Photo of Michael Tonks

Michael Tonks

Assistant Professor

Affiliation(s):

  • Mechanical and Nuclear Engineering
  • Nuclear Engineering
  • Mechanical Engineering

233 Reber Building

mrt5296@psu.edu

814-863-1323

Personal or Departmental Website

Research Areas:

Mechanical Sciences, Nuclear Power

Interest Areas:

Predicting the coevolution of microstructure and properties of materials in harsh environments, mesoscale computational materials science, computational methods

 
 

 

Education

  • BS, Mechanical Engineering, Brigham Young Univeristy, 2001
  • MS, Mechanical Engineering, Brigham Young University, 2002
  • Ph D, Mechanical Engineering, University of Illinois, Urbana-Champaign, 2008

Publications

Book, Chapters

  • Michael Tonks, KW Chase and CC Smith, 2007, Predicting deformation of compliant assemblies using covariant statistical tolerance analysis, Springer Netherlands, pp. 321–330

Journal Articles

  • L. Zhao, P. Chakraborty, Michael Tonks and I. Szlufarska, 2017, "On the plastic driving force of grain boundary migration: A fully coupled phase field and crystal plasticity model", Computational Materials Science, 128, pp. 320 - 330
  • GA Vetterick, O El-Atwani, J Kevin Baldwin, Michael Tonks and ML Taheri, 2016, "Quantification of void pinning effects during grain growth of nanocrystalline iron", Journal of Nuclear Materials, 481, pp. 62–65
  • Jacob Bair, Mohsen Asle Zaeem and Michael Tonks, 2016, "A phase-field model to study the effects of temperature change on shape evolution of ?-hydrides in zirconium", Journal of Physics D: Applied Physics, 49, (40)
  • Yongfeng Zhang, Xian-Ming Bai, Jianguo Yu, Michael Tonks, Mark J Noordhoek and Simon R Phillpot, 2016, "Homogeneous hydride formation path in a-Zr: Molecular dynamics simulations with the charge-optimized many-body potential", Acta Materialia, 111, pp. 357–365
  • Xian-Ming Bai, Michael Tonks, Yongfeng Zhang and Jason D Hales, 2016, "Multiscale modeling of thermal conductivity of high burnup structures in UO2 fuels", Journal of Nuclear Materials, 470, pp. 208–215
  • Cody J Permann, Michael Tonks, Bradley Fromm and Derek R Gaston, 2016, "Order parameter re-mapping algorithm for 3D phase field model of grain growth using FEM", Computational Materials Science, 115, pp. 18–25
  • Michael Tonks, Xiang-Yang Liu, David Andersson, Danielle Perez, Aleksandr Chernatynskiy, Giovanni Pastore, Christopher R Stanek and Richard Williamson, 2016, "Development of a multiscale thermal conductivity model for fission gas in UO2", Journal of Nuclear Materials
  • Pritam Chakraborty, Yongfeng Zhang and Michael Tonks, 2016, "Multi-scale modeling of microstructure dependent intergranular brittle fracture using a quantitative phase-field based method", Computational Materials Science, 113, pp. 38–52
  • Jacob Bair, Mohsen Asle Zaeem and Michael Tonks, 2015, "A review on hydride precipitation in zirconium alloys", Journal of Nuclear Materials, 466, pp. 12–20
  • J. D. Hales, Michael Tonks, F. N. Gleicher, B. W. Spencer, S. R. Novascone, R. L. Williamson, G. Pastore and D. M. Perez, 2015, "Advanced multiphysics coupling for LWR fuel performance analysis", Annals of Nuclear Energy, 84, pp. 98-110
  • Derek R. Gaston, Cody J. Permann, John W. Peterson, Andrew E. Slaughter, David Andrs, Yaqi Wang, Michael P. Short, Danielle M. Perez, Michael Tonks, Javier Ortensi, L. Zou and R. C. Martineau, 2015, "Physics-based multiscale coupling for full core nuclear reactor simulation", Annals of Nuclear Energy, 84, pp. 45-54
  • David A Andersson, Michael Tonks, Luis Casillas, Shyam Vyas, Pankaj Nerikar, Blas P Uberuaga and Christopher R Stanek, 2015, "Multiscale simulation of xenon diffusion and grain boundary segregation in UO2", Journal of Nuclear Materials, 462, pp. 15–25
  • Michael Tonks, Yongfeng Zhang, Aaron Butterfield and Xian-Ming Bai, 2015, "Development of a grain boundary pinning model that considers particle size distribution using the phase field method", Modelling and Simulation in Materials Science and Engineering, 23, (4), pp. 045009
  • Yongfeng Zhang, Paul C Millett, Michael Tonks, Xian-Ming Bai and S Bulent Biner, 2015, "Preferential Cu precipitation at extended defects in BCC Fe: An atomistic study", Computational Materials Science, 101, pp. 181–188
  • JD Hales, Michael Tonks, K Chockalingam, DM Perez, Novascone, SR, BW Spencer and RL Williamson, 2015, "Asymptotic expansion homogenization for multiscale nuclear fuel analysis", Computational Materials Science, 99, pp. 290–297
  • Yongfeng Zhang, Xian-Ming Bai, Michael Tonks and S. Bulent Biner, 2015, "Formation of prismatic loops from C15 Laves phase interstitial clusters in body-centered cubic iron", Scripta Materialia, 98, pp. 5–8
  • Xian-Ming Bai, Yongfeng Zhang and Michael Tonks, 2015, "Testing thermal gradient driving force for grain boundary migration using molecular dynamics simulations", Acta Materialia, 85, pp. 95–106
  • Melissa C. Teague, Bradley S. Fromm, Michael Tonks and David P. Field, 2014, "Using coupled mesoscale experiments and simulations to investigate high burn-up oxide fuel thermal conductivity", JOM, 66, (12), pp. 2569–2577
  • Pritam Chakraborty, Michael Tonks and Giovanni Pastore, 2014, "Modeling the influence of bubble pressure on grain boundary separation and fission gas release", Journal of Nuclear Materials, 452, (1), pp. 95–101
  • Yongfeng Zhang, Paul C. Millett, Michael Tonks, Xian-Ming Bai and S. Bulent Biner, 2014, "Molecular dynamics simulations of intergranular fracture in UO2 with nine empirical interatomic potentials", Journal of Nuclear Materials, 452, (1), pp. 296–303
  • D. A. Andersson, P. Garcia, X.-Y. Liu, G. Pastore, Michael Tonks, P. Millett, B. Dorado, D. R. Gaston, D. Andrs, R. L. Williamson, R. C. Martineau, B. P. Uberuaga and C. R. Stanek, 2014, "Atomistic modeling of intrinsic and radiation-enhanced fission gas (Xe) diffusion in UO2+-x: Implications for nuclear fuel performance modeling", Journal of Nuclear Materials, 451, (1), pp. 225–242
  • Melissa Teague, Michael Tonks, Stephen Novascone and Steven Hayes, 2014, "Microstructural modeling of thermal conductivity of high burn-up mixed oxide fuel", Journal of Nuclear Materials, 444, (1), pp. 161–169
  • Michael Tonks, Yongfeng Zhang, Xianming Bai and Paul C. Millett, 2014, "Demonstrating the temperature gradient impact on grain growth in UO2 using the phase field method", Materials Research Letters, 2, (1), pp. 23–28
  • Xian-Ming Bai, Yongfeng Zhang and Michael Tonks, 2013, "Strain effects on oxygen transport in tetragonal zirconium dioxide", Physical Chemistry Chemical Physics, 15, (44), pp. 19438–19449
  • Paul C. Millett, Yongfeng Zhang, Michael Tonks and S. B. Biner, 2013, "Consideration of grain size distribution in the diffusion of fission gas to grain boundaries", Journal of Nuclear Materials, 440, (1), pp. 435–439
  • Michael Tonks, Paul C. Millett, Pankaj Nerikar, Shiyu Du, David Andersson, Christopher R. Stanek, Derek Gaston, David Andrs and Richard Williamson, 2013, "Multiscale development of a fission gas thermal conductivity model: Coupling atomic, meso and continuum level simulations", Journal of Nuclear Materials, 440, (1), pp. 193–200
  • Paul C. Millett, Michael Tonks, K. Chockalingam, Yongfeng Zhang and S. B. Biner, 2013, "Three dimensional calculations of the effective Kapitza resistance of UO2 grain boundaries containing intergranular bubbles", Journal of Nuclear Materials, 439, (1), pp. 117–122
  • K. Chockalingam, Michael Tonks, J. D. Hales, D. R. Gaston, P. C. Millett and Liangzhe Zhang, 2013, "Crystal plasticity with Jacobian-Free Newton–Krylov", Computational Mechanics, 51, (5), pp. 617–627
  • Liangzhe Zhang, Michael Tonks, Derek Gaston, John W. Peterson, David Andrs, Paul C. Millett and Bulent S. Biner, 2013, "A quantitative comparison between C0 and C1 elements for solving the Cahn–Hilliard equation", Journal of Computational Physics, 236, pp. 74–80
  • Michael Tonks, Yongfeng Zhang, S. B. Biner, Paul C. Millett and Xianming Bai, 2013, "Guidance to design grain boundary mobility experiments with molecular dynamics and phase-field modeling", Acta Materialia, 61, (4), pp. 1373–1382
  • Paul C. Millett, Yongfeng Zhang, DA Andersson, Michael Tonks and SB Biner, 2012, "Random-walk Monte Carlo simulation of intergranular gas bubble nucleation in UO2 fuel", Journal of Nuclear Materials, 430, (1), pp. 44–49
  • Yongfeng Zhang, Xiang-Yang Liu, Paul C. Millett, Michael Tonks, David A. Andersson and Bulent Biner, 2012, "Crack tip plasticity in single crystal UO 2: Atomistic simulations", Journal of Nuclear Materials, 430, (1), pp. 96–105
  • K. Chockalingam, Paul C. Millett and Michael Tonks, 2012, "Effects of intergranular gas bubbles on thermal conductivity", Journal of Nuclear Materials, 430, (1), pp. 166–170
  • Y. Zhang, P. C. Millett, Michael Tonks and S. B. Biner, 2012, "Deformation twins in nanocrystalline body-centered cubic Mo as predicted by molecular dynamics simulations", Acta Materialia, 60, (18), pp. 6421-6428
  • Derek Gaston, Luanjing Guo, Glen Hansen, Hai Huang, Richard Johnson, HyeongKae Park, Robert Podgorney, Michael Tonks and R. Williamson, 2012, "Parallel algorithms and software for nuclear, energy, and environmental applications. Part II: Multiphysics algorithms", Communications in Computational Physics, 12, (3), pp. 807-833
  • Derek Gaston, Luanjing Guo, Glen Hansen, Hai Huang, Richard Johnson, Dana Knoll, Chris Newman, HyeongKae Park, Robert Podgorney, Michael Tonks and R. Williamson, 2012, "Parallel algorithms and software for nuclear, energy, and environmental applications. Part II: Multiphysics software", Communications in Computational Physics, 12, (3), pp. 834-865
  • Yongfeng Zhang, Paul C. Millett, Michael Tonks, Liangzhe Zhang and Bulent Biner, 2012, "Molecular dynamics simulations of He bubble nucleation at grain boundaries", Journal of Physics: Condensed Matter, 24, (30), pp. 305005
  • Paul C Millett, Michael Tonks, SB Biner, Liangzhe Zhang, K Chockalingam and Yongfeng Zhang, 2012, "Phase-field simulation of intergranular bubble growth and percolation in bicrystals", Journal of Nuclear Materials, 425, (1), pp. 130–135
  • Paul C. Millett, Michael Tonks and S. B. Biner, 2012, "Grain boundary percolation modeling of fission gas release in oxide fuels", Journal of Nuclear Materials, 424, (1), pp. 176–182
  • R. L. Williamson, J. D. Hales, S. R. Novascone, Michael Tonks, D. R. Gaston, C. J. Permann, D. Andrs and R. C. Martineau, 2012, "Multidimensional multiphysics simulation of nuclear fuel behavior", Journal of Nuclear Materials, 423, (1), pp. 149–163
  • Liangzhe Zhang, Michael Tonks, Paul C. Millett, Yongfeng Zhang, Karthikeyan Chockalingam and Bulent Biner, 2012, "Phase-field modeling of temperature gradient driven pore migration coupling with thermal conduction", Computational Materials Science, 56, pp. 161–165
  • Paul C. Millett, Michael Tonks and S. B. Biner, 2012, "Mesoscale modeling of intergranular bubble percolation in nuclear fuels", Journal of Applied Physics, 111, (8), pp. 083511
  • Yongfeng Zhang, Hanchen Huang, Paul C. Millett, Michael Tonks, Dieter Wolf and Simon R. Phillpot, 2012, "Atomistic study of grain boundary sink strength under prolonged electron irradiation", Journal of Nuclear Materials, 422, (1), pp. 69–76
  • J. D. Hales, Novascone, SR, R. L. Williamson, D. R. Gaston and Michael Tonks, 2012, "Solving nonlinear solid mechanics problems with the Jacobian-free Newton Krylov method", Computer Modeling in Engineering & Sciences(CMES), 84, (2), pp. 123–153
  • Michael Tonks, Derek Gaston, Paul C. Millett, David Andrs and Paul Talbot, 2012, "An object-oriented finite element framework for multiphysics phase field simulations", Computational Materials Science, 51, (1), pp. 20–29
  • Yongfeng Zhang, Paul C. Millett, Michael Tonks and Bulent Biner, 2012, "Deformation-twin-induced grain boundary failure", Scripta Materialia, 66, (2), pp. 117–120
  • Yongfeng Zhang, Paul C. Millett and Michael Tonks, 2011, "Energetics and diffusional properties of He in BCC Mo: An empirical potential for molecular dynamics simulations", Computational Materials Science, 50, (11), pp. 3224–3229
  • Paul C. Millett and Michael Tonks, 2011, "Application of phase-field modeling to irradiation effects in materials", Current Opinion in Solid State and Materials Science, 15, (3), pp. 125–133
  • Paul C. Millett and Michael Tonks, 2011, "Phase-field simulations of gas density within bubbles in metals under irradiation", Computational Materials Science, 50, (7), pp. 2044 - 2050
  • Michael Tonks and Paul Millett, 2011, "Phase field simulations of elastic deformation-driven grain growth in 2D copper polycrystals", Materials Science and Engineering: A, 528, (12), pp. 4086–4091
  • Paul C. Millett and Michael Tonks, 2011, "Meso-scale modeling of the influence of intergranular gas bubbles on effective thermal conductivity", Journal of Nuclear Materials, 412, (3), pp. 281–286
  • Paul C Millett, Anter El-Azab, Srujan Rokkam, Michael Tonks and Dieter Wolf, 2011, "Phase-field simulation of irradiated metals: Part I: Void kinetics", Computational materials science, 50, (3), pp. 949–959
  • Michael Tonks, Paul Millett, Wei Cai and Dieter Wolf, 2010, "Analysis of the elastic strain energy driving force for grain boundary migration using phase field simulation", Scripta Materialia, 63, (11), pp. 1049–1052
  • Michael Tonks, Derek Gaston, Cody Permann, Paul Millett, Glen Hansen and Dieter Wolf, 2010, "A coupling methodology for mesoscale-informed nuclear fuel performance codes", Nuclear Engineering and Design, 240, (10), pp. 2877–2883
  • Tapan G. Desai, Paul Millett, Michael Tonks and Dieter Wolf, 2010, "Atomistic simulations of void migration under thermal gradient in UO2", Acta Materialia, 58, (1), pp. 330–339
  • Paul C. Millett, Srujan Rokkam, Anter El-Azab, Michael Tonks and Dieter Wolf, 2009, "Void nucleation and growth in irradiated polycrystalline metals: A phase-field model", Modelling and Simulation in Materials Science and Engineering, 17, (6), pp. 064003
  • Michael Tonks, John F. Bingert, Curt A. Bronkhorst, Eric N. Harstad and Daniel A. Tortorelli, 2009, "Two stochastic mean-field polycrystal plasticity methods", Journal of the Mechanics and Physics of Solids, 57, (8), pp. 1230–1253
  • Michael Tonks, G Hansen, D Gaston, C Permann, P Millett and D Wolf, 2009, "Fully-coupled engineering and mesoscale simulations of thermal conductivity in UO2 fuel using an implicit multiscale approach", Journal of Physics: Conference Series, 180, (1), pp. 012078
  • Michael Tonks, A. J. Beaudoin, Frank Schilder and D. A. Tortorelli, 2008, "Investigation of preferred orientations in planar polycrystals", Journal of Applied Mechanics, 75, (5), pp. 051001
  • Michael Tonks, E. N. Harstad, P. F. Maudlin and C. P. Trujillo, 2008, "A design of inverse Taylor projectiles using material simulation", Modelling and Simulation in Materials Science and Engineering, 16, pp. 015005

Conference Proceedings

  • Michael Tonks and Ken W Chase, 2004, "Covariance modeling method for use in compliant assembly tolerance analysis", ASME 2004 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference, pp. 49–55

Research Projects

  • October 2016 - September 2019, "Coupled Experimental and Simulation Approach to Investigate the Impact of Grain Growth, Amorphization, and Grain Subdivision in Accident Tolerant U3Si2 Light Water Reactor Fuel," (Sponsor: Nuclear Energy University Partnership).
  • December 2015 - September 2018, "Development of a Synergistic Approach to Study Irradiated Materials Using Coupled Experiments and Simulation," (Sponsor: Idaho National Laboratory).
  • October 2015 - September 2018, "Multilayer Composite Fuel Cladding for LWR Performance Enhancement and Severe Accident Tolerance," (Sponsor: Nuclear Energy University Program).
  • October 2015 - September 2018, "Radiation-induced swelling and microcracking in SiC cladding for LWRs," (Sponsor: Nuclear Energy University Programs).
  • October 2015 - September 2018, "Thermal Transport and Fracture Behavior of Sintered Fuel Pellets: Experimental Validation of NEAMS Tool MARMOT," (Sponsor: Nuclear Energy University Programs).
  • October 2015 - September 2018, "Development of Accident Tolerant Fuel Options For Near Term Applications," (Sponsor: Nuclear Energy University Programs).
  • October 2015 - September 2018, "Development of Macroscale Models of UO2 Fuel Sintering and Densification using Multiscale Modeling and Simulation," (Sponsor: Idaho National Laboratory).
  • October 2016 - September 2017, "Development of a fully validated quantitative model of hydride morphology in zirconium alloy nuclear fuel cladding," (Sponsor: Idaho National Laboratory and the NEAMS program).
  • January 2017 - December 2017, "Initial Multiscale Simulations of Nuclear Thermal Propulsion Fuel Elements," (Sponsor: NASA).
  • June 2016 - December 2016, "Multi-physics tool for predicting fatigue crack propagation using Phase field models," (Sponsor: Navy Small Business Technology Transfer Research Program).
  • November 2015 - June 2016, "Developing a 3D Microstructure Reconstruction Capability in the Materials Computation Center," (Sponsor: PSU Materials Computation Center).

Honors and Awards

  • Presidential Early Career Award for Scientists and Engineers, US Office of Science and Technology Policy within the Executive Office of the President, January 2017
  • 2015 Special Achievement Award, ANS Materials Science and Technology Division:, June 2016
  • TMS SMD Young Leader Professional Development Award, TMS, 2014
  • INL Science and Technology Deputy Laboratory Director Human Capital Award, Idaho National Laboratory, 2014
  • US DOE Nuclear Energy Advanced Modeling and Simulation Program Excellence Award, US Department of Energy, December 2014
  • INL Early Career Exceptional Achievement Laboratory Award, Idaho National Laboratory, 2014
  • INL Laboratory Director Award, Idaho National Laboratory, 2013
  • INL Laboratory Director Award, Idaho National Laboratory, 2013
  • INL Exceptional Contributions Program Award, Idaho National Laboratory, 2012
  • INL Exceptional Contributions Program Award, Idaho National Laboratory, 2011
  • INL Laboratory Director Award, Idaho National Laboratory, 2011

Service

Service to Penn State:

  • Committee Member, Nuclear Engineering Program, Faculty Search Committee, October 2015 - February 2016
  • Committee Member, Department of Materials Science and Engineering, Faculty Search Committee, October 2015
  • Committee Member, Nuclear Engineering Program, Faculty Search Committee, September 2016
  • Committee Member, Committee Member, Nuclear Engineering Program, Reactor Safeguards Committee, January 2016

Service to External Organizations:

  • External Reviewer, Annual Review Committee, Consortium of Advanced Simulation of LWRs, August 2016 - January 2017
  • Organizer, Symposium Organizer, Metals, Minerals, and Materials Society General Meeting, February 2015 - February 2016
  • Organizer, Symposium Organizer, Materials Research Society Spring Meeting, February 2015 - March 2016
  • Organizer, Minisymposium organizer, US National Congress on Computational Mechanics, July 2014 - July 2015
  • Organizer, Symposium Organizer, International Conference on Multiscale Materials Modeling, October 2013 - October 2014
  • Organizer, Symposium Organizer, US National Congress on Computational Mechanics, July 2012 - July 2013
  • Committee Member, International Technical Program Committee, International Conference on Mathematics and Computational Methods Applied to Nuclear Science and Engineering, May 2012 - May 2013
  • Organizer, Symposium Organizer, World Congress on Computational Mechanics, July 2011 - July 2012
  • Organizer, Symposium Organizer, Materials Research Society Fall Meeting, December 2016
  • Organizer, Engineering Mechanics Institute Conference, Multi-scale modeling of microstructure and property evolution, June 2016
  • LeaderThe Organisation for Economic Co-operation and Development-Nuclear Energy Agency, Task force on the Unit mechanisms of gaseous fission product release, September 2014
  • Member, The Organisation for Economic Co-operation and Development-Nuclear Energy Agency, Expert Group on Multiscale Modeling of Fuels, May 2014
 


 

About

The Department of Mechanical and Nuclear Engineering at Penn State is one of the nation’s largest and most successful engineering departments. We serve more than 1,000 undergraduate students and more than 330 graduate students

We offer B.S. degrees in mechanical engineering and nuclear engineering as well as resident (M.S., Ph.D.) and online (M.S., M.Eng.) graduate degrees in nuclear engineering and mechanical engineering. MNE's strength is in offering hands-on experience in highly relevant research areas, such as energy, homeland security, biomedical devices, and transportation systems.

Department of Mechanical and Nuclear Engineering

137 Reber Building

The Pennsylvania State University

University Park, PA 16802-4400

Phone: 814-865-2519