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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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Marcellan, Alba
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (14/14 displayed)
- 2023Double Networks: Hybrid Hydrogels with Clustered Silicacitations
- 2023Role of Polymer–Particle Adhesion in the Reinforcement of Hybrid Hydrogelscitations
- 2023Mechanisms of damage and fracture of aramid fibers: Focus on the role of microfibril cooperativity in fracture toughnesscitations
- 2023Mechanisms of damage and fracture of aramid fibers: Focus on the role of microfibril cooperativity in fracture toughnesscitations
- 2021Macromolecular Additives to Turn a Thermoplastic Elastomer into a Self-Healing Materialcitations
- 2021Towards an understanding of the mechanical response of aramid fibers at the filament scale
- 2019In Situ tensile tests to analyze the mechanical response, crack initiation, and crack propagation in single polyamide 66 fiberscitations
- 2016Thermoresponsive Toughening in LCST-Type Hydrogels with Opposite Topology: From Structure to Fracture Propertiescitations
- 2016Multiaxial mechanical behavior of aramid fibers and identification of skin/core structure from single fiber transverse compression testingcitations
- 2016Multiaxial mechanical behavior of aramid fibers and identification of skin/core structure from single fiber transverse compression testingcitations
- 2015Multi-axial mechanical behavior of aramid fibers and identification of skin/core structure from single fiber transverse compression testing
- 2014Rheology over five orders of magnitude in model hydrogels: agreement between strain-controlled rheometry, transient elastography, and supersonic shear wave imagingcitations
- 2013Time Dependence of Dissipative and Recovery Processes in Nanohybrid Hydrogelscitations
- 2013Stress–Strain Relationship of Highly Stretchable Dual Cross-Link Gels: Separability of Strain and Time Effectcitations
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article
In Situ tensile tests to analyze the mechanical response, crack initiation, and crack propagation in single polyamide 66 fibers
Abstract
International audience ; Single fiber mechanical testing is challenging to perform, especially when the diameter is as small as tens of micrometers. For this reason, real‐time observations of crack propagation mechanisms have been rarely been investigated experimentally. This article presents experimental and numerical investigations of fracture of monofilamentary high performance polyamide 66 fibers. Their engineering stress–strain curves are compared. The mechanisms of failure starting from crack initiation until the final brittle fracture are studied by in situ tests in Scanning Electron and optical microscopes. Finite element modeling at the individual fiber scale has been performed in three‐dimensional (3D), as a reverse engineering method. The compliance method was used to determine the crack depth that triggers the final failure. The fracture toughness was numerically determined using the J‐integral concept, accounting for the geometry of the crack front (3D) together with plastic deformation. 3D meshes were designed especially from postmortem observations. The average value deduced was about 47 ± 7 kJ m−2, which will be discussed with other estimates using linear elastic fracture mechanics.