| 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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Mikkelsen, Lars Pilgaard
Technical University of Denmark
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (71/71 displayed)
- 2024X-ray scattering tensor tomography based finite element modelling of heterogeneous materialscitations
- 2024Method Development of Compression Static Test Through Finite Element Modelling Optimisation
- 2024A Precise Prediction of the Chemical and Thermal Shrinkage during Curing of an Epoxy Resin
- 2024Sub-voxel based finite element modelling of fibre-reinforced composites
- 2024Finite element simulation of the driving mechanisms for cure-induced wrinkles
- 2024Finite Element Predictions of In-Situ 3D X-Ray CT Determined Compression Failure of Uni-Directional Composites
- 2023Fatigue Delaminations in Composites for Wind Turbine Blades with Artificial Wrinkle Defectscitations
- 2023Fatigue Delaminations in Composites for Wind Turbine Blades with Artificial Wrinkle Defectscitations
- 2023Dataset for scanning electron microscopy based local fiber volume fraction analysis of non-crimp fabric glass fiber reinforced compositescitations
- 2023High rate response of elastomeric coatings for wind turbine blade erosion protection evaluated through impact tests and numerical modelscitations
- 2023High rate response of elastomeric coatings for wind turbine blade erosion protection evaluated through impact tests and numerical modelscitations
- 2023Cure characterisation and prediction of thermosetting epoxy for wind turbine blade manufacturingcitations
- 2023Fatigue S-N curve approach for impact loading of hyper- and visco-elastic leading edge protection systems of wind turbine blades
- 2023The impact of the fiber volume fraction on the fatigue performance of glass fiber compositescitations
- 2022Observation of the interaction between transverse cracking and fibre breaks in uni-directional non-crimp fabric composites subjected to cyclic bending fatigue damage mechanismcitations
- 2022A special finite element method applied to off-axis tunnel cracking in laminatescitations
- 2022Multiscale characterisation of strains in semicrystalline polymers
- 2022Influence of Test Specimen Geometry on Probability of Failure of Composites Based on Weibull Weakest Link Theorycitations
- 2022An efficient stiffness degradation model for layered composites with arbitrarily oriented tunneling and delamination crackscitations
- 2022In-situ measurements of the load transferring shrinkage of thermosets used in composite materials for wind turbine blades
- 2021Quantifying effects of manufacturing methods on fiber orientation in unidirectional composites using structure tensor analysiscitations
- 2021Scanning electron microscopy datasets for local fibre volume fraction determination in non-crimp glass-fibre reinforced compositescitations
- 2021Approach for analysing off-axis tunnelling cracks in biaxially loaded laminatescitations
- 2020The fatigue damage evolution in the load-carrying composite laminates of wind turbine bladescitations
- 2020Understanding the mechanical response of glass and carbon fibres: stress-strain analysis and modulus determinationcitations
- 2020Dataset of non-crimp fabric reinforced composites for an X-ray computer tomography aided engineering processcitations
- 2020Performance of a fully grouted GFRP rock bolt under combined pull and shear loading
- 2020Experimental Investigation of the Damage at the Tip of Tunnelling Crack in Glass Fibre Composites
- 2020Tunneling cracks in arbitrary oriented off-axis laminacitations
- 2020Characterization of the fiber orientations in non-crimp glass fiber reinforced composites using structure tensorcitations
- 2019X-ray tomography data of compression tested unidirectional fibre composites with different off-axis anglescitations
- 2019Nanocellulose reinforced polymer composites: Computational analysis of structure-mechanical properties relationshipscitations
- 2019Visualizing composite materials for wind turbine blades using X-ray tomography
- 2019A Characterization Study Relating Cross-Sectional Distribution of Fiber Volume Fraction and Permeability
- 2019Fiber segmentation from 3D X-ray computed tomography of composites with continuous textured glass fibre yarns
- 2018A combined experimental/numerical investigation on hygrothermal aging of fiber-reinforced compositescitations
- 2018Ex-situ X-ray computed tomography, tension clamp and in-situ transilluminated white light imaging data of non-crimp fabric based fibre composite under fatigue loadingcitations
- 2018Observations of microscale tensile fatigue damage mechanisms of composite materials for wind turbine bladescitations
- 2018Three-dimensional X-ray tomography for multiscale characterization and fatigue damage investigations of composites for wind turbine blades.
- 2018Uncovering the Fatigue Degradation Mechanisms in Composite Materials Used in Wind Turbine Blades
- 2018Preface for the 39th Risø Symposium Proceedings, IOP publication
- 2018A systematic approach to transforming composite 3d images into meso-scale computational models
- 2017Revealing fatigue damage evolution in unidirectional composites for wind turbine blades using x-ray computed tomography
- 2017Fatigue damage evolution in quasi-unidirectional non-crimp fabric based composite materials for wind turbine blades
- 2017Individual fibre segmentation from 3D X-ray computed tomography for characterising the fibre orientation in unidirectional composite materialscitations
- 2017Influence of curing profile and fibre architecture on the fatigue resistance of composite materials for wind turbine blades
- 2017Studying fatigue damage evolution in uni-directional composites using x-ray computed tomography
- 2017Mechanical properties of biaxially strained poly(L-lactide) tubes: Strain rate and temperature dependencecitations
- 2017A strain gauge
- 2016Strong and light-weight materials made of reinforced honeycomb sandwich structures
- 2016Fibre Bragg Grating Sensor Signal Post-processing Algorithm: Crack Growth Monitoring in Fibre Reinforced Plastic Structurescitations
- 2016A strain gauge
- 2016Experimental determination of the micro-scale strength and stress-strain relation of an epoxy resincitations
- 2016Characterization Of Biaxial Strain Of Poly(L-Lactide) Tubescitations
- 2016Approach for investigations of progressive fatigue damage in 3D in fibre composites using X-ray tomography
- 2015Elastocaloric cooling device: Materials and modeling
- 2015Crack Detection in Fibre Reinforced Plastic Structures Using Embedded Fibre Bragg Grating Sensors: Theory, Model Development and Experimental Validationcitations
- 2015Structural health monitoring method for wind turbine trailing edge: Crack growth detection using Fibre Bragg Grating sensor embedded in composite materials
- 2015Crack Growth Monitoring by Embedded Optical Fibre Bragg Grating Sensors: Fibre Reinforced Plastic Crack Growing Detectioncitations
- 2015Finite Element Verification of Non-Homogeneous Strain and Stress Fields during Composite Material Testing
- 2015Embedded Fibre Bragg Grating Sensor Response Model: Crack Growing Detection in Fibre Reinforced Plastic Materialscitations
- 2015Small scale plasticity and compressive properties of composites
- 2015Damage tolerant design and condition monitoring of composite material and bondlines in wind turbine blades: Failure and crack propagation
- 2015From measurements errors to a new strain gauge design for composite materials
- 2015Crack growth monitoring in composite materials using embedded optical Fiber Bragg Grating sensor
- 2015From Measurements Errors to a New Strain Gauge Design
- 2014Damage evolution under cyclic multiaxial stress state: A comparative analysis between glass/epoxy laminates and tubescitations
- 2014Correction of Gauge Factor for Strain Gauges Used in Polymer Composite Testingcitations
- 2013Influence of Temperature on Mechanical Properties of Jute/Biopolymer Compositescitations
- 2013Influence of Temperature on Mechanical Properties of Jute/Biopolymer Compositescitations
- 2009Finite element implementation and numerical issues of strain gradient plasticity with application to metal matrix compositescitations
Places of action
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conferencepaper
Influence of curing profile and fibre architecture on the fatigue resistance of composite materials for wind turbine blades
Abstract
The fatigue performance of unidirectional glass fibre reinforced epoxy is found to be highly dependent on the manufacturing conditions, where a low manufacturing temperature, for the investigated wind turbine relevant composite material system, is found to improve the tension/tension fatigue life-time with a factor of 10 if<br/>compared with a corresponding laminate manufactured at a high manufacturing temperature. It should be noted that a low manufacturing temperature will increased the required mould time significantly and thereby influence the cost of the manufactured wind turbine blade. In addition, the thick laminates typically used in the root section of the wind turbine blades will experience significant exothermically generated temperature raise during the curing process increasing the local manufacturing temperature. The tension/tension fatigue life-time1 has been investigated using 3D x-ray computer tomography. Thereby, it has been found during ex-situ fatigue studies, that the fatigue failure mechanism is highly influenced by transverse cracking in the so-called backing bundles which is present in order to ease the handling during the dry fabric layup during wind turbine blade manufacturing. It is a failure mechanism which is judge to be highly influenced by the magnitude of the residual stresses exhibit in the matrix material and therefore also in the secondary oriented backing bundles. Using fibre Bragg grated optical fibres2; the build-up of the cure-induced strains in the fibre-reinforcement has been investigated during a variety of curing profiles of the used epoxy material system. Thereby, it is possible to observe that even though the overall chemical shrinkage of the epoxy material system is independent on the chosen curing profile, the location of the gel-point and thereby the amount of shrinkage occurring in the solid state is highly influenced. During the study, it is therefore documented that even though a short mould time may be beneficial lowering the manufacturing cost, it has a drawback on the fatigue life time. In addition, it can be expected that the internal part of the thick laminates used in the root sections of a wind turbine blade has a lower fatigue resistance compared with the composite materials used elsewhere.