Zobrazeno 1 - 10
of 50
pro vyhledávání: '"Daniel Charles Bufford"'
Autor:
Caitlin Anne Taylor, Daniel Charles Bufford, Brittany Rana Muntifering, David Senor, Mackenzie Steckbeck, Justin Davis, Barney Doyle, Daniel Buller, Khalid Mikhiel Hattar
Publikováno v:
Materials, Vol 10, Iss 10, p 1148 (2017)
Materials designed for nuclear reactors undergo microstructural changes resulting from a combination of several environmental factors, including neutron irradiation damage, gas accumulation and elevated temperatures. Typical ion beam irradiation expe
Externí odkaz:
https://doaj.org/article/0842f406640a4696944869ccdca821c7
Autor:
Khalid Hattar, Daniel Charles Bufford, Mackenzie Steckbeck, Nathan M. Heckman, Samuel A. Briggs, Daniel L. Buller, Brad L. Boyce, Timothy A. Furnish
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 509:39-47
Cladding and structural materials for nuclear reactors must withstand elevated temperatures, energetic particle fluxes, and sustained mechanical loading, while maintaining mechanical strength and integrity. To address this experimental need for new m
Publikováno v:
MRS Advances. 6:674-681
Microstructures and corresponding properties of compacted powders ultimately depend on the mechanical response of individual particles. In principle, computational simulations can predict the results of powder compaction processes, but the selection
Autor:
Albert C. Lin, Nathan A. Mara, Kevin M. Schmalbach, Daniel Charles Bufford, Changquan Calvin Sun, Chenguang Wang
Publikováno v:
Journal of Materials Research. 36:2251-2265
Nanoindentation provides a convenient and high-throughput means for mapping mechanical properties and for measuring the strain rate sensitivity of a material. Here, nanoindentation was applied to the study of microcrystalline cellulose. Constant stra
Autor:
Marcia A. Cooper, Christopher M. Barr, Jeremy B. Lechman, Stewart A. Silling, Daniel Charles Bufford
Publikováno v:
Computational Particle Mechanics. 8:1005-1017
The peridynamic theory of solid mechanics is applied to modeling the deformation and fracture of micrometer-sized particles made of organic crystalline material. A new peridynamic material model is proposed to reproduce the elastic–plastic response
Autor:
Jacob Gutierrez-Kolar, David Frazer, Brad L. Boyce, Daniel Charles Bufford, Riley Parrish, Daniel L. Buller, Caitlin A. Taylor, Khalid Hattar
Publikováno v:
Microscopy Today. 29:28-34
In-situ transmission electron microscopy (TEM) provides an avenue to explore time-dependent nanoscale material changes induced by a wide range of environmental conditions that govern material performance and degradation. The In-situ Ion Irradiation T
Autor:
Daniel Charles Bufford, Jeremy B. Lechman, Marcia A. Cooper, Benjamin C. White, Michael S. Oliver
Publikováno v:
Powder Technology. 374:10-21
Particle characteristics can drastically influence the process-structure-property-performance aspects of granular materials in compression. We aim to computationally simulate the mechanical processes of stress redistribution in compacts including the
Publikováno v:
JOM. 71:3350-3357
This work characterizes the irradiation creep response of nanocrystalline zirconium by nanoscale quantitative tensile loading and ion irradiation experiments performed simultaneously in situ inside a transmission electron microscope. Microfabricated
Autor:
Khalid Hattar, Daniel Charles Bufford, Brad L. Boyce, Apurva Mehta, Fang Ren, Timothy A. Furnish
Publikováno v:
Scripta Materialia. 143:15-19
Prior studies on the high-cycle fatigue behavior of nanocrystalline metals have shown that fatigue fracture is associated with abnormal grain growth (AGG). However, those previous studies have been unable to determine if AGG precedes fatigue crack in
Autor:
Khalid Hattar, Xuying Liu, Shen J. Dillon, Robert S Averback, Gowtham S. Jawaharram, Daniel Charles Bufford, Calvin Robert Lear
Publikováno v:
Journal of Nuclear Materials. 490:59-65
This work reports on irradiation-induced creep (IIC) measured on nanolaminate (Cu-W and Ni-Ag) and nanocrystalline alloys (Cu-W) at room temperature using a combination of heavy ion irradiation and nanopillar compression performed concurrently in sit