Results 111 to 120 of about 12,040 (234)

Design of a split Hopkinson pressure bar with partial lateral confinement [PDF]

open access: yes, 2016
This paper presents the design of a modified split Hopkinson pressure bar (SHPB) where partial lateral con- finement of the specimen is provided by the inertia of a fluid annulus contained in a long steel reservoir.
Andrew D Barr   +12 more
core   +1 more source

The Hematite Question: Hydrogen‐Driven Magnetization of Hematite‐Bearing Sandstones and Insights for Natural Hydrogen Exploration

open access: yesGeophysical Research Letters, Volume 53, Issue 7, 16 April 2026.
Abstract Natural hydrogen is a promising clean energy resource, but locating subsurface accumulations remains challenging. Aeromagnetic anomalies are increasingly utilized as a rapid and cost‐effective tool for geological hydrogen prospection, particularly associated with magnetite formation during abiotic geochemical hydrogen generation through ...
B. D. L. Mendes   +3 more
wiley   +1 more source

Caracterización dinámica mediante barra Hopkinson de materiales cerámicos monolíticos y compuestos

open access: yesBoletín de la Sociedad Española de Cerámica y Vidrio, 2002
The mechanical behaviour of monolithic and composite ceramic materials was analysed under impact conditions, using the Hopkinson bar to study the response and failure modes.
Khalifa, A.   +3 more
doaj  

The influence of the dynamic loading rate on tensile failure properties of metallic materials

open access: yesEPJ Web of Conferences, 2012
The influence of the dynamic loading rate on the tensile failure properties of a series of tungsten alloys and an austenitic stainless steel were investigated by evaluating the flexural strength with unnotched and notched Charpy specimens.
Couque H.
doaj   +1 more source

Calibration procedure for force and displacement measurements at the HOPLAB [PDF]

open access: yes, 2013
The report explains the calibration procedure of the HOPLAB facility. A short description of the facility is first included concerning the mechanical structure and its equipment in terms of sensors, transducers and relevant electronic instruments.
MOLINA RUIZ Francisco Javier   +4 more
core   +1 more source

A new split Hopkinson tensile bar design

open access: yesInternational Journal of Impact Engineering, 2012
This work presents a new design for a split Hopkinson tensile bar (SHTB) as well as generated representative experimental results. The new design uses a U shaped striker bar as projectile and addresses several shortcomings of classical SHTB designs using hollow striker bars.
Gerlach, R, Kettenbeil, C, Petrinic, N
openaire   +2 more sources

Dynamic Mechanical Behavior and Numerical Simulation of Frozen Soil under Impact Loading

open access: yesShock and Vibration, 2016
Split Hopkinson pressure bars (SHBP) were used to perform impact experiments on frozen soil under various impact velocities and temperatures to analyze the effect of these parameters on the mechanical behavior of the soil.
Dan Zhang, Zhiwu Zhu, Zhijie Liu
doaj   +1 more source

Spin ice on the trillium lattice studied by Monte Carlo calculations

open access: yes, 2010
We study a local ferromagnetic Ising model for classical spins on the trillium lattice. The ground state of this model features two spins out(/in) and one spin in(/out) on each triangle, and leads to a macroscopic ground state degeneracy. Our Monte Carlo
Hopkinson, John M., Redpath, Travis E.
core   +1 more source

Flow Stress of beryllium: Attempt for a Bayesian Crossed-data Analysis from Hopkinson Bars to Rayleigh-Taylor Instabilities

open access: yesEPJ Web of Conferences, 2018
In this paper, we demonstrate by a Bayesian approach the incapacity of the Preston-Tonks-Wallace (PTW) strength model to represent, with the same set of parameters, the flow stress of beryllium in both moder-ate and highly dynamic experiments, and ...
Seisson Gabriel   +3 more
doaj   +1 more source

Characterisation of dynamic behaviour of alumina ceramics: evaluation of stress uniformity

open access: yesAIP Advances, 2015
Accurate characterisation of dynamic behaviour of ceramics requires the reliable split-Hopkinson pressure bar (SHPB) technique and the condition of uniaxial homogeneous specimen deformation.
Zhiyong Wang, Peifeng Li
doaj   +1 more source

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