A5087606907- Fusion materials and technologies
- Nuclear Materials and Properties
- Advanced materials and composites
- Ion-surface interactions and analysis
- Nuclear materials and radiation effects
- Metallurgy and Material Forming
- Thermal properties of materials
- Advanced Welding Techniques Analysis
- Metal and Thin Film Mechanics
- Welding Techniques and Residual Stresses
- Thermal Radiation and Cooling Technologies
- Heat Transfer and Optimization
- Additive Manufacturing and 3D Printing Technologies
- Microstructure and Mechanical Properties of Steels
- Hydrogen embrittlement and corrosion behaviors in metals
- Powder Metallurgy Techniques and Materials
- Metal Alloys Wear and Properties
- Graphite, nuclear technology, radiation studies
- Particle accelerators and beam dynamics
- Additive Manufacturing Materials and Processes
- Advanced ceramic materials synthesis
- Advanced Thermoelectric Materials and Devices
- Superconducting Materials and Applications
- Particle Accelerators and Free-Electron Lasers
- Optical properties and cooling technologies in crystalline materials
United States Naval Academy
2016-2024
University of Michigan
2014-2016
In this work, we develop a numerical fitting routine to extract multiple thermal parameters using frequency-domain thermoreflectance (FDTR) for materials having non-standard, non-semi-infinite geometries. The is predicated on either 2D or 3D finite element analysis that permits the inclusion of boundary conditions, which cannot be considered in analytical solution heat diffusion equation frequency domain. We validate by comparing it with used within wider literature FDTR and known values...
Determining the microstructure evolution of oxide dispersion-strengthened (ODS) alloys is important for predicting safety and structural integrity fast reactors. In particular, understanding co-evolution dispersoids with dislocation loops network critical a comprehensive response to radiation. Ion irradiations were performed on dispersion strengthened MA956 5 MeV Fe++ ions from 400 500 °C at doses ranging 50 200 dpa. Characterization was primarily scanning transmission electron microscopy...
A plasma spheroidization treatment was applied to stock stainless steel 316L powder for additive manufacturing. The normal and treated powders were compared both in the state as well resulting laser bed fusion (L-PBF) builds. process slightly increased aspect ratio sphericity shifted size distribution larger diameters relative powder. austenitic nature whereas introduced a small fraction (∼3.5 vol %) of ferrite Ferrite not retained printed samples shown negatively affect build quality....
High Power Target systems are key elements in future neutrino and other rare particle production accelerators. These transform an intense source of protons into secondary particles interest to enable new scientific discoveries. As beam intensity energies increase, target face significant challenges. Radiation damages thermal shocks materials were identified as the leading cross-cutting challenges high-power facilities. material R&D address these essential ensure reliable operation...
The movement of heat through amorphous solids on an atomic level remains outstanding question. Recent studies suggest that the primary thermal carrier in materials, propagons, essentially behaves like phonons. In this work, we provide experimental evidence shows interaction between propagons and phonons by utilizing phase change chalcogenide germanium telluride. A series ultra-long time-delay time-domain thermoreflectance measurements are used to analyze scattering vibrational carriers at...
A plasma spheroidization treatment was applied to stock stainless steel 316L powder for additive manufacturing. The normal and treated powders were compared both in the state as well resulting laser bed fusion (L-PBF) builds. process slightly increased aspect ratio sphericity shifted size distribution larger diameters relative powder. austenitic nature whereas introduced a small fraction (~3.5 volume %) of ferrite Ferrite not retained printed samples shown negatively affect build quality....
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