Results 31 to 40 of about 18,112 (283)

Establishing the fiber bridging law by an inverse analysis approach [PDF]

open access: yes, 2016
A method for establishing the relationship between stress and crack face opening for steel fiber–reinforced concrete (SFRC) beams under three-point loading was proposed using inverse analysis.
Karadelis, John N., Lin, Y.
core   +1 more source

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

Lifetime evaluation of concrete structures under sustained post-peak loading [PDF]

open access: yes, 2005
Experimental tests on crack propagation in concrete under constant post-peak loading are simulated using the finite element method and the cohesive crack model, in both Mode I and Mixed-mode conditions.
Barpi, Fabrizio, Valente, Silvio
core   +2 more sources

Prediction of Tensile Strain Capacity for X52 Steel Pipeline Materials Using the Extended Finite Element Method

open access: yesApplied Mechanics, 2021
Strain-based design (SBD) plays an important role in pipeline design and assessment of pipelines subjected to geo-hazards. Under such hazards, a pipe can be subjected to substantial plastic strains, leading to tensile failure at locations of girth weld ...
Nahid Elyasi   +7 more
doaj   +1 more source

Crack Extension Resistance of Normal-Strength Concrete Subjected to Elevated Temperatures

open access: yesAdvances in Materials Science and Engineering, 2014
Determination of the residual crack extension resistance curves (KR-curves) associated with cohesive force distribution on fictitious crack zone of complete fracture process is implemented in present research.
Jing Chen, Zhoudao Lu
doaj   +1 more source

Modelling the Crack Initiation and Propagation of Notched Rock Beam under the Three-Point Bending Load

open access: yesAdvances in Civil Engineering, 2020
Prediction of rock fracture is essential to understand the rock failure mechanism. The three-point bending test has been one of the most popular experiments for the determination of rock fracture parameters.
Xun Xi, Xu Wu, Qifeng Guo, Meifeng Cai
doaj   +1 more source

An embedded crack model for failure analysis of concrete solids [PDF]

open access: yes, 2010
We present a quadrilateral fi nite element with an embedded crack that can be used to model tensile fracture in two-dimensional concrete solids and the crack growth. The element has kinematics that can represent linear jumps in both normal and tangential
Brancherie, Delphine   +3 more
core   +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

Fracture toughness testing using photogrammetry and digital image correlation

open access: yesMethodsX, 2018
Digital image correlation (DIC) is an optical technique commonly used for measuring displacement fields by tracking artificially applied random speckle patterns, which can sometimes be a problem for tracking small-scale displacements. DIC is particularly
Wen Hao Kan   +7 more
doaj   +1 more source

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

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