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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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Zhang, Bing
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Topics
Publications (18/18 displayed)
- 2023Fatigue Delaminations in Composites for Wind Turbine Blades with Artificial Wrinkle Defectscitations
- 2023Fatigue Delaminations in Composites for Wind Turbine Blades with Artificial Wrinkle Defectscitations
- 2022Embedding artificial neural networks into twin cohesive zone models for composites fatigue delamination prediction under various stress ratios and mode mixitiescitations
- 2022How reproducible are surface areas calculated from the BET equation?citations
- 2022How reproducible are surface areas calculated from the BET equation?citations
- 2022How Reproducible are Surface Areas Calculated from the BET Equation?citations
- 2022How Reproducible are Surface Areas Calculated from the BET Equation?citations
- 2022How Reproducible are Surface Areas Calculated from the BET Equation?citations
- 2022Sensing delamination in composites reinforced by ferromagnetic Z-pins via electromagnetic inductioncitations
- 2021A printability assessment framework for fabricating low variability nickel-niobium parts using laser powder bed fusion additive manufacturingcitations
- 2021Embedding artificial neural networks into twin cohesive zone models for composites fatigue delamination prediction under various stress ratios and mode mixitiescitations
- 2021Effects of ferromagnetic & carbon-fibre Z-Pins on the magnetic properties of compositescitations
- 2021How Reproducible Are Surface Areas Calculated from the BET Equation?citations
- 2021Effect of saw-tooth ply drops on the mechanical performance of tapered composite laminatescitations
- 2020Composites fatigue delamination prediction using double load envelopes and twin cohesive modelscitations
- 2020An experimental and numerical investigation into damage mechanisms in tapered laminates under tensile loadingcitations
- 2019Assessing Printability Maps in Additive Manufacturing of Metal Alloyscitations
- 2017An integrated numerical model for investigating guided waves in impact-damaged composite laminatescitations
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article
Fatigue Delaminations in Composites for Wind Turbine Blades with Artificial Wrinkle Defects
Abstract
Out-of-plane wrinkles are manufacturing defects that affect the structural performance of wind turbine blades under fatigue. Glass Fiber Reinforced Polymer (GFRP) laminated specimens embedded with artificial wrinkle defects at two severity ratios (amplitude/half-wavelength) show different resistance to cyclic loading when tested under tension-compression fatigue. This work presents the validation of a fatigue formulation for the prediction of fatigue damage from wrinkles characteristic of wind turbine blades. The validation is performed through numerical models combined with experimental tests in which the fracture framework aims at predicting crack initiation and delamination propagation. The experimental fatigue program loaded the specimens with R = −1 to assess damage growth. The fatigue damage mechanism is quantified as a stiffness degradation, and the damage level is classified into five phases. Comparing the two severity types of wrinkles, the fatigue lifetime for equal external loading differs by approximately two decades. This difference is also captured by the numerical predictions. The lower the aspect ratio (AR), the higher the defect resistance to reversed fatigue loading. The numerical models captured the qualitative behavior of the SN curves and delamination fracture path and location observed in the experiments.