Results 21 to 30 of about 37,474 (260)

Meso-Experimental Study on Tensile Characteristics of Clay

open access: yesAdvances in Civil Engineering, 2021
This paper presents an experimental study on the meso-structure change of clay using an innovative testing system. It aims to evaluate the tensile characteristics of clay.
Yi Zhou   +4 more
doaj   +1 more source

Structural formation and evolution mechanisms of fracture plugging zone

open access: yesPetroleum Exploration and Development, 2021
A coupled CFD-DEM method is used to simulate the formation process of fracture plugging zone. A photo-elastic system characterizing mesoscale force chain network developed by our own is used to model the pressure evolution in fracture plugging zone to ...
Chengyuan XU   +7 more
doaj   +1 more source

Mechanical analysis of a shear-cracked RC beam

open access: yesActa Scientiarum: Technology, 2017
Shear crack analysis is essential for engineers to estimate repair work in concrete structures. So far, conventional theoretical and numerical analyses in fracture mechanics have been applied to study concrete flexural beams, but there is still little ...
Shahriar Shahbazpanahi
doaj   +1 more source

Experimental Study on the Effect of Bedding on the Fracture Process Zone of Shale

open access: yesEnergies, 2022
The conventional fracture in shale hydraulic fracturing belongs to the type-I fracture, and the size of the fracture process zone (FPZ) is an important index to measure the fracability of rock mass.
Tiewu Tang   +3 more
doaj   +1 more source

Modelling of the Influence of Tensile Test Speed on the Fracture Load

open access: yesASM Science Journal, 2019
This investigation focuses on modelling the fracture zone of four materials at different test speeds. The influence of these test speeds on the fracture zone formula was investigated as well.
Gouda Mohamed Mahmoud, Khaled Mohamed
doaj   +1 more source

Permeability characteristics of fracture zone by high-pressure water injection tests

open access: yesYantu gongcheng xuebao, 2021
The permeability characteristics in different fracture zones of roadway floor are studied by the high-pressure water injection tests. A total of three boreholes are arranged and five water injection tests are carried out.
QIAN Zi-wei 1, HUANG Zhen 2, ZHANG Rui 3, LIANG De-xian 4
doaj   +1 more source

Effect of Aluminized Modified PS - PVD 7YSZ Thermal Barrier Coating on the Mechanical Properties of DZ125 Alloy [PDF]

open access: yesCailiao Baohu, 2022
Plasma spraying-physical vapor deposition(PS-PVD) process was applied to prepare aluminized modified thermal barrier coatings(TBCs) on the DZ125 superalloy substrate.
LUO Na, HE Bing, ZHANG Xiao-feng
doaj   +1 more source

Experimental investigation for effect of size on sandstone Mode I fracture

open access: yes工程科学学报, 2017
To study the effect of specimen size on fracture parameters in Mode I fracture issue, a group of geometrically similar sandstone specimens were tested by three-point bending.
PENG Jian-wen   +2 more
doaj   +1 more source

Crack nucleation in circular disk under mixed boundary conditions

open access: yesArchives of Mechanics, 2015
A model of crack nucleation in a circular disk, based on consideration of cracking process zone is suggested. It is assumed that the cracking process zone is a finitelength layer containing a material with partially disturbed bonds between separate ...
V.M. Mirsalimov, N.M. Kalantarly
doaj   +1 more source

Dynamic nucleation as a cascade-up of earthquakes depending on rupture propagation velocity

open access: yesEarth, Planets and Space, 2023
Earthquake dynamic rupture requires a nucleation process to provide sufficient energy to overcome the fracture energy. Large earthquakes may occur via a cascading rupture process, which includes many triggering processes that cascade from small to large ...
Kansuke Uemura, Satoshi Ide, Hideo Aochi
doaj   +1 more source

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