| 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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Karhu, Marjaana
VTT Technical Research Centre of Finland
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (27/27 displayed)
- 2023Investigation of Novel Nano-carbide WC/CoCr Coatings Applied by HVAFcitations
- 2022Investigation of novel nano-carbide WC/CoCr coatings applied by HVAF
- 2022Mining tailings as a raw material for glass-bonded thermally sprayed ceramic coatings : Microstructure and propertiescitations
- 2020Utilizing mixed-mineralogy ferroan magnesite tailings as the source of magnesium oxide in magnesium potassium phosphate cementcitations
- 2020Utilizing mixed-mineralogy ferroan magnesite tailings as the source of magnesium oxide in magnesium potassium phosphate cementcitations
- 2020Utilization of Mineral Side Streams in High Temperature Ceramic Materials:Dissertation
- 2020Mining tailings as a raw material for glass-bonded thermally sprayed ceramic coatings:Microstructure and propertiescitations
- 2019Magnesite-rich mining tailings as a raw material for refractory ceramics:Microstructural and thermal analysiscitations
- 2019Mining tailings as raw materials for reaction-sintered aluminosilicate ceramics : Effect of mineralogical composition on microstructure and propertiescitations
- 2019Mining tailings as raw materials for reaction-sintered aluminosilicate ceramicscitations
- 2019Mining tailings as raw materials for reaction-sintered aluminosilicate ceramics:Effect of mineralogical composition on microstructure and propertiescitations
- 2018Nanocrystalline WC-Co HVAF Coatings by Utilizing Novel Powder Manufacturing Route Using Water-Soluble Raw Materialscitations
- 2017Reaction heat utilization in aluminosilicate-based ceramics synthesis and sintering
- 2017Nanostructural WC-Co coatings by utilizing novel powder manufacturing route using water soluble raw materials
- 2016Preparing nano structural WC-Co powders by utilizing soluble raw materials by spray drying and synthesis method
- 2016Preparing nano-structural WC-Co coatings by utilizing novel powder manufacturing route
- 2016Synthesis of nano structural Cr 3 C 2 powders from water soluble precursors
- 2016Reaction heat utilization potential in mullite and spinel based ceramics synthesis and sintering
- 2016Exothermic assisted synthesis of mullite and spinel based ceramics
- 2016Reaction heat potential utilization in mullite and spinel based ceramics synthesis and sintering
- 2016Synthesis of nano structural Cr3C2 powders from water soluble precursors
- 2015Synthesis of nano structural WC-Co powders from water soluble precursors: effects of carbon content to chemical and phase structure
- 2015Synthesis of nano structural WC-Co powders from water soluble precursors:Effects of tungsten source and synthesis atmosphere on chemical and phase structure evolutions
- 2015Sintering of nano structural WC with cobalt matrix synthesised from soluble raw materials
- 2015Novel titanium carbide based hard metal alternative for traditional WC-Co
- 2012Microstructure analysis and damage patterns of thermally cycled Ti-49.7Ni (at.%) wirescitations
- 2011R-phase actuated SMA composites in adaptive wind turbine blade trailing edge
Places of action
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document
R-phase actuated SMA composites in adaptive wind turbine blade trailing edge
Abstract
There is an interest of doubling or quadrupling the ratedpower of wind turbines from the present maximum of about5 MW,especially for offshore applications. This increases theblade length to about 80 or 100 m. The growth in size ofblades is notfeasible using the present technologies and materials.Also the slenderness of wind turbines leads to increasedimportance ofvibration and fatigue control of blades and supportingstructures. These increasing requirements call for newstructural concepts and advanced materials and also formore adaptive solutions. Better control of the turbinesuch as advanced blade pitch control or shape control ortheir combination has to be developed and utilized. Theone key issue is reduction of the fatigue loads of bladesand that way increasing the life of the structure andenabling use of the turbine at higher wind speeds andgusty winds, which would increase the power production.Shape memory alloy (SMA) composites as morphingstructures have been studied widely. In this studypossibilities of SMA composites based on utilization ofpre-martensitic R-phase transformation were determined.Special treatments to achieve pure R-phase transformationwere developed and thermo-mechanical properties of thewires were determined. R-phase actuation has been foundto offer several beneficial features compared traditionalaustenitemartensite transformation. The studies revealedthat hysteresis can be remarkably decreased, leading tohigher operating frequency at lower temperatures. One ofthe most important features of R-phase actuated wires istheir superior resistance against functional fatiguecompared to traditional SMA wires. A novel manufacturingroute for SMA composites was developed.Laminate and actuator test structures were designed by FEmodeling. R-phase actuated SMA composites weredemonstrated atwind turbine blade adaptive trailing edge. In laboratorycondition 5° change in camber of trailing edge wasachieved when wires were heated up 60 °C. Effect of windspeed on the achieved shape changes was studied bypreliminary wind tunnel tests.