.
Predebon's research includes mechanical behavior, characterization
and processing of ceramics, shock deformation including microstructural
effects and dynamic fracture of metals and ceramics, impact phenomena,
computer simulation of wave phenomena, explosive-metal interaction
and fragmentation. His research usually involves experimental, analytical,
and computational elements.
Dr.
Predebon's research in mechanical behavior and processing of alumina
has recently resulted in two patents. This newly developed alumina
has exceptional compressive and tensile strength properties which
increase with strain rate. It has also increased toughness. It has
an enhanced dynamic yield strength (Hugoniot Elastic Limit) and
spall strength. Potential applications being considered are ceramic
cutting tools, engine components (pistons, valves, etc.), bioceramics,
electronic structures, and armor.
Publications
- Staehler,
J.M., Predebon, W. W., Pletka, B. J., and Subhash, G., “Micromechanisms
of Deformation in High-Purity Hot-Pressed Alumina,” Material
Science and Engineering Journal A291, pp. 37-45, 2000.
- Lankford,
J., Predebon, W. W., Staehler, J. M., Subhash, G., Pletka, B.
J., and Anderson, C. L., “The Role of Plasticity as a Limiting
Factor in the Compressive Failure of High Strength Ceramics,”
Mechanics of Materials Journal 29, pp. 205-18, 1998.
- Staehler,
J. M., Predebon, W. W., Pletka, B. J., and Subhash, G., “Strain-Rate
Effects in High-Purity Alumina,” JOM, 47, No. 5, pp.
60-63, 1995.
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