Results 21 to 30 of about 210,758 (203)

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

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

Crackling noise in three-point bending of heterogeneous materials [PDF]

open access: yes, 2011
We study the crackling noise emerging during single crack propagation in a specimen under three-point bending conditions. Computer simulations are carried out in the framework of a discrete element model where the specimen is discretized in terms of ...
Ferenc Kun   +4 more
core   +2 more sources

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

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

Influence of Loading Rate on the Hydrogen-Assisted Micro-Damage in Bluntly Notched Samples of Pearlitic Steel

open access: yesMetals, 2016
The influence of loading rate (crosshead speed) on the fracture process of bluntly notched samples of pearlitic steel under hydrogen environment is analyzed in this paper.
Jesús Toribio   +2 more
doaj   +1 more source

Statistical extraction of process zones and representative subspaces in fracture of random composite [PDF]

open access: yes, 2012
We propose to identify process zones in heterogeneous materials by tailored statistical tools. The process zone is redefined as the part of the structure where the random process cannot be correctly approximated in a low-dimensional deterministic space ...
Bordas, Stephane Pierre-Alain   +3 more
core   +3 more sources

Modeling water penetration at dam-foundation joint [PDF]

open access: yes, 2007
When fracture occurs in a concrete dam, the crack mouth is typically exposed to water. Very often this phenomenon occurs at the dam-foundation joint and is driven also by the fluid pressure inside the crack.
Bolzon   +10 more
core   +2 more sources

Nonlocal Criteria for Brittle and Quasi-Brittle Fracture of Geomaterials and Rocks

open access: yesE3S Web of Conferences, 2018
Nonlocal criteria are used for prediction materials and rock mass failure near stress concentrations (pores, faults, openings, excavations). A common property of nonlocal fracture criteria is the introduction of the intrinsic material length ...
Suknev Sergey
doaj   +1 more source

Failure mechanisms and surface roughness statistics of fractured Fontainebleau sandstone [PDF]

open access: yes, 2007
In an effort to investigate the link between failure mechanisms and the geometry of fractures of compacted grains materials, a detailed statistical analysis of the surfaces of fractured Fontainebleau sandstones has been achieved. The roughness of samples
B. K. Chakrabarti   +11 more
core   +3 more sources

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