Results 1 to 10 of about 1,638,542 (312)

Strain and strain rate in friction extrusion

open access: yesJournal 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.
Xiao Li   +6 more
doaj   +3 more sources

Strain y strain rate para dummies Strain and strain rate for dummies

open access: yesRevista 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 ...
Pastor Olaya   +2 more
doaj   +1 more source

Strain and strain rate: An emerging technology in the perioperative period

open access: yesAnnals of Cardiac Anaesthesia, 2016
Newer noninvasive parameters are being used for perioperative detection of myocardial ischaemia. TDI and global strain rate are some of these parameters. TDI signal is a modification of the routine Doppler flow signal.
Vishwas Malik   +2 more
doaj   +3 more sources

Plane strain tension fracture at high strain rate [PDF]

open access: yesEPJ Web of Conferences, 2021
Under plane stress conditions, most micromechanical and phenomenological models predict a minimum in ductility for plane strain tension stress state.
Adlafi Morwan   +5 more
doaj   +1 more source

Novel nanoindentation strain rate sweep method for continuously investigating the strain rate sensitivity of materials at the nanoscale

open access: yesMaterials & Design, 2023
We introduce a new nanoindentation method to continuously measure the hardness while sweeping through orders of magnitudes of strain rates within a single experiment.
Hendrik Holz, Benoit Merle
doaj   +1 more source

Flow Stress Description Characteristics of Some Constitutive Models at Wide Strain Rates and Temperatures

open access: yesTechnologies, 2022
The commonly employed mathematical functions in constitutive models, such as the strain hardening/softening model, strain-rate hardening factor, and temperature-softening factor, are reviewed, and their prediction characteristics are illustrated.
Hyunho Shin   +3 more
doaj   +1 more source

Programming Strain Rate Dependency into Mechanical Metamaterials [PDF]

open access: yesEPJ Web of Conferences, 2021
This work presents an approach to introduce significant strain rate sensitivity into metallic metamaterials that are manufactured via additive manufacturing, where the base material employed will typically have a weak strain rate sensitivity.
Patil Sankalp, Ganzenmüller Georg
doaj   +1 more source

Assessment of Physical and Mechanical Parameters of the Left Ventricle by Speckle Tracking Technique for Prediction Coronary Artery Disease Patients

open access: yesFrontiers in Biomedical Technologies, 2022
Purpose: The goal of the study was to identify earlier pathology of the Left Ventricle (LV) using Speckle Tracking Echocardiography (STE) without angiography results for detecting Coronary Artery Disease (CAD) patients who have need invasive coronary ...
Zeinab Alsadat Ahmadi   +4 more
doaj   +1 more source

Myocardial strain and strain rate in Kawasaki disease [PDF]

open access: yesEuropean 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
openaire   +2 more sources

Strain rate dependency of dislocation plasticity

open access: yesNature Communications, 2021
The relationship between the strain rate and micro-scale deformation in metals is still poorly understood. Here the authors use discrete dislocation dynamics and molecular dynamics to establish a universal relationship between material strength ...
Haidong Fan   +4 more
doaj   +1 more source

Home - About - Disclaimer - Privacy