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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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Liu, Yinong
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (35/35 displayed)
- 2022Pullout behaviour of shape memory alloy fibres in self-compacting concrete and its relation to fibre surface microtopography in comparison to steel fibrescitations
- 2019Nonuniform transformation behaviour of NiTi in a discrete geometrical gradient designcitations
- 2019Modelling and experimental investigation of geometrically graded shape memory alloys with parallel design configurationcitations
- 2018Effect of thermal annealing on stress relaxation and crystallisation of ion beam sputtered amorphous Si1-xGex thin filmscitations
- 2017Functionally graded shape memory alloyscitations
- 2017Experiments on deformation behaviour of functionally graded NiTi structurescitations
- 2016Investigation of Thermal Expansion Effects on Si-Based MEMS Structurescitations
- 2014Pseudoelastic behaviour of perforated NiTi shape memory plates under tensioncitations
- 2013Finite element computational modelling and experimental investigation of perforated NiTi plates under tensioncitations
- 2013Hystoelastic deformation behaviour of geometrically graded NiTi shape memory alloyscitations
- 2012Mechanical behaviour of architectured NiTi materials in complex loading
- 2011Assessment of tension-compression asymmetry of NiTi using circular bulge testing of thin platescitations
- 2011Modélisation numérique EF du comportement mécanique superélastique de plaques fines planes trouées en NiTi
- 2011Thermally induced damages of PECVD SiNx thin filmscitations
- 2011Etude expérimentale du comportement d'une tôle perforée aléatoirement en NiTi superélastique
- 2009Roundrobin SMA modelingcitations
- 2009Elastohysteresis : un modèle 3D phénoménologique précis pour le comportement superélastique d’Alliage à Mémoire de Forme sous chargements complexes
- 2008Gradient anneal of functionally graded NiTicitations
- 2008Effect of annealing on deformation-induced martensite stabilisation of NiTicitations
- 2008Effect of pseudoelastic cycling on the Clausius-Clapeyron relation for stress-induced martensitic transformation in NiTicitations
- 2007Poisson's Ratio of Low-Temperature PECVD Silicon Nitride Thin Filmscitations
- 2007Design of functionally graded NiTi by heat treatmentcitations
- 2007Process condition dependence of mechanical and physical properties of silicon nitride thin filmscitations
- 2006Hysteretic Behaviour of Ferroelasticity of NiTi in Shearcitations
- 2006Thermal Stability of PECVD SiN/sub x/ Filmscitations
- 2006Influence of Thermomechanical Processing on the Superelastic Properties of a Ni-Rich Nitinol Shape Memory Alloycitations
- 2006Effect of oxidation on the chemical bonding structure of PECVD SiN thin filmscitations
- 2005Characterization of Mechanical Properties of Silicon Nitride Thin Films for MEMS Devices by Nanoindentation
- 2005Effects of deposition temperature on the mechanical and physical properties of silicon nitride thin filmscitations
- 2005On the origin of Luders-like deformation of NiTi shape memory alloyscitations
- 2005Determination of mechanical properties of PECVD silicon nitride thin films for tunable MEMS Fabry-Perot optical filterscitations
- 2005Thermal processing of polycrystalline NiTi shape memory alloyscitations
- 2004Mechanistic simulation of thermomechanical behaviour of thermoelastic martensitic transformations in polycrystalline shape memory alloyscitations
- 2004Hysteretic behaviour of a Cu-Zn-Al single crystal during superelastic shear deformationcitations
- 2004Evaluation Of Elastic Modulus And Stress Gradient Of PECVD Silicon Nitride Thin Films
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article
Pullout behaviour of shape memory alloy fibres in self-compacting concrete and its relation to fibre surface microtopography in comparison to steel fibres
Abstract
<p>Superelastic nickel-titanium shape memory alloy (SMA) can recover large strains. Hence, SMA fibres (SMAFs) have been incorporated into concrete to provide re-centring and crack-closing ability to the concrete. Since the structural performance of fibre-reinforced cementitious composites is significantly influenced by the fibre pullout mechanism, this research was focused on the pullout behaviour of SMAFs and their associated parameters. Single fibre pullout tests were performed on straight and hooked-end SMA and steel fibres (SFs) embedded in self-compacting concrete. The experimental investigation considers three variables: the type of hooked-end, embedded length, and loading rate. The full range of pullout load-slip behaviour was obtained under two different loading rates. The results were analysed in the slip corresponding to maximum pullout load, maximum tensile stress induced in fibre, material use factor, pullout energy, average and equivalent bond strength. Straight SMA fibres showed a weaker interfacial bond with concrete than steel counterparts. SMA fibre with 45° hooked-end showed the highest bond strength among SMA fibres considered in this study. The increase in the embedded length of most of SMAFs and SFs caused a significant increase in the pullout load without changing the configuration of the pullout load-slip curve. The pullout behaviour of SMAFs was almost rate-insensitive, whereas SFs exhibited evident rate sensitivity in the pullout. The observed differences between SMA and steel fibres were clarified based on fibre surface micro-topography and roughness and matrix damage. This difference was explained based on the surface micro-topography of fibres and matrix damage.</p>