Research Areas: Characterization Systems and Services
Biography: Joel A. Simpson is research scientist at Idaho National Laboratory involved in running and maintaining the servo-hydraulic creep-fatigue lab in support of multiple experimental test programs including the Next Generation Nuclear Plant, the Very High Temperature Reactor and Advanced Research Concepts. He is lab space coordinator in two mechanical test labs, responsible for the state of the lab, safety review, and facility modification interaction, working with management and other scientists. He holds a master’s in geology from University of California at Davis and a bachelor’s in geology and geophysics from University of Minnesota.
M.S., Geology - UC Davis
B.S., Geology - University of Minnesota
J. K. Wright, L. J. Carroll, J. A. Simpson and R. N. Wright, "Low Cycle Fatigue of Alloy 617 at 850 C and 950 C," Journal of Engineering Materials and Technology, vol. 135. July (2013), pp. 031005-1 - 031003-8.
J. K. Wright, L. J. Carroll, C. J. Cabet, T. Lillo, J. K. Benz, J. A. Simpson, W. R. Lloyd, J. A. Chapman, and
R. N. Wright, "Characterization of Elevated Temperature Properties of Heat Exchanger and Steam Generator Alloys," 251 Nuclear Engineering and Design, (2012) 252.
L.J. Carroll, W.R. Lloyd, J.A. Simpson, and R.N. Wright, "The Influence of Dynamic Strain Aging on Fatigue and Creep-Fatigue Characterization of Nickel-Base Solid Solution Strengthened Alloys," Materials at High Temperatures, vol. 27 no. 4, Jan. (2011), pp. 313-323
T.C. Totemeier, H. Tian, and J.A. Simpson, "Effect of Normalization Temperature on the Creep Strength of Modified 9Cr-1Mo Steel," Metallurgical and Materials Transactions A, vol. 37A (2006), pp.1519-1525.
T.C. Totemeier, J.A. Simpson, and H. Tian, "Effect of Weld Intercooling Temperature on the Structure and Impact Strength of Ferritic-Martensitic Steels," Materials Science and Engineering A, vol. 426 (2006), pp.323-331.
T.C. Totemeier, T.M. Lillo, and J.A. Simpson, "Elevated Temperature Strength of Fine- Grained INCONEL Alloy MA754," Metallurgical and Materials Transactions A, vol. 36A (2005), pp.2552-2555.
D. Xirouchakis, M.M. Hirschmann, and J.A. Simpson (2001), The effects of titanium on the silica content and on mineral-liquid partitioning of mantle-equilibrated melts. Geochim. Cosmochim. Acta 65, 2201-2217.
J. A. Simpson,* J. K. Wright,* R. N. Wright, "Novel Experiments to Characterize Creep-Fatigue Degradation in VHTR Alloys" Proceedings of the Structural Materials for Innovative Nuclear Systems Conference, Idaho Falls, Idaho October 7-9, (2013).
J.K. Wright, J.A. Simpson, R.N. Wright, L.J. Carroll, T.L. Sham, "Strain Rate Sensitivity or Alloys 800H and IN 617," Proceedings of the 2013 ASME Pressure Vessels & Piping Conference PVP2013, Paris, France, July 14 - 18, (2013).
R. N. Wright, "Characterization of Elevated Temperature Properties of Heat Exchanger and Steam Generator Alloys," Proceedings of HTR 2010, Prague, Czech Republic, (2010).