Jeffrey L. Evans, Ph.D.

Name

Jeffrey L. Evans, Ph.D.

Position

Assistant Professor,
Department of Mech. and Aerospace Engineering

Education

B.S., Metallurgical Engineering, University of Missouri in Rolla

M.S., Mechanical Engineering, University of Arkansas

Ph.D., Engineering, University of Arkansas

Areas of Expertise:

  • Mechanical behavior of materials
  • fatigue crack growth
  • fracture mechanics
  • high temperature materials
  • corrosion and oxidation behavior
  • reliability and component life prediction

Accomplishments in these Areas:

    1. Development of a comprehensive creep-fatigue crack growth model for Ni-base superalloys that incorporates the cycle-dependent processes and time dependent processes (e.g. diffusion of oxygen to the crack tip, oxidation kinetics, and creep deformation). The paper detailing these results received a Best Paper Award at ICF 12.
      - Evans, J.L. and Saxena, A., "Elevated Temperature Crack Growth Rate Model for Ni-base Superalloys," Proceedings of the 12 th International Conference on Fracture, Ottawa, Canada, July 12-17, 2009.
    2. Evaluation and identification of the coupling effect between microstructure and environment for the Ni-base superalloy ME3.
      - Evans, J.L. and Saxena, A., Rosenberger, A.H., "Effects of Environment and Microstructure on the Fatigue Crack Growth Rate of the Ni-Base Superalloy ME3", submitted to Metallurgical and Materials Transactions, currently in revision.
    3. Co-author of detailed review and critical assessment of crack nucleation and growth in Ni-base superalloys.
      - Findley, K.O., Saxena A., and Evans, J.L., "A Critical Assessment of Fatigue Crack Nucleation and Growth Models for Ni- and Ni,Fe-Base Superalloys" submitted to International Materials Reviews, to be published in 2010.
    4. Co-author of ASM Handbook article on Modeling Creep Fatigue.
      - Evans, J.L. and Saxena, A., "Modeling Creep Fatigue" in ASM Handbook Vol 22: Modeling and Simulation: Processing of Metallic Materials, David Furrer and Lee Semiatin, editors, ASM International, 2009.
    5. Development of a preliminary technique to analyze the prior thermal treatment of aluminum alloy 7075 through the evaluation of the fracture surface features.
      - Evans, J.L. "Thermal History and Tensile Strength Determination from Fracture Surface Analysis," Engineering Failure Analysis in press, doi: 10.1016/j.engfailanal.2009.10.022.