Results 1 to 10 of about 1,811,461 (277)

Matrix gas flow through “impermeable” rocks – shales and tight sandstone [PDF]

open access: yesSolid Earth, 2022
The effective pressure sensitivity of gas flow through two shales (Bowland and Haynesville shales) and a tight gas sandstone (Pennant sandstone) was measured over the typical range of reservoir pressure conditions.
E. Rutter   +3 more
doaj   +1 more source

A Discrete Model of Rock-Soil Medium Response in the Determination of Horizontal Strain Values

open access: yesApplied Sciences, 2021
This paper presents a method for determining the standard deviation and variation coefficient for both the predicted and measured values of horizontal strain that were caused by underground mining operations. The solution was based on a discrete model of
Anton Sroka   +6 more
doaj   +1 more source

Surface quality and dry sliding wear behavior of AZ61Mg alloy using Abbott firestone technique

open access: yesScientific Reports, 2023
Currently, magnesium alloys are widely utilized in diverse sectors due to their unique properties. However, the AZ61Mg alloy, a commonly used magnesium alloy, is known to have poor wear resistance, which limits its applications.
Eman H. El-Shenawy, Ahmed I. Z. Farahat
doaj   +1 more source

The Mohr–Coulomb criterion for intact rock strength and friction – a re-evaluation and consideration of failure under polyaxial stresses [PDF]

open access: yesSolid Earth, 2016
Darley Dale and Pennant sandstones were tested under conditions of both axisymmetric shortening and extension normal to bedding. These are the two extremes of loading under polyaxial stress conditions.
A. Hackston, E. Rutter
doaj   +1 more source

On the cyclic deformation behavior and correlated damage mechanism of selective laser melted AlSi10Mg alloy holding different initial microstructures

open access: yesJournal of Materials Research and Technology, 2023
The present work deals with the cyclic deformation behavior of AlSi10Mg alloy fabricated through selective laser melting. Toward this end, the printed material was heat treated and was tested through strain-controlled push–pull fatigue under different ...
F. Bathaee   +3 more
doaj   +1 more source

Modeling long-term volcanic deformation at Kusatsu-Shirane and Asama volcanoes, Japan, using the GNSS coordinate time series

open access: yesEarth, Planets and Space, 2021
Long-term deformation of Kusatsu-Shirane and Asama volcanoes in central Japan were investigated using Global Navigation Satellite System (GNSS) measurements.
Hiroshi Munekane
doaj   +1 more source

Room temperature deformation mechanisms of a Fe–Mn–Al–C steel

open access: yesJournal of Materials Research and Technology, 2023
This study aims to investigate the deformation mechanisms of an austenite-based duplex Fe–Mn–Al–C steel at room-temperature through uniaxial tensile tests, strain rate sensitivity and stress relaxation analysis.
A. Moshiri   +5 more
doaj   +1 more source

Application of Electron Backscatter Diffraction to Calcite-Twinning Paleopiezometry

open access: yesGeosciences, 2022
Electron backscatter diffraction (EBSD) was used to determine the orientation of mechanically twinned grains in Carrara marble experimentally deformed to a small strain (≤4%) at room temperature and at a moderate confining pressure (225 MPa).
Ernest Rutter   +2 more
doaj   +1 more source

Microstructure, texture and mechanical properties of a nickel-free high nitrogen duplex stainless steel processed through friction stir spot welding

open access: yesJournal of Materials Research and Technology, 2021
A nickel-free high nitrogen duplex stainless steel holding high Mn-content was friction stir spot welded under the various rotational speeds. The microstructure/texture evolutions of the joints and the correlated mechanical properties were investigated ...
S. Yousefian   +5 more
doaj   +1 more source

Fault rock heterogeneity can produce fault weakness and reduce fault stability

open access: yesNature Communications, 2022
This paper shows that faults comprised of heterogeneously distributed materials, as is typical for tectonic faults in nature, are weaker and more unstable than equivalent faults where the materials are homogeneously mixed together.
John D. Bedford   +2 more
doaj   +1 more source

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