| 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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Jakobsen, Johnny
Aalborg University
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (32/32 displayed)
- 2024Bolted joint method for composite materials using a novel fiber/metal patch as hole reinforcement—Improving both static and fatigue propertiescitations
- 2023A matter of coursecitations
- 2023A matter of course:Generating optimal manufacturing instructions from a structural layup plan of a wind turbine bladecitations
- 2022Comprehending the Bending: A Comparison of Different Test Setups for Measuring the Out-of-Plane Flexural Rigidity of a UD Fabriccitations
- 2022It‘s on a Roll: Draping Courses of Glass Fiber Fabric in a Wind Turbine Blade Mold by Means of Optimization
- 2021A simple MATLAB draping code for fiber-reinforced composites with application to optimization of manufacturing process parameterscitations
- 2021Pure and simple:investigating the in-plane shear kinematics of a quasi-unidirectional glass fiber non-crimp fabric using the bias-extension testcitations
- 2020Design of Automated Robotic System for Draping Prepreg Composite Fabricscitations
- 2020Design of Automated Robotic System for Draping Prepreg Composite Fabricscitations
- 2020Exploration of irreversible residual stresses in a carbon/epoxy composite
- 2020Will it Crease or Cease? A study of Debulking of Air Pockets in Automated Prepreg Composite Layupcitations
- 2020Will it Crease or Cease?:A study of debulking of air pockets in automated prepreg composite layupcitations
- 2019Fatigue damage simulation of tension-tension loaded glass/polyester fiber composites with thickness tapering effectscitations
- 2019Fatigue damage simulation of tension-tension loaded glass/polyester fiber composites with thickness tapering effectscitations
- 2019The Issue of the Tissue:Determining Feasible Robot Draping Sequences for Woven Prepreg Plies
- 2019Generation of Feasible Gripper Trajectories in Automated Composite Draping by means of Optimizationcitations
- 2019256 shades of graycitations
- 2019256 shades of gray:Application of image processing to evaluate the effect of sample geometry and constant shear strain rates in the picture-frame testcitations
- 2019The Issue of the Tissue
- 2017Prediction of fatigue damage in tapered laminates
- 2017Prediction of fatigue damage in tapered laminates
- 2017Modeling of Prepregs during Automated Draping Sequences
- 2016Local fatigue behavior in tapered areas of large offshore wind turbine bladescitations
- 2016Local fatigue behavior in tapered areas of large offshore wind turbine bladescitations
- 2016Effect of cure cycle on enthalpy relaxation and post shrinkage in neat epoxy and epoxy compositescitations
- 2015Investigation of the residual stress state in an epoxy based specimen
- 2014A comparison of gel point for a glass/epoxy composite and a neat epoxy material during isothermal curingcitations
- 2013Thermo-mechanical Characterisation of In-plane Properties for CSM E-glass Epoxy Polymer Composite Materialscitations
- 2013Thermo-mechanical Characterisation of In-plane Properties for CSM E-glass Epoxy Polymer Composite Materials:Part 2: Young's Moduluscitations
- 2013Thermo-Mechanical Characterisation of In-Plane Properties for CSM E-glass Epoxy Polymer Composite Materials – Part 1citations
- 2013Thermo-Mechanical Characterisation of In-Plane Properties for CSM E-glass Epoxy Polymer Composite Materials – Part 1:Thermal and Chemical Straincitations
- 2007New Knowledge on Composite and Sandwich Structures
Places of action
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document
Local fatigue behavior in tapered areas of large offshore wind turbine blades
Abstract
Thickness transitions in load carrying elements lead to improved geometries and efficient material utilization. However, these transitions may introduce localized areas with high stress concentrations and may act as crack initiators that could potentially cause delamination and further catastrophic failure of an entire blade structure. The local strength degradation under an ultimate static loading, subsequent to several years of fatigue, is predicted for an offshore wind turbine blade. Fatigue failure indexes of different damage modes are calculated using a sub-modeling approach. Multi axial stresses are accounted for using a developed failure criterion with residual strengths instead of the virgin strengths. Damage initiation is predicted by including available Wohler curve data of E-Glass fabrics and epoxy matrix into multi-axial fatigue failure criteria. As a result of this study, proper knock-down factors for ply-drop effects in wind turbine blades under multi-axial static and fatigue loadings can be obtained.