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Washington State University Institute for Shock Physics

Faculty

Stefan Turneaure

Senior Scientist

(509) 335-1834

Scientific Interests and Work

Dynamic compression of solids at continuum to microscopic length scales.

Dr. Turneaure’s work focuses on understanding changes in solids at both the continuum and lattice levels caused by impact loading. Completed work includes experiments on bulk amorphous alloys, which resulted in a continuum model for the elastic-plastic response of this material; x-ray diffraction on shocked solids at a synchrotron facility to gain insight into microstructural evolution during shock compression; the use of x-ray diffraction to determine the strength of shocked crystals; and x-ray diffraction on KCl to understand shock-induced solid-solid phase transformations.  Ongoing work emphasizes the importance of simultaneously obtaining both continuum data (velocity interferometry) and lattice level data (x-ray diffraction) to better understand the response of shocked solids; one such current project is focused on understanding inelastic deformation, strength and phase transformation in Si shock compressed along different crystallographic directions.

Background

After receiving his B.S. in physics at Harvey Mudd College he joined Dr. Lemberger’s research group at Ohio State University. There he studied thin film superconductors in order to explore the effects of thermal fluctuations in suppressing superconducitivity.  In 2000, Stefan joined the Graduate Program in Acoustics at Pennsylvania State University where he worked in the field of physical acoustics with Dr. Keolian and designed, built, and characterized a thermoacoustic engine. Stefan joined the Institute for Shock Physics in 2002 where he now applies his experiences in both solid state physics and in acoustics to study shock compressed solids.

Education

Ph.D. (Physics), 1999, Ohio State University, Columbus, Ohio
B.S. (Physics), 1993, Harvey Mudd College, Claremont, California

Honors and Recognition

  • Ohio State University Presidential Fellowship, Ohio State University 1998-1999
  • National Needs Fellowship, Ohio State University, 1993-1994

Representative Publications

  1. S. J. Turneaure, J. M. Winey and Y. M. Gupta, “Compressive shock wave response of a Zr-based bulk amorphous alloy.” Appl. Phys. Lett. 84, 1692 (2004).
  2. S. J. Turneaure and Y. M. Gupta, “Inelastic Deformation and Phase Transformation of Shock Compressed Silicon Single Crystals.” Appl. Phys. Lett. 91, 201913 (2007).
  3. S. J. Turneaure, Y. M. Gupta and P. Rigg, “Shock Induced Phase Change in KCl Single Crystals: Orientation Relations between the B1 and B2 Lattices.” J. Appl. Phys. 105, 013544 (2009).
  4. S. J. Turneaure, Y. M. Gupta, K. Zimmerman, K. Perkins, C. S. Yoo, G. Shen, “Real Time Microstructure of Shocked LiF Crystals: Use of Synchrotron X-Rays.” J. Appl. Phys. 105, 053520 (2009).
  5. S. J. Turneaure and Y. M. Gupta, “Real-time microstructure of shock-compressed single crystals from X-ray diffraction line profiles.” J. Appl. Cryst. 44, 574 (2011).
  6. S. J. Turneaure and Y. M. Gupta, “Material strength determination in the shock compressed state using x-ray diffraction measurements.” J. Appl. Phys. 109, 123510 (2011).
  7. S. J. Turneaure and Y. M. Gupta, “Real-time x-ray diffraction at the impact surface of shocked crystals.” J. Appl. Phys. 111, 026101 (2012).