Results 1 to 10 of about 2,821,004 (350)

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   +3 more sources

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

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

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

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

A novel methodology for large strain under intermediate strain rate loading

open access: yesPolymer Testing, 2021
Hopkinson bar has already worked to measure mechanical properties of materials under high strain rates, but it fails to conduct intermediate strain rates loading with considerable deformation. Thereby, a methodology is proposed for achieving enough large
H. He   +5 more
doaj   +1 more source

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

Modelling of aluminium sheet material at elevated temperatures [PDF]

open access: yes, 2004
The formability of Al–Mg sheet can be improved considerably, by increasing the temperature.\ud At elevated temperatures, the mechanical response of the material becomes strain rate dependent.
Boogaard, A.H. van den   +2 more
core   +12 more sources

Assessment of left ventricular function in horses with aortic regurgitation by 2D speckle tracking

open access: yesBMC Veterinary Research, 2020
Background Aortic regurgitation (AR) may lead to left ventricular (LV) dilatation, cardiac arrhythmias and heart failure. Close follow-up of horses with AR is therefore paramount to detect onset of cardiac decompensation.
A. Decloedt   +4 more
doaj   +1 more source

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