Results 11 to 20 of about 210,758 (203)

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

Scaling exponents for fracture surfaces in homogenous glass and glassy ceramics [PDF]

open access: yes, 2006
We investigate the scaling properties of post-mortem fracture surfaces in silica glass and glassy ceramics. In both cases, the 2D height-height correlation function is found to obey Family-Viseck scaling properties, but with two sets of critical ...
A.-L. Barabasi   +14 more
core   +4 more sources

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

Slow crack growth in polycarbonate films [PDF]

open access: yes, 2005
We study experimentally the slow growth of a single crack in polycarbonate films submitted to uniaxial and constant imposed stress. The specificity of fracture in polycarbonate films is the appearance of flame shaped macroscopic process zones at the tips
  +8 more
core   +5 more sources

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

Role of disorder in the size-scaling of material strength [PDF]

open access: yes, 2007
We study the sample size dependence of the strength of disordered materials with a flaw, by numerical simulations of lattice models for fracture. We find a crossover between a regime controlled by the fluctuations due to disorder and another controlled ...
E. J. Gumbel   +7 more
core   +3 more sources

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

Creep and Fracture in Concrete: A Fractional Order Rate Approach [PDF]

open access: yes, 2002
The paper analyses the interaction between strain-softening and time-dependent behaviour in the case of quasi-static fracture of concrete. A viscous element based on a fractional order rate law is coupled with a micromecanical model for the fracture ...
Barenblatt   +17 more
core   +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

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