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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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Mishnaevsky, Leon
Technical University of Denmark
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (52/52 displayed)
- 2025Recycling carbon fibers by solvolysis: Effects of porosity and process parameterscitations
- 2023Recycling of wind turbine blades: Recent developmentscitations
- 2023High rate response of elastomeric coatings for wind turbine blade erosion protection evaluated through impact tests and numerical modelscitations
- 2023Development of Cellulose-Reinforced Polyurethane Coatings: A Novel Eco-Friendly Approach for Wind Turbine Blade Protectioncitations
- 2023Post-repair residual stresses and microstructural defects in wind turbine blades: Computational modellingcitations
- 2022Solid particle erosion studies of ceramic oxides reinforced water-based PU nanocomposite coatings for wind turbine blade protectioncitations
- 2022Multilayer leading edge protection systems of wind turbine blades
- 2022Multilayer leading edge protection systems of wind turbine blades:A review of material technology and damage modelling
- 2022Graphene/sol–gel modified polyurethane coating for wind turbine blade leading edge protection: Properties and performancecitations
- 2022Recent advances in MXene-based sensors for Structural Health Monitoring applications: A reviewcitations
- 2021Current Challenges of Wind Energy Development: Materials Science Aspectscitations
- 2021Capsule based self-healing composites: New insights on mechanical behaviour based on finite element analysiscitations
- 2021Micromechanical modeling of nacre-mimetic Ti3C2-MXene nanocomposites with viscoelastic polymer matrixcitations
- 2020Deformation of bioinspired MXene-based polymer composites with brick and mortar structures: A computational analysiscitations
- 2019Nanocellulose reinforced polymer composites: Computational analysis of structure-mechanical properties relationshipscitations
- 2019Multiscale molecular dynamics-FE modeling of polymeric nanocomposites reinforced with carbon nanotubes and graphenecitations
- 2019Structured interfaces and their effect on composite performancecitations
- 2019Nanoengineering of metallic alloys for machining tools: Multiscale computational and in situ TEM investigation of mechanismscitations
- 2018Impact fatigue damage of coated glass fibre reinforced polymer laminatecitations
- 2018Impact fatigue damage of coated glass fibre reinforced polymer laminatecitations
- 2018Development of Single Point Impact Fatigue Tester (SPIFT)
- 2018Development of Single Point Impact Fatigue Tester (SPIFT)
- 2018Hybrid metallic nanocomposites for extra wear-resistant diamond machining toolscitations
- 2017Nanocomposites for Machining Toolscitations
- 2016Hierarchical machining materials and their performancecitations
- 2016Nanomorphology of graphene and CNT reinforced polymer and its effect on damage: Micromechanical numerical studycitations
- 2015Carbon nanotube reinforced metal binder for diamond cutting toolscitations
- 2015Diamond and cBN hybrid and nanomodified cutting tools with enhanced performance: Development, testing and modellingcitations
- 2015Nanostructured interfaces for enhancing mechanical properties of composites: Computational micromechanical studiescitations
- 2015Micromechanical modelling of nanocrystalline and ultrafine grained metals: A short overviewcitations
- 2014Non-equilibrium grain boundaries in titanium nanostructured by severe plastic deformation: Computational study of sources of material strengtheningcitations
- 20143-D computational model of poly (lactic acid)/halloysite nanocomposites: Predicting elastic properties and stress analysiscitations
- 20143-D computational model of poly (lactic acid)/halloysite nanocomposites: Predicting elastic properties and stress analysiscitations
- 2014Nanostructured titanium-based materials for medical implants: Modeling and developmentcitations
- 2013Influence of fibers' orientation angle on failure mechanism of glass fiber reinforced polymer composites
- 2012Micromechanical analysis of nanocomposites using 3D voxel based material modelcitations
- 2012Micromechanics of hierarchical materials
- 2012Composite materials for wind energy applications: micromechanical modeling and future directionscitations
- 2012Materials of large wind turbine blades: Recent results in testing and modelingcitations
- 2011Explicit modeling the progressive interface damage in fibrous composite: Analytical vs. numerical approachcitations
- 2011Hierarchical composites: Analysis of damage evolution based on fiber bundle modelcitations
- 2011Elastic interaction of partially debonded circular inclusions. II. Application to fibrous compositecitations
- 2011Numerical simulation of progressive debonding in fiber reinforced composite under transverse loadingcitations
- 2009Strength and Reliability of Wood for the Components of Low-cost Wind Turbines: Computational and Experimental Analysis and Applicationscitations
- 2009Strength and Reliability of Wood for the Components of Low-cost Wind Turbines: Computational and Experimental Analysis and Applicationscitations
- 2009Statistics of Microstructure, Peak Stress and Interface Damage in Fiber Reinforced Compositescitations
- 2009Statistical modelling of compression and fatigue damage of unidirectional fiber reinforced compositescitations
- 2009Micromechanisms of damage in unidirectional fiber reinforced compositescitations
- 2009Micromechanisms of damage in unidirectional fiber reinforced composites:3D computational analysiscitations
- 2008Micromechanical modelling of unidirectional long fiber reinforced composites
- 2008Computational Micromechanics of Damage Initiation and Growth in Functionally Graded Composites
- 2007Computational mesomechanics of composites: Numerical analysis of the effect of microstructures of composites of strength and damage resistance
Places of action
Organizations | Location | People |
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article
Post-repair residual stresses and microstructural defects in wind turbine blades: Computational modelling
Abstract
Wind turbine blades require regular maintenance and repair. The post-repair reliability and lifetime depend on the quality and method of repair. Residual stresses present in the repaired sections of the blades are one of the reasons for reduced lifetime and premature failure of repaired blades. Residual stresses occur due to the thermal cycle used to cure the composite repair patch or adhesive and chemical shrinkage during curing. The presence of voids further aggravates the magnitude of the residual stresses. To investigate these effects, analytical models are used to study the cure kinetics and void evolution while the development of residual stresses during the post-gelation period of curing and the effect of the voids are obtained using coupled temperature-displacement analysis in ABAQUS. User subroutines (UEXPAN, HETVAL and UMAT) are used to define the chemical shrinkage, heat generation due to curing and cure-dependent modulus. Both hard and soft patch repair models are considered. It is found that the temperature cycle used affects both the time taken for complete cure and the residual stresses developed in the adhesive. Increasing the first dwell temperature decreases the time to cure but increases the residual stresses. Also, the presence of voids is found to cause stress concentration regions, with stresses increasing up to 2 to 2.5 times the average stresses. Therefore, a balance is needed to minimise the time taken for the repair process while maintaining residual stresses as low as possible, especially in wind turbine repair applications.