Results 31 to 40 of about 4,596,099 (356)

Experimental investigation of modified desulfurized gypsum-based concrete permeability performance [PDF]

Archives of Civil Engineering
To comprehend the permeability behavior of modified desulfurized gypsum-based concrete under varying stress conditions, this investigation conducted permeability assessments under both confining pressure and unloading circumstances.
Yong Luo, Shuai Ren, Diancai Xiao, Cong Gao, Linfeng Xu, Hao Wu   +5 more
doaj   +1 more source

The influence of the bedding angle under passive confining pressure on the dynamic strength and energy consumption of shale

矿业科学学报, 2021
In order to analyze the strength characteristics, damage characteristics and energy dissipation laws of the bedding shale specimens under passive confining pressure, the Hopkinson Pressure Bar(SHPB)device was used to perform different impact pressures ...
Yang Guoliang, Bi Jingjiu, Zhang Zhifei, Li Xuguang, Liu Jie, Hong Peixuan   +5 more
doaj   +1 more source

MRI investigation of granular interface rheology using a new cylinder shear apparatus [PDF]

, 2009
The rheology of granular materials near an interface is investigated through proton magnetic resonance imaging. A new cylinder shear apparatus has been inserted in the MRI device, which allows the control of the radial confining pressure exerted by the ...
Alain Corfdir, Artoni, Bocquet, Bonn, Caprihan, Caprihan, Chambon, Chambon, Cheng, Chevoir, Chevoir, Corfdir, Coste, da Cruz, Daniel, DeJong, Ehrichs, François Bertrand, François Chevoir, Fukushima, Fukushima, Georg Koval, Hanlon, Hill, Howell, Huang, Jarny, Jean-Noël Roux, Jop, Knight, Koval, Koval, Kuperman, Kuperman, Latzel, Laurent Tocquer, Lerat, Losert, Metcalfe, Miller, Mueth, Mueth, Møller, Nakagawa, Nedderman, Oumarou, Ovarlez, Ovarlez, Pascal Moucheront, Raynaud, Ristow, Rodts, Schlosser, Seymour, Stéphane Rodts, Tardos, Tardos, Tubacanon, Uesugi, Uesugi, Uesugi, Vardoulakis, Veje, Wang, Yamane, Yang, Yang   +66 more
core   +5 more sources

Mechanical properties of thermal aged HTPB composite solid propellant under confining pressure

Defence Technology, 2022
With the purpose of investigating the effects of confining pressure and aging on the mechanical properties of Hydroxyl-terminated polybutadiene (HTPB) based composite solid propellant, tensile tests of thermal accelerated aged propellant samples under ...
Zhe-jun Wang, Hong-fu Qiang
doaj   +1 more source

Morphology of prestellar cores in pressure-confined filaments [PDF]

Monthly Notices of the Royal Astronomical Society: Letters, 2018
ABSTRACT Observations of prestellar cores in star-forming filaments show two distinct morphologies. While molecular line measurements often show broad cores, submillimetre continuum observations predominantly display pinched cores compared to the bulk of the filament gas.
Heigl, S., Gritschneder, ‹., Burkert, A.   +2 more
openaire   +3 more sources

Study on the damage characteristics of gas-bearing shale under different unloading stress paths.

PLoS ONE, 2019
In order to understand the influence of unloading on the mechanical properties of shale rock, triaxial unloading tests under different stress paths were conducted.
Yintong Guo, Lei Wang, Xin Chang
doaj   +1 more source

Experimental Study on the Deformation and Permeability Characteristics of Raw Coal under the Coupling Effect of Confining Pressure and Pore Pressure

Advances in Materials Science and Engineering, 2021
The effects of confining pressure and pore pressure on the deformation and permeability characteristics of raw coal are studied experimentally. The deformation properties of raw coal by fracture and its permeability evolution laws under the coupling ...
Kangwu Feng, Kequan Wang, Yushun Yang
doaj   +1 more source

Mechanical Properties of Rock–Coal–Rock Composites at Different Inclined Coal Seam Thicknesses

Frontiers in Physics, 2022
A comprehensive understanding of the mechanical properties of coal and rock sections is necessary for interpreting the deformation and failure modes of such underground sections and for evaluating the potential dynamic hazards. However, most studies have
Bo Ma, Feng Wang, Feng Wang, Hongyang Liu, Dawei Yin, Dawei Yin, Zhiguo Xia   +6 more
doaj   +1 more source

Pressure-confined Lyman-alpha clouds

The Astrophysical Journal, 1989
Results are presented of numerical models of pressure-confined spherical gas clouds which produce absorption resembling the low to intermediate atomic column density lines found in high-redshift QSO spectra. One-dimensional hydrodynamical models including electron conduction are described, and the rate equations are solved to find ionization and ...
E. Baron, R. F. Carswell, C. J. Hogan, R. J. Weymann   +3 more
openaire   +1 more source

Explosive fracturing simulation experiment for low permeability reservoirs and fractal characteristics of cracks produced

Petroleum Exploration and Development, 2013
Based on the explosive fracturing simulation experiment for low permeability reservoir, growths of the cracks produced by the explosive fracturing in the samples were analyzed.
Peng XU, Yuanfang CHENG, Xinyun LIU, Xiaochun ZHANG, Libao SHI   +4 more
doaj   +1 more source