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This paper compared the mechanical behavior of 6H SiC under quasi-static and dynamic compression. Rectangle specimens with a dimension of 3 × 3 × 6 mm 3 were used for quasi-static compression tests under three different loading rates (i.e., 10 −5 /s, 10 −4 /s, and 10 −3 /s). Stress–strain response showed purely brittle behavior of the material
Ballistic Impact of Silicon Carbide Prepared by Stephen R. Beissel Timothy J. Holmquist Gordon R. Johnson Southwest Research Institute 5353 Wayzata Boulevard Suite 607 Minneapolis, MN 55416 Contract W56HZV-06-C-0194 SwRI Report 18.12544/024
Topics: Actuators , Gas turbines , Engines , Control systems , Design , Control equipment , Electronics , Sensors , Silicon-on-insulator , Computer software Multi-Objective Optimisation of Systems Architectures for Distributed Aero-Engine Control Systems
Johnson, G.R. and Holmquist, T.J. (1994). An improved computational model for brittle materials, (Edited by S.C. Schmidt, J.W. Shaner, G.A. Samara and M. Ross). High Pressure Science and Technology – 1993 , American Institute of Physics.
Papers Doped strontium vanadate: Computational design of a stable, low work function material. Jacobs, Ryan M; Morgan, Dane; Booske, John H. Vacuum Electronics Conference (IVEC), 2016 IEEE International. 1–2. (2016) Exploiting Mechanical Flexure as a
Blood samples were first centrifuged at 2000 g for 15 min, and then 12 000 g for 20 min. After initial ultracentrifugation at 100 000 g for 90 min, the supernatant was aspirated and another 38 mL of PBS was injected for a second round of ultracentrifugation at the same conditions.
Journal Article Holmquist, T J; Johnson, G R - Journal of Applied Physics This article addresses the response of boron carbide (B{sub 4}C) to high-velocity impact. The authors previously characterized this material in 1999, using the Johnson-Holmquist [AIP Conf. Proc. 309, 981 (1994)] (JH-2) model.
During the laser pulse (panels t 1 and t 2), field-driven dipolar oscillations along the silicon-silicon bond dominate. After the laser electric field passes (panel t 3 ), some electronic density along the interatomic bonds is depleted, and the density is reloed to the interstitial regions that represent the mobile antibonding conduction band states of the crystal.
The impact and fracture of the abrasives was simulated using an Element Free Galerkin (EFG) formulation with a Johnson–Holmquist material model for the SiC particles, and smoothed particle
Academia.edu is a platform for academics to share research papers. The Martial Society. Aspects of warriors,fortifiions and social change in Scandinavia
T.J. Holmquist G.R. Johnson This article addresses the response of boron carbide (B4C) to high-velocity impact. the strength versus pressure response was compared to that of silicon carbide
The front part consisted of an oblique silicon carbide ceramic and a triangular titanium alloy prism. Holmquist, T.J.; Johnson, G.R. Response of silicon carbide to high vel ocity impact. J
1/12/1998· Gordon R. Johnson. T.J. Holmquist. An improved computational constitutive model for brittle materials is presented. It is applicable for brittle materials subjected to large strains, high strain
T. J. Holmquist and G. R. Johnson, “Characterization and Evaluation of Silicon Carbide for High-Velocity Impact,” J. Appl. Phys. 97 (9), 093502 (2005). ADS Article Google Scholar. G. I. Kanel, S. V. Razorenov, A. V. Utkin, and V. E. Fortov, Shock-Wave Phenomena in Condensed Media, (Yanus-K, Moscow, 1996) [in Russian].
1/1/2013· Anderson, C.E. Jr., Behner, T., Holmquist, T.J., Orphal, D.L., 2011. Penetration response of silicon carbide as a function of impact velocity, Int. J. Impact Engng., 38(11): 892-899. [10] Anderson, C.E. Jr., Holmquist, T.J., Orphal, D.L., Behner, T., 2010. Dwell and
D. P. DANDEKARandP. J. GAETA Chapter 101 High-Strain-Rate Characterization ofCeramics in Shear 1069 A. GILATandM. K. CHENGALVA Chapter 102 AComputational Constitutive Modelfor Brittle Materials Subjected to LargeStrains, HighStrain Rates, and
1/1/2013· Anderson, C.E. Jr., Behner, T., Holmquist, T.J., Orphal, D.L., 2011. Penetration response of silicon carbide as a function of impact velocity, Int. J. Impact Engng., 38(11): 892-899. [10] Anderson, C.E. Jr., Holmquist, T.J., Orphal, D.L., Behner, T., 2010. Dwell and
The impact and fracture of the abrasives was simulated using an Element Free Galerkin (EFG) formulation with a Johnson–Holmquist material model for the SiC particles, and smoothed particle
1/1/1997· These include various approaches based on phosphor x-ray converters, where light quanta are produced as an intermediate stage, as well as direct x-ray-to-charge conversion materials such as zinc cadmium telluride, amorphous selenium and crystalline silicon…
We next examined the morphological features of microglia and their interactions with Aβ in AC, VC, CA1, and mPFC in response to coined (A+V) GENUS (Figures 6D and 6E). Microglia exhibited a significant increase in nuer and soma area while projection length significantly decreased following coined GENUS versus no stimulation controls ( Figures 6 F–6H).
This article presents an analysis of the response of silicon carbide to high velocity impact. This includes a wide range of loading conditions that produce large strains, high strain rates, and high pressures. Experimental data from the literature are used to determine constants for the Johnson–Holmquist constitutive model for brittle materials
Johnson, G.R. and Holmquist, T.J. (1994). An improved computational model for brittle materials, (Edited by S.C. Schmidt, J.W. Shaner, G.A. Samara and M. Ross). High Pressure Science and Technology – 1993 , American Institute of Physics.
The Johnson–Holmquist-II (JH-2) constitutive model was proposed by Johnson and Holmquist 42 42. G. R. Johnson and T. J. Holmquist, “ Response of boron carbide subjected to large strains, high strain rates, and high pressures,” J. Appl. Phys. 85(12), 8060
Box-like filter response of two-dimensional array of microring resonator fabried in silicon-on-insulator technology Landobasa Y. M. Tobing1, Pieter Dumon2, Roel Baets2 and Mee-Koy Chin1 1Nanyang Technological University, Singapore 2University of Ghent
PURPOSE: To evaluate the imaging characteristics of an amorphous silicon flat-panel detector (FPD) for digital chest radiography. MATERIALS AND METHODS: The 41 × 41-cm digital FPD is constructed on a single monolithic glass substrate with a structured cesium iodide scintillator layer and an amorphous silicon thin-film transistor array for image readout.
Y. Wang, M. Seyedi, A., Hulme, J., Fiorentino, M., Beausoleil, R. G., and Cheng, K. - T. Tim, “ Bidirectional Tuning of Microring-Based Silicon Photonic Transceivers for Optimal Energy Efficiency ”, in 24th Asia and South Pacific Design Automation Conference