Search Results - "Bernier, Joel V"

High-Energy X-Ray Diffraction Microscopy in Materials Science by Bernier, Joel V, Suter, Robert M, Rollett, Anthony D, Almer, Jonathan D

“…High-energy diffraction microscopy (HEDM) is an implementation of three-dimensional X-ray diffraction microscopy. HEDM yields maps of internal crystal…”
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The influence of alloying on slip intermittency and the implications for dwell fatigue in titanium by Worsnop, Felicity F., Lim, Rachel E., Bernier, Joel V., Pagan, Darren C., Xu, Yilun, McAuliffe, Thomas P., Rugg, David, Dye, David

“…Dwell fatigue, the reduction in fatigue life experienced by titanium alloys due to holds at stresses as low as 60% of yield, has been implicated in several…”
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New opportunities for quantitative tracking of polycrystal responses in three dimensions by Schuren, Jay C., Shade, Paul A., Bernier, Joel V., Li, Shiu Fai, Blank, Basil, Lind, Jonathan, Kenesei, Peter, Lienert, Ulrich, Suter, Robert M., Turner, Todd J., Dimiduk, Dennis M., Almer, Jonathan

“…An important advance in understanding the mechanics of solids over the last 50years has been development of a suite of models that describe the performance of…”
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In-Situ Grain Resolved Stress Characterization During Damage Initiation in Cu-10%W Alloy by Pokharel, Reeju, Lebensohn, Ricardo A., Pagan, Darren C., Ickes, Timothy L., Clausen, Bjørn, Brown, Donald W., Chen, Ching-Fong, Dale, Darren S., Bernier, Joel V.

“…The evolution of stress during damage initiation and accumulation in a two-phase alloy consisting of a ductile copper (Cu) matrix with a randomly dispersed…”
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Precision of lattice strain and orientation measurements using high-energy monochromatic X-ray diffraction by Edmiston, John K., Barton, Nathan R., Bernier, Joel V., Johnson, George C., Steigmann, David J.

“…A systematic framework for estimating the uncertainty associated with measurements of finite stretch and orientation of a crystalline lattice using…”
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Crack tip process zone domain switching in a soft lead zirconate titanate ceramic by Jones, Jacob L., Motahari, S. Maziar, Varlioglu, Mesut, Lienert, Ulrich, Bernier, Joel V., Hoffman, Mark, Üstündag, Ersan

“…Non-180° domain switching leads to fracture toughness enhancement in ferroelastic materials. Using a high-energy synchrotron X-ray source and a two-dimensional…”
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Investigation of fatigue crack initiation from a non-metallic inclusion via high energy x-ray diffraction microscopy by Naragani, Diwakar, Sangid, Michael D., Shade, Paul A., Schuren, Jay C., Sharma, Hemant, Park, Jun-Sang, Kenesei, Peter, Bernier, Joel V., Turner, Todd J., Parr, Iain

“…Crack initiation at inclusions is a dominant, unavoidable and life-limiting failure mechanism of important structural materials. Fatigue progresses in a…”
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An algorithm for resolving intragranular orientation fields using coupled far-field and near-field high energy X-ray diffraction microscopy by Nygren, Kelly E., Pagan, Darren C., Bernier, Joel V., Miller, Matthew P.

“…We present a novel algorithm for reconstructing spatial intragranular lattice orientation fields using both far-field and near-field high energy X-ray…”
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Unexpected Observation of Disorder and Multiple Phase-Transition Pathways in Shock-Compressed Zr by Singh, Saransh, Gorman, Martin G, Heighway, Patrick G, Bernier, Joel V, McGonegle, David, Lee, Hae Ja, Nagler, Bob, Eggert, Jon H, Smith, Raymond F

“…The response of materials under dynamic compression involves a complex interplay of various deformation mechanisms aimed at relieving shear stresses, yielding…”
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Grain reorientation and stress-state evolution during cyclic loading of an α-Ti alloy below the elastic limit by Lim, Rachel E., Pagan, Darren C., Bernier, Joel V., Shade, Paul A., Rollett, Anthony D.

“…High-energy synchrotron x-rays are used to track grain-averaged lattice reorientation and stress-state evolution in Ti–7Al as it is cyclically loaded to 90% of…”
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Discrete spherical harmonic functions for texture representation and analysis by Singh, Saransh, Boyce, Donald E., Bernier, Joel V., Barton, Nathan R.

“…A basis of discrete harmonic functions for efficient representation and analysis of crystallographic texture is presented. Discrete harmonics are a numerical…”
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Exploring new links between crystal plasticity models and high-energy X-ray diffraction microscopy by Shade, Paul A., Musinski, William D., Obstalecki, Mark, Pagan, Darren C., Beaudoin, Armand J., Bernier, Joel V., Turner, Todd J.

“…•Crystal plasticity model development requires targeted experimental validation.•HEDM experiments provide new insights into microstructure dependent…”
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Crystal Plasticity Model Validation Using Combined High-Energy Diffraction Microscopy Data for a Ti-7Al Specimen by Turner, Todd J., Shade, Paul A., Bernier, Joel V., Li, Shiu Fai, Schuren, Jay C., Kenesei, Peter, Suter, Robert M., Almer, Jonathan

“…High-Energy Diffraction Microscopy (HEDM) is a 3-d X-ray characterization method that is uniquely suited to measuring the evolving micro-mechanical state and…”
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A Finite Energy Bandwidth-Based Diffraction Simulation Framework for Thermal Processing Applications by Pagan, Darren C., Jones, Kevontrez K., Bernier, Joel V., Phan, Thien Q.

“…We present a novel finite energy bandwidth-based diffraction simulation framework to aid the analysis of x-ray diffraction patterns gathered during in situ…”
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Microscale Observation via High-Speed X-ray Diffraction of Alloy 718 During In Situ Laser Melting by Oh, Seunghee A., Lim, Rachel E., Aroh, Joseph W., Chuang, Andrew C., Gould, Benjamin J., Bernier, Joel V., Parab, Niranjan, Sun, Tao, Suter, Robert M., Rollett, Anthony D.

“…The laser melting process is accompanied by rapid evolution in temperature, phase, structure, and strain because of its high heating and cooling rates. In this…”
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High speed synchrotron X-ray diffraction experiments resolve microstructure and phase transformation in laser processed Ti-6Al-4V by Oh, Seunghee A., Lim, Rachel E., Aroh, Joseph W., Chuang, Andrew C., Gould, Benjamin J., Amin-Ahmadi, Behnam, Bernier, Joel V., Sun, Tao, Pistorius, P. Chris, Suter, Robert M., Rollett, Anthony D.

“…The microstructures of Ti-6Al-4V following laser processing depend primarily on the phase transformation of β to α, but their development is constrained by the…”
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A method for intragranular orientation and lattice strain distribution determination by Barton, Nathan R., Bernier, Joel V.

“…A novel approach to quantifying intragranular distributions is developed and applied to the α→ɛ phase transition in iron. The approach captures both the…”
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Direct numerical simulation of deformation twinning in polycrystals by Chester, Shawn A., Bernier, Joel V., Barton, Nathan R., Balogh, Levente, Clausen, Bjørn, Edmiston, John K.

“…The ability to directly simulate the formation of twin domains in crystalline materials is of interest to the mechanics of materials community. While extensive…”
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The use of discrete harmonics in direct multi-scale embedding of polycrystal plasticity by Barton, Nathan R., Bernier, Joel V., Lebensohn, Ricardo A., Boyce, Donald E.

“…We describe an approach for directly embedding polycrystal plasticity models in component scale calculations, with an emphasis on computational tractability…”
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Fiducial marker application method for position alignment of in situ multimodal X-ray experiments and reconstructions by Shade, Paul A., Menasche, David B., Bernier, Joel V., Kenesei, Peter, Park, Jun-Sang, Suter, Robert M., Schuren, Jay C., Turner, Todd J.

“…An evolving suite of X‐ray characterization methods are presently available to the materials community, providing a great opportunity to gain new insight into…”
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