A James Clark School of Engineering
Education Ph.D., Polytechnic Institute of New York, 1980 Research Interests Physical and mechanical behavior of titanium alloys, stainless steels, and other structural materials, modeling microstructure evolution in multiphase systems, finite element modeling (FEM) of deformation and damping behavior of composite materials, biomedical implants. Current Research Projects Investigation of Thermal Aging Effects on the Evolution of Microstructure and Mechanical Properties of Cast Duplex Stainless Steels This research will provide a better understanding of the microstructural evolution and simultaneous change in mechanical response during aging. The results of the research will provide data that can be used to estimate degraded mechanical properties for an 80-year service life of light water reactors. Download the abstract (PDF) Graduate students interested in working in these areas ahould contact Professor S. Ankem at [email protected] The Study of Twinning and Oxygen Interstitial Interactions in Model Titanium Alloys We study the interactions between twins and interstitial elements, such as oxygen, in model titanium alloys through the use of atomistic computational materials science techniques. In our current work, we are using Density Functional Theory (DFT) calculations in the Vienna Ab initio Simulation Package (VASP) combined with the Modified Embedded Atom Method (MEAM) calculations in Large-scale Atomic/Molecular Massively Parallel Simulator (LAMMPS) to study the structural and thermodynamic characteristics of oxygen interstitials at the twins. By combining energy barrier calculations, structural calculations, and experimental tests we are seeking to better understand how oxygen interstitials impact twin growth. This will permit the future development of titanium alloys with improved mechanical properties. Teaching Professor Ankem regularly teaches or has taught the following courses: ENES 100: Introduction to Engineering Design ENMA 362: Mechanical Properties, with lab ENMA 461: Thermodynamics of Materials ENMA 464: Environmental Effects on Engineering Materials ENMA 471: Kinetics, Diffusion and Phase Transformations ENMA 472: Technology and Design of Engineering Materials ENMA 489A/698C: Design of Composite Materials ENMA 484/684: Advanced Finite Element Modeling (formerly 489F) ENRE 648L: Materials Selection and Mechanical Reliability ENMA 661: Kinetics of Reactions in Materials Honors and Awards Fellow of the American Society for Metals (FASM) (2001) 1996-97 George Kimball Burgess Memorial Award 1990 ASM International Materials Science Division Research Award ASM International – Indian Institute of Metals Lectureship for the year 1991 Professional Memberships ASM International, 1976-present. American Institute of Metallurgical Engineers, 1976-present. Member, MSD/ASM Materials Processing Committee, 1984-present. Member, TMS Titanium Committee, 1982-present. Chairman, Scholarship Committee of ASM International, Washington D.C Chapter, 1993-Present. Chairman of TMS Titanium committee, 2007-Present.
Physical and mechanical behavior of titanium alloys, stainless steels, and other structural materials, modeling microstructure evolution in multiphase systems, finite element modeling (FEM) of deformation and damping behavior of composite materials, biomedical implants.