Results 1 to 10 of about 50 (49)
Strain and strain rate in friction extrusion
Journal of Materials Research and Technology, 2022 Friction extrusion is a metal forming process that generates large plastic strains and deformation-induced heating through friction between a rotating die and the material to be extruded. The final deformation state in friction extruded wire has been visualized in previous studies but the distribution and evolution of strain and strain rate inside the ...
Xiao Li +6 more
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Plane strain tension fracture at high strain rate [PDF]
EPJ Web of Conferences, 2021 Under plane stress conditions, most micromechanical and phenomenological models predict a minimum in ductility for plane strain tension stress state. Therefore, the stress state of plane strain tension plays a crucial role in many forming and crash applications and the reliable measurement of the strain to fracture for plane strain tension is ...
Vincent Grolleau +6 more
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Strain rate dependency of dislocation plasticity [PDF]
Nature Communications, 2021 AbstractDislocation glide is a general deformation mode, governing the strength of metals. Via discrete dislocation dynamics and molecular dynamics simulations, we investigate the strain rate and dislocation density dependence of the strength of bulk copper and aluminum single crystals.
Haidong Fan +4 more
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Myocardial strain and strain rate in Kawasaki disease [PDF]
European Heart Journal - Cardiovascular Imaging, 2013 We sought to determine whether velocity vector imaging (VVI)-derived left ventricular (LV) myocardial deformation indices could detect subtle myocardial abnormalities in acute Kawasaki disease (KD).The study cohort of children with KD was divided by coronary artery dilation (CAD, Z-score >2.5) and/or uncomplicated vs.
Rachel T. McCandless +5 more
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Strain and Strain Rate Echocardiography
Methodist DeBakey Cardiovascular Journal, 2006 Myocardial function is eventually determined by the shortening and lengthening of myocardium, i.e., myocardial deformation or strain. The exact and direct measure of myocardial deformation has been dependent on the in vitro analysis of myocardial length.
Jianwen Wang, Sherif F. Nagueh
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Rheometer Strain and Strain-Rate Errors [PDF]
, 1990 We have found systematic errors which can affect measured rheological properties in the instrumentation of two commercial rheometers. Users of commercial instrumentation should establish the extent to which these and similar errors may exist in their systems.
Giles, D.W., Denn, M.M.
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Strain y strain rate para dummies
Revista Colombiana de Cardiología, 2011 Desarrollos recientes en el campo de la ecocardiografía han permitido a los cardiólogos cuantificar de manera objetiva la función miocárdica regional y global con base en los conceptos de deformación (strain) y velocidad de deformación (strain rate) que pueden calcularse de manera no invasiva tanto en el ventrículo izquierdo como en el derecho, y ...
Olaya, Pastor +2 more
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Physical nature of strain rate sensitivity of metals and alloys at high strain rates [PDF]
Journal of Physics: Conference Series, 2018 The role of instabilities of plastic flow at plastic deformation of various materials is one of the important cross-disciplinary problems which is equally important in physics, mechanics and material science. The strain rate sensitivities under slow and high strain rate conditions of loading have different physical nature.
E. N. Borodin +6 more
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What is behind the plastic strain rate? [PDF]
Rheologica Acta, 2009 Rheologica Acta, 48 (7)
Hütter, Markus +2 more
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Strain rate–dependent mechanical metamaterials [PDF]
Science Advances, 2020 Metamaterials with strain rate–dependent buckling behavior, switchable auxeticity, and negative viscoelasticity are demonstrated.
S. Janbaz +3 more
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