Results 21 to 30 of about 550,330 (283)

Effect of Brittle Mineral Size on Hydraulic Fracture Propagation in Shale Gas Reservoir

open access: yesGeofluids, 2019
The properties of brittle minerals have great effect on the morphology of postfracturing network in shale reservoirs in the southeastern Ordos Basin, China.
Wei Gao   +4 more
doaj   +1 more source

Predicting fracture behavior of quasi-Brittle materials using quantitatively varied geometric specimens: A design method

open access: yesMaterials & Design, 2023
Fracture toughness (KIC) and tensile strength (ft) are two important parameters for describing the fracture performance of quasi-brittle materials. The accurate determination of both parameters is crucial for the safety design and stability evaluation of
Junfeng Guan, Yue Ma, Chaopeng Xie
doaj   +1 more source

Existence of solutions to a regularized model of dynamic fracture [PDF]

open access: yes, 2010
Existence and convergence results are proved for a regularized model of dynamic brittle fracture based on the Ambrosio–Tortorelli approximation. We show that the sequence of solutions to the time-discrete elastodynamics, proposed by Bourdin, Larsen ...
Larsen, CJ   +8 more
core   +1 more source

Fracture morphology and its evolution A review on crack path stability and brittle fracture along butt-weld [PDF]

open access: yesFracture and Structural Integrity, 2015
Considerations are made for the fracture morphology and its evolution in relation to the brittle fracture along butt-weld, where crack path stability may play important roles in various aspects. Analyses of a kinked and curved crack are first reviewed in
Y. Sumi
doaj   +2 more sources

Brittle Fracture of Dental Amalgam [PDF]

open access: yesJournal of Dental Research, 1965
Peer Reviewed ; http://deepblue.lib.umich.edu/bitstream/2027.42/67331/2/10.1177_00220345650440053801 ...
Asgar, Kamal, Sutfin, Lloyd V.
openaire   +3 more sources

Multiscale modelling of materials chemomechanics : brittle fracture of oxides and semiconductors [PDF]

open access: yes, 2014
Fracture is one of the most challenging ‘multi-scale’ problems to model: since crack propagation is driven by the concentration of a long-range stress field at an atomically sharp crack tip, an accurate description of the chemical processes occurring in ...
De Vita, Alessandro   +4 more
core   +1 more source

Effects of High Toughness and Welding Residual Stress for Unstable Fracture Prevention

open access: yesApplied Sciences, 2020
Unstable fractures generally occur in brittle materials under low-temperature service conditions. Toughness and welding residual stress are the main factors that should be evaluated when defining a brittle crack propagation path. In this study, a rainbow
Gyubaek An, Jeongung Park, Ilwook Han
doaj   +1 more source

Investigation on the Applicability of Several Fracture Criteria to the Mixed Mode Brittle Fractures

open access: yesAdvances in Mechanical Engineering, 2013
Mixed mode brittle fractures are very common failure behavior for cracked brittle materials under loading, and therefore, the prediction of the mixed mode brittle fractures is significant.
Li Ren   +3 more
doaj   +1 more source

Fracture mechanics of micro samples: Fundamental considerations

open access: yesMaterials & Design, 2018
In this review article we consider the crack growth resistance of micrometer and sub-micrometer sized samples from the fracture mechanics point of view. Standard fracture mechanics test procedures were developed for macro-scale samples, and reduction of ...
R. Pippan, S. Wurster, D. Kiener
doaj   +1 more source

Using the discrete element method to simulate brittle fracture in the indentation of a silica glass with a blunt indenter [PDF]

open access: yes, 2013
This work was supported by the Conseil Régional d’Aquitaine and was conducted under the auspices of the Etude et Formation en Surfacage Optique (EFESO 2) project.
CHARLES, Jean-Luc   +5 more
core   +1 more source

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