Impact fatigue damage of coated glass fibre reinforced polymer laminate
| Autor: | Nicolai Frost-Jensen Johansen, Yukihiro Kusano, Vladimir Fedorov, Kaj Kvisgaard Borum, Jakob Ilsted Bech, Anthony Fraisse, Malcolm McGugan, Leon Mishnaevsky |
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| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Materials science
Turbine blade 020209 energy Gelcoat Glass fiber Impact fatigue X-ray computed 02 engineering and technology engineering.material law.invention Acoustic emission Coating Natural rubber law 0202 electrical engineering electronic engineering information engineering Composite material Tomography Renewable Energy Sustainability and the Environment Finite element method Ultrasound scanning Glass fibre reinforced polymer visual_art engineering visual_art.visual_art_medium Ultrasonic sensor Leading edge erosion |
| Zdroj: | Fraisse, A, Bech, J I, Borum, K K, Fedorov, V, Johansen, N F-J, McGugan, M, Mishnaevsky, L & Kusano, Y 2018, ' Impact fatigue damage of coated glass fibre reinforced polymer laminate ', Renewable Energy, pp. 1102-1112 . https://doi.org/10.1016/j.renene.2018.04.043 |
| Popis: | Impact fatigue caused by rain droplets, also called rain erosion, is a severe problem for wind turbine blades and aircraft. In this work, an assessment of impact fatigue on a glass fibre reinforced polymer laminate with a gelcoat is presented and the damage mechanisms are investigated. A single point impact fatigue tester is developed to generate impact fatigue damage and SN data. Rubber balls are repeatedly impacted on a single location of the coated laminate. Each impact induces transient stresses in the coated laminate. After repeated impacts, these stresses generate cracks, leading to the removal of the coating and damage to the laminate. High-resolution digital imaging is used to determine the incubation time until the onset of coating damage, and generate an SN curve. An acoustic emission sensor placed at the back of the laminate monitors changes in acoustic response as damage develops in the coated laminate. The subsurface cracks are studied and mapped by 3D X-ray computed tomography. A finite element method model of the impact shows the impact stresses in the coating and the laminate. The stresses seen in the model are compared to cracks found by 3D tomography. The damage is also evaluated by ultrasonic scanning. |
| Databáze: | OpenAIRE |
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