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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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Smith, Paul A.
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Topics
Publications (6/6 displayed)
- 2018Microwave filters based on novel dielectric split-ring resonators with high unloaded quality factorscitations
- 2015Late-stage fatigue damage in a 3D orthogonal non-crimp woven composite: an experimental and numerical studycitations
- 2014Developing toughened aromatic polybenzoxazines using thermoplastic oligomers and telechelics, part 1:Preparation and characterization of the functionalized oligomerscitations
- 2014Developing toughened aromatic polybenzoxazines using thermoplastic oligomers and telechelics, part 1citations
- 2014Toughening mechanisms in aromatic polybenzoxazines using thermoplastic oligomers and telechelicscitations
- 2013Structure and microwave dielectric properties of low firing Bi2Te2W3O16 ceramicscitations
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article
Late-stage fatigue damage in a 3D orthogonal non-crimp woven composite: an experimental and numerical study
Abstract
Late-stage fatigue damage of an E-glass/epoxy 3D orthogonal non-crimp textile composite loaded in the warp direction has been investigated using a combination of mechanical testing, X-ray micro computed tomography (μCT), optical microscopy and finite element modelling. Stiffness reduction and energy dissipated per cycle were found to be complementary measurements of damage accumulation, occurring in three stages: a first stage characterised by rapid changes, a more quiescent second stage, followed by a third stage where the (decreasing) stiffness and (increasing) energy dissipation change irregularly and then rapidly, to failure. Microscopy of specimens cycled into the transition between the second and third stages showed macroscopic accumulations of fibre fractures in sections of warp tows which lying adjacent to the surface weft tows which are crowned-over by the Z-tows. At these locations, the warp tow fibres are subjected to stress concentrations both from transverse weft tow matrix cracks and resin pocket cracks.