Results 21 to 30 of about 2,546,782 (204)
In-Situ Nuclear Magnetic Resonance Investigation of Strain, Temperature, and Strain-Rate Variations of Deformation-Induced Vacancy Concentration in Aluminum [PDF]
, 1998 Critical strain to serrated flow in solid solution alloys exhibiting dynamic strain aging (DSA) or Portevin–LeChatelier effect is due to the strain-induced vacancy production. Nuclear magnetic resonance (NMR) techniques can be used to monitor in situ the
A. Jackman +38 more
core +4 more sources
High strain rate response of UHP(FR)C in compression
EPJ Web of Conferences, 2015 The objective of this study was to investigate the compression behaviour of the UHPFRC and its matrix (UHPC) under high strain rate. Two experimental set-ups were used for compression testing: a traditional Split Hopkinson Pressure Bars and a compression
Bragov Anatoly +5 more
doaj +1 more source
X-ray microtomographic characterization and quantification of the strain rate dependent failure mechanism in cenosphere epoxy syntactic foams [PDF]
, 2016 This work investigates the failure mechanism in cenosphere epoxy syntactic foams at the quasi-static and dynamic strain rates. Split-Hopkinson pressure bar experiments are controlled to stop dynamic deformation of the foams at various strain stages.
Adrien +26 more
core +1 more source
High strain rate behaviour of fiber reinforced concrete
EPJ Web of Conferences, 2018 The results of dynamic compression and tensile-splitting tests of concrete reinforced by randomly distributed short non – metallic fibres are presented.
Popovič Miloslav +2 more
doaj +1 more source
Very High Strain Rate Range [PDF]
, 2018 The classical Split Hopkinson Pressure Bar (SHPB) system is considered to be able to perform tests at strain rates ranging from 102 to 104s−1. However, some modifications can be carried out to extend the reachable strain rate within the specimen. The mean strain rate defined within the specimen:\[\dot{\varepsilon}_s =\frac{V_\text{out}-V_\text{in}}{l_s}
Heuzé, Thomas +2 more
openaire +3 more sources
Fractal and Fractional, 2023 In order to explore the size effect of the mechanical and damage characteristics of coal measure sand stones under dynamic load, uniaxial impact compression tests were carried out on coal-bearing sand stones with a diameter of 50 mm and a length–diameter
Enbing Yi, Zhenhua Li
doaj +1 more source
A Micromechanical Model of Hardening, Rate Sensitivity and Thermal Softening in BCC Single Crystals [PDF]
, 2001 The present paper is concerned with the development of a micromechanical model of the hardening, rate-sensitivity and thermal softening of bcc crystals. In formulating the model we specifically consider the following unit processes: double-kink formation
Cuitino, Alberto M. +2 more
core +4 more sources
Specimen Inertia in high strain rate tensile testing
EPJ Web of Conferences, 2015 It is well established that measurements of the dynamic mechanical response of materials are susceptible to errors due to the inertia of the specimen, which causes stresses in addition to the intrinsic material strength.
Hockly Meyrick, Siviour Clive R.
doaj +1 more source
Mechanical behavior of sand under high pressure and high strain rate
EPJ Web of Conferences, 2012 Characterizing of the mechanical behavior of sand under impact loading is necessary to estimate the power of explosive mines. Using Hopkinson pressure bars for its characterization only low and limited pressures can be applied.
Meyer L.W., Abdel-Malek S., Herzig N.
doaj +1 more source
Comparison of Measurement of Aluminium Alloy in High Strain Rate
Journal of Mechanical Engineering, 2023 This article describes the Split Hopkinson Pressure Bar test of aluminium alloy EN AW 7075-T6. This test is used for material testing at a high strain rate. Two approaches in measurement.
Mánek Martin, Fusek Martin
doaj +1 more source