He is a computational scientist at Idaho National Laboratory specializing in parallel, nonlinear, fully coupled multiphysics software. His technical skills include numerical methods, high-performance computing, nonlinear solid mechanics, material model development, finite element contact, and multiphysics coupling. He joined INL in 2010 with a principal focus on nonlinear solid mechanics capability development. He is the primary author of BISON, INL’s nuclear fuel performance application. He now manages INL’s Fuel Modeling and Simulation Department, which develops a set of multiphysics applications in support of several U.S. Department of Energy’s nuclear energy programs. Before joining INL, he spent 9 years at Sandia National Laboratories and worked on the solid mechanics applications in SIERRA. He has a bachelor’s and master’s degrees in civil engineering from Brigham Young University and a doctorate in civil engineering from the University of Illinois at Urbana-Champaign.
He is a distinguished staff scientist/engineer at Idaho National Laboratory with dual responsibility as the Gateway for Accelerated Innovation in Nuclear (GAIN) technical interface and as the industry program lead for the Nuclear Science User Facilities (NSUF). In these capacities, he works closely with the U.S. Department of Energy (DOE) Office of Nuclear Energy and the nuclear industry to ensure DOE facilities are used effectively to maintain the current reactor fleet and to enable innovation. He has nearly 20 years of experience in the areas of mechanical testing and fracture mechanics and over 3 years of experience in extreme environment materials characterization and drilling mechanics at the ExxonMobil Upstream Research Company in Houston, Texas. He has a doctorate (2001) and master’s (1998) degrees in mechanical engineering from the University of Washington, and a bachelor’s in mechanical engineering technology (1995) from Central Washington University.
He is a licensed professional engineer and the seismic research and development group lead at Idaho National Laboratory (INL). In this role, he built a capability at INL to deploy advanced analytical methods and numerical tools used for seismic nonlinear soil-structure interaction analysis and quantifying nuclear power plant risk to external hazards, such as seismic and flooding. His background is in vibrational analysis of structures and spent fuel storage and in high-level waste processing. He has over 13 years of experience with spent fuel canister impact analysis using Explicit Finite Element Analysis (FEA) codes. He has performed linear and nonlinear vibrational analysis, including vibrational analysis of spent nuclear fuel, seismic analysis of used nuclear fuel storage racks, and seismic soil-structure interaction (SSI) analysis of nuclear facilities and nuclear power plants. He has performed nonlinear time domain collapse analysis of high-level waste and nuclear structures to determine margin to failure. He is also involved in research to understand technologies that could make advanced nuclear power plants economically viable. His research interests include the application of the business model canvas to research and development, cost-effective advanced reactor technology, nonlinear seismic SSI analysis, seismic protective systems, spent fuel transportation and storage, and beyond design basis threats to nuclear structures. He serves on the ASCE 4 and on ASCE 43 committees. He has authored numerous reports on nuclear canister impact analysis, seismic analysis, and seismic isolation. He has a master’s degree in engineering structures and mechanics.
He is a distinguished scientist at Idaho National Laboratory in areas of processing, characterization, and analysis of novel material systems for both nuclear and non-nuclear applications, including materials for use in high-temperature, space, irradiation, and other extreme environments. He is the U.S. Department of Energy (DOE) technical lead for the DOE Advanced Reactor Technology Graphite Research and Development program, responsible for thermo-mechanical testing of nonirradiated and irradiated graphite and composites, development of test standards and code case development for determining material properties of nuclear graphite and composites. He holds a doctorate in materials science and engineering from University of Idaho, a master’s degree in nuclear engineering from University of Illinois, and a bachelor’s degree in nuclear engineering from University of California at Santa Barbara.
He is a research and development scientist at Idaho National Laboratory (INL) leading the Engineering Scale Nuclear Fuel Simulation team. His work focuses mainly on the development of INL’s nuclear fuel performance code, BISON, and on advanced modeling of fission gas behavior in nuclear fuel. He earned his master’s and doctorate degrees in nuclear engineering from Politecnico di Milano, Italy. He has 10 years of experience in nuclear fuel modeling and simulation. Prior to INL, he worked at the European Commission in Karlsruhe, Germany, and the Halden Reactor Project in Norway. His research encompasses various areas of nuclear fuel modeling, including fission gas release and swelling in oxide fuels, fuel rod performance during design-basis reactor accidents, and modeling of accident-tolerant fuel concepts, including uranium silicide fuel and iron-chromium-aluminum steel claddings.
He is a staff scientist at Idaho National Laboratory (INL) and a recognized expert in materials characterization and instrumentation. He has a doctorate in materials science and condenser matter physics from the University of California, Davis. His work has spanned global and nationwide collaborations. He has worked at premier nanocharacterization facilities at national laboratories and universities and has expert knowledge of scanning transmission electron microscopy, atom probe tomography and electron loss spectroscopy. His primary research interests lie in the investigation of materials and the origins of their physical properties. He has heavily leveraged the use of multidimensional microscopy, diffraction and artificial intelligence to address delays in data access and extraction, which has led to a new frontier in advanced microscopy. At INL, he continues to focus on the development and application of machine and deep learning in order to decipher and decimate information from images, spectra, and diffraction patterns to maximize the effectiveness, efficiency and utility of advanced microscopy. He is an invited academic faculty member and manager for a diverse group of postdoctoral research scientists, graduate students, and technicians across several national laboratories and universities. He is an author of 45 peer-reviewed publications, a recognized reviewer, and a technical contributing member to energy materials research. He was awarded two patents and has three patents pending, including an innovative approach to computational microscopy using machine learning.
He is a research scientist from Idaho National Laboratory (INL) with extensive experience in the fields of materials electrochemistry as applied to reactive and refractory metals, process metallurgy, synthesis and characterization of high-temperature metals and materials, energy-efficient manufacturing processes, and materials recycling. While working at Bhabha Atomic Research Center, India, he developed an entirely new (molten salt based) process flow-sheet for the production of vanadium metal with a view to fabricate a self-powered beta detector. He also worked on the development of a new high-temperature process for the production of commercial-grade zirconia and silica powders from the indigenously available zircon mineral. His other projects have been aimed at recovering valuable materials from waste, secondary resources, and lean ore bodies. His team could successfully develop a technology for the conversion of Zr-2.5Nb alloy scrap to high purity zirconium crystal bar by van Arkel de Boer process. This technology can be adopted to successfully transform the alloy scrap into high purity zirconium crystal bar, a metal of significant importance to the nuclear energy program. At the University of Cambridge, he worked on the process optimization studies pertaining to the preparation of titanium metal and its alloys by a novel molten salt electrochemical process. He developed a preparative process for titanium-lanthanum alloy from their mixed oxides. At the Massachusetts Institute of Technology, he worked on a high-temperature electrochemical process to generate oxygen from the lunar regolith. This is one of the two technologies shortlisted by NASA for its eventual deployment to produce breathable oxygen from in situ (lunar) resources. At INL, the scientific underpinning of his research activities has been to study the behavior of metals and materials under a given set of conditions. His diverse research pursuits include materials electrochemistry, energy-efficient manufacturing processes, and materials recycling.
He is currently serving as the national technical lead for the U.S. Department of Energy/National Nuclear Security Administration U.S. High Performance Research Reactor (USHPRR) Fuel Qualification Project with over 25 years of research and development leadership experience working with a diverse range of advanced materials and manufacturing technologies. In addition to his career at Idaho National Laboratory, he started several companies and worked in the private sector. He has 17 issued patents and over 100 technical publications to his credit. He has a bachelor’s degree in metallurgical engineering from Michigan Technological University and a doctorate in materials engineering from Rensselaer Polytechnic Institute.
He is a staff research scientist working in the Nuclear System Design and Analysis Division at Idaho National Laboratory (INL). He has expertise in heat transfer, fluid mechanics, thermal design, thermodynamics and nuclear safety analyses. Over the last few years, he has been researching high temperature heat exchanger design and optimization, system integration and power conversion systems, and safety and reliability for Advanced Reactor Concepts, and also has extensive experience in the design and construction of large-scale experimental systems for nuclear and thermal-hydraulic research. He has more than 12 years of research and development experience in nuclear/thermal engineering and has been involved in several academic, industrial, and cross-discipline national laboratory research projects. He is currently working to develop a new multi-loop, multi-fluid advanced test facility designed to examine thermal hydraulic and materials issues associated with advanced nuclear reactor technologies. He has authored two books; contributed chapters to technical books on advanced reactors, thermal systems and process heat transfer; published over 100 peer-reviewed publications; and served as the INL lead for numerous partnerships. He holds an adjunct faculty appointment in the Department of Mechanical, Aerospace, and Nuclear Engineering at Rensselaer Polytechnic Institute. He obtained his bachelor’s in mechanical engineering with concentration in robotics and controls from Wilkes University in Pennsylvania, a master’s degree in nuclear engineering with a minor in mechanical engineering from Oregon State University, a master’s degree in engineering management from University of Idaho, and doctorate in nuclear engineering from University of Idaho.
He is a directorate fellow and department manager at Idaho National Laboratory and dedicated to conducting radiation effects research, leading to the development of radiation tolerant materials, for 25 years. Throughout his career, he has demonstrated a successful multidisciplinary approach, involving extensive experimental investigations, exhaustive post-irradiation microstructural characterization, and theoretical modeling. He has extensive experience using multiple techniques, such as light ions, heavy ions, in-situ ion irradiation/microscopy, and neutron irradiation to conduct research focused on the relationships between radiation damage, material microstructure, and material performance on a broad range of reactor structural materials and nuclear fuels. In addition to this effective multidisciplinary approach, he is a recognized international expert in the nanoscale characterization of irradiated fuels and materials using transmission electron microscopy (TEM) methods. His important contributions include the evaluation of radiation effects in advanced carbide and nitride candidate materials for the Generation IV gas-cooled fast reactor program; characterization of the fission gas superlattice bubbles in irradiated U-Mo fuel; work as a principal investigator on a project that helped scientists to understand the role of irradiated defect development on thermal conductivity degradation in UO2; and evaluation of the radiation stability of advanced oxide dispersion strengthened alloys using ion irradiation that revealed the superior radiation performance of these alloys to high radiation dose. He also leads a team of researchers at Idaho National Laboratory and Brookhaven National Laboratory conducting research under a U.S. Department of Energy Basic Energy Sciences project he initiated on gas bubble self-organization.
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