Results 21 to 30 of about 31,900 (281)

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

Incremental displacement collocation method for the evaluation of tension softening curve of mortar [PDF]

open access: yes, 2012
The tension softening curve (TSC), showing the relationship between the cohesive tensile stress and crack opening displacement, is the constitutive law of the cohesive crack model.
Chen, HHN, Kwan, AKH, Su, RKL
core   +1 more source

Effect of Thickness on Fatigue Crack Propagation in Injection Molded Short Carbon Fiber Reinforced Plastics

open access: yesMATEC Web of Conferences, 2018
The influence of plate thickness on the fatigue crack propagation behavior was studied by using center-notched specimens which were cut from injection-molded plates of short carbon-fiber reinforced polyphenylene sulfide (PPS) at two fiber angles relative
Shimizu Kenichi   +2 more
doaj   +1 more source

Fatigue life prediction of z-fibre pinned composite laminate under mode I loading [PDF]

open access: yes, 2019
A hybrid method is presented combining linear elastic fracture mechanics with nonlinear damage mechanics that can predict the fatigue crack growth rate in z-fibre pinned composites under mode I loading.
Ayre, David   +3 more
core   +2 more sources

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

Effect of microstructure heterogeneity on the cryogenic fracture toughness of the dissimilar joint between SA645 and 304L made by laser welding

open access: yesMaterials Research Express, 2023
The cryogenic fracture toughness of the SA645/304L dissimilar weld, produced using continuous wave IPG fiber laser welding with a 0.3 mm beam offset towards the 304L side, and the microstructural effects on the fracture behavior were systematically ...
Fei Zhou   +6 more
doaj   +1 more source

Evolution of residual stress at a fatigue crack tip and its influence on crack tip shielding and plasticity

open access: yesJournal of Materials Research and Technology
The evolution of residual stresses (RS) at a crack tip and associated changes in crack shielding effects during fatigue crack growth (FCG) has a first order effect on the fatigue life of welded joints.
Zhe Zhang   +3 more
doaj   +1 more source

The Characteristics of Selected Triaxiality Measures of the Stresses for a C(T) Specimen Dominated by the Plane Strain State

open access: yesInternational Journal of Applied Mechanics and Engineering, 2020
The paper presents a comprehensive analysis of the stress field and selected triaxiality parameters near the crack tip for C(T) specimen dominated by the plane strain state using the finite element method.
M. Graba
doaj   +1 more source

Integral equations of a cohesive zone model for history-dependent materials and their numerical solution [PDF]

open access: yes, 2014
A nonlinear history-dependent cohesive zone (CZ) model of quasi-static crack propagation in linear elastic and viscoelastic materials is presented. The viscoelasticity is described by a linear Volterra integral operator in time.
Atkinson   +12 more
core   +2 more sources

Fracture Mechanics Characterization of an AnisotropicGeomaterial [PDF]

open access: yes, 2012
Argillites are considered worldwide as potential host rock for high level radioactive waste given the low permeability and strong adsorption potential.
Barpi, Fabrizio   +4 more
core   +1 more source

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