| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Legarth, Brian Nyvang
Technical University of Denmark
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (30/30 displayed)
- 2024Particle-matrix debonding with Strength-Differential effects
- 2024Temperature-dependent changes in thermoplastic sandwich core properties and failure mechanisms using four-point tests with short specimens
- 2024Mode-III fracture toughness measurements of foam-cored sandwich composites using a constrained Shear-Torsion-Bending specimen
- 2022A Modified Shear Torsion Bending Test for Mode-III Fracture Toughness Measurements of Face/Core Interfaces in Sandwich Composites
- 2022A special finite element method applied to off-axis tunnel cracking in laminatescitations
- 2022An efficient stiffness degradation model for layered composites with arbitrarily oriented tunneling and delamination crackscitations
- 2021Introduction to the finite element solid formulation
- 2021A novel test fixture for mode III fracture characterization of monolithic laminates and composite sandwich specimenscitations
- 2021Approach for analysing off-axis tunnelling cracks in biaxially loaded laminatescitations
- 2019Development of a Mode III Test Rig for Composite Laminates and Sandwich Face/Core Fracture Characterization
- 2015Plasticity dependent damage evolution in composites with strain-gradient effectscitations
- 2015Effect of fiber positioning on mixed-mode fracture of interfacial debonding in compositescitations
- 2015Effect of fiber positioning on mixed-mode fracture of interfacial debonding in compositescitations
- 2014A numerical study of the influence of microvoids in the transverse mechanical response of unidirectional compositescitations
- 2014A numerical study of the influence of microvoids in the transverse mechanical response of unidirectional compositescitations
- 2014A numerical study of the influence of microvoids in the transverse mechanical response of unidirectional compositescitations
- 2014On the homogenization of metal matrix composites using strain gradient plasticitycitations
- 2013Experimental and numerical study of the micro-mechanical failure in composites
- 2013Experimental and numerical study of the micro-mechanical failure in composites
- 2013A deformation mechanism map for polycrystals modeled using strain gradient plasticity and interfaces that slide and separatecitations
- 2013Micromechanical modeling of unidirectional composites with uneven interfacial strengthscitations
- 2013Micromechanical modeling of unidirectional composites with uneven interfacial strengthscitations
- 2013A new macroscopically anisotropic pressure dependent yield function for metal matrix composite based on strain gradient plasticity for the microstructurecitations
- 2013Fracture of anisotropic materials with plastic strain-gradient effects
- 2012Debonding analyses in anisotropic materials with strain- gradient effects
- 2012Debonding Analyses in Anisotropic Materials with Strain-Gradient Effects
- 2011Size-effects on yield surfaces for micro reinforced compositescitations
- 2010Debonding failure and size effects in micro reinforced compositescitations
- 2005Effects of geometrical anisotropy on failure in a plastically anisotropic metal
- 2004Particle debonding using different yield criteriacitations
Places of action
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article
Effect of fiber positioning on mixed-mode fracture of interfacial debonding in composites
Abstract
Under transverse tensile loading, fibers oriented perpendicular to the tensile direction can undergo fiber/matrix debonding. Experiments show that the first stage of fiber/matrix interface debonding is mode-I dominated fracture with very fast crack growth rate. Subsequent stable crack propagation along the interface is due to mixed mode I/II fracture. The aim of this study is to explore ways to stabilize the early stage of debonding so that it becomes possible to determine the mixed mode interfacial fracture properties for the entire mode-mixity range by in-situ observations. Therefore, the objective of this study is to stabilize crack initiation in the dominant mode-I fracture by changing the position of one fiber with its neighboring fiber or hole using the finite element analysis. The progressive fiber/matrix debonding is studied by focusing on the interaction of one fiber with its neighboring fiber or hole. The results show that decrease of the position angle stabilize the crack growth at the interface in the ligaments. This effect is more significant in the cases with small ligament thickness. In the two-fiber model and at very small ligaments the results show that the crack growth stops when the crack tips meet each other in the ligament and further crack growth is under dominant mode-II fracture. In the fiber-hole model, both the crack initiation and propagation are stabilized by decrease of the position angles at very thin ligaments. This paper suggests to use two fibers instead of a single fiber in order to ease the characterization of interfacial properties. [All rights reserved Elsevier].