Results 21 to 30 of about 66,811 (159)

Experimental investigation of mixed-mode-I/II fracture in polymer mortars using digital image correlation method

open access: yesLatin American Journal of Solids and Structures
The purpose of this work is to investigate experimentally the effects of mixed-mode I/II loading on the fracture behavior of polymer mortars. Three point bend beam specimens with offcenter notch were used in plane-strain fracture toughness tests.
L.C.S. Nunes, J.M.L. Reis
doaj   +1 more source

The post-yield fracture of a ductile polymer film: Notch quality, essential work of fracture, crack tip opening displacement, and J-integral [PDF]

open access: yes, 2017
Double edge notched tension (DENT) specimens of a polyethylene terephthalate (PET) film were tested in an universal testing machine, measuring the displacements and the ligament lengths with a digital image correlation (DIC) system.
Arencón Osuna, David   +3 more
core   +2 more sources

Crack tip strain evolution and crack closure during overload of a growing fatigue crack [PDF]

open access: yesFracture and Structural Integrity, 2017
It is generally accepted that fatigue crack growth is retarded after an overload, which has been explained either by plasticity-induced crack closure or near-tip residual stress.
De-Qiang Wang   +3 more
doaj   +3 more sources

Shear behavior of steel fiber reinforced concrete using full-field displacements from digital image correlation

open access: yesMATEC Web of Conferences, 2017
Reinforced concrete beams with discrete hooked-end steel fibers at 0.5% volume fraction are tested with a shear span to depth (a/d) ratio equal to 1.8.
Gali Sahith, Subramaniam Kolluru.V.L.
doaj   +1 more source

Constraint evaluation and effects on selected fracture parameters for single-edge notched beam under four-point bending

open access: yesOpen Engineering, 2022
This article presents the results of analytical and numerical research focused on the numerical determination of selected fracture mechanics parameters for beams containing a crack in the state of four-point bending with the dominance of a plane strain ...
Graba Marcin
doaj   +1 more source

Determining mode I cohesive law of Pinus pinaster by coupling double cantilever beam test with digital image correlation [PDF]

open access: yesFracture and Structural Integrity, 2015
The direct identification of the cohesive law in pure mode I of Pinus pinaster is addressed. The approach couples the double cantilever beam (DCB) test with digital image correlation (DIC).
J. Xavier   +3 more
doaj   +1 more source

A numerical study of non-linear crack tip parameters [PDF]

open access: yesFracture and Structural Integrity, 2015
Crack closure concept has been widely used to explain different issues of fatigue crack propagation. However, different authors have questioned the relevance of crack closure and have proposed alternative concepts.
F.V. Antunes   +3 more
doaj   +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

Displacement Discontinuity Analysis of the Effects of Various Hydraulic Fracturing Parameters on the Crack Opening Displacement (COD) [PDF]

open access: yesJournal of Petroleum Science and Technology, 2018
The combination of horizontal drilling along with hydraulic fracturing has significantly improved the production of hydrocarbon reservoirs and made it possible to extract the relatively impermeable and uneconomical reservoirs.
Abolfazl Moradi   +3 more
doaj   +1 more source

Study of SENT specimens with a tilted notch to evaluate ductile tearing in spiral welded pipeline applications [PDF]

open access: yes, 2015
There is an increasing interest for the use of spiral welded pipelines in strain based design applications. Environmentally imposed loads are able to plastically deform the pipelines, meaning that their structural response is of the utmost importance ...
De Waele, Wim   +4 more
core   +2 more sources

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