Delamination Fracture Behavior of Unidirectional Carbon Reinforced Composites Applied to Wind Turbine Blades
One of the materials that is used widely for wind turbine blade manufacturing are fiber-reinforced composites. Although glass fiber reinforcement is the most used in wind turbine blades, the use of carbon fiber allows larger blades to be manufactured due to their better mechanical characteristics. S...
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MDPI AG
2021-01-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/14/3/593 |
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| author | Ana Boyano Jose Manuel Lopez-Guede Leyre Torre-Tojal Unai Fernandez-Gamiz Ekaitz Zulueta Faustino Mujika |
| author_facet | Ana Boyano Jose Manuel Lopez-Guede Leyre Torre-Tojal Unai Fernandez-Gamiz Ekaitz Zulueta Faustino Mujika |
| author_sort | Ana Boyano |
| collection | DOAJ |
| description | One of the materials that is used widely for wind turbine blade manufacturing are fiber-reinforced composites. Although glass fiber reinforcement is the most used in wind turbine blades, the use of carbon fiber allows larger blades to be manufactured due to their better mechanical characteristics. Some turbine manufacturers are using carbon fiber in the most critical parts of the blade design. The larger rotors are exposed to complex loading conditions in service. One of the most relevant structures on a wind turbine blade is the spar cap. It is usually manufactured by means of unidirectional laminates, and one of its major failures is the delamination. The determination of material features that influence delamination initiation and advance by appropriate testing is a fundamental topic for the study of composite delamination. The fracture behavior is studied across coupons of carbon fiber reinforcement epoxy laminates. Fifteen different test conditions have been analyzed. Fracture surfaces for different mode ratios have been explored using optical microscope and scanning electron microscope. Experimental results shown in the paper for critical fracture parameters agree with the theoretically expected values. Therefore, this experimental procedure is suitable for wind turbine blade material characterizing at the initial coupon-scale research level. |
| first_indexed | 2024-03-09T03:30:29Z |
| format | Article |
| id | doaj.art-620e97703e224165858371bfd6975cc3 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-09T03:30:29Z |
| publishDate | 2021-01-01 |
| publisher | MDPI AG |
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| series | Materials |
| spelling | doaj.art-620e97703e224165858371bfd6975cc32023-12-03T14:55:37ZengMDPI AGMaterials1996-19442021-01-0114359310.3390/ma14030593Delamination Fracture Behavior of Unidirectional Carbon Reinforced Composites Applied to Wind Turbine BladesAna Boyano0Jose Manuel Lopez-Guede1Leyre Torre-Tojal2Unai Fernandez-Gamiz3Ekaitz Zulueta4Faustino Mujika5Mechanical Engineering Department, Faculty of Engineering of Vitoria-Gasteiz, University of the Basque Country, UPV/EHU, Nieves Cano 12, 01006 Vitoria-Gasteiz, SpainSystems Engineering and Automation Control Department, Faculty of Engineering of Vitoria-Gasteiz, University of the Basque Country, UPV/EHU, Nieves Cano 12, 01006 Vitoria-Gasteiz, SpainMining and Metallurgical Engineering and Materials Science Department, Faculty of Engineering of Vitoria-Gasteiz, University of the Basque Country, UPV/EHU, Nieves Cano 12, 01006 Vitoria-Gasteiz, SpainNuclear Engineering and Fluid Mechanics Department, Faculty of Engineering of Vitoria-Gasteiz, University of the Basque Country, UPV/EHU, Nieves Cano 12, 01006 Vitoria-Gasteiz, SpainSystems Engineering and Automation Control Department, Faculty of Engineering of Vitoria-Gasteiz, University of the Basque Country, UPV/EHU, Nieves Cano 12, 01006 Vitoria-Gasteiz, SpainMechanical Engineering Department, Faculty of Engineering Gipuzkoa, University of the Basque Country, UPV/EHU, Plaza Europa 1, 20018 Donostia-San Sebastián, SpainOne of the materials that is used widely for wind turbine blade manufacturing are fiber-reinforced composites. Although glass fiber reinforcement is the most used in wind turbine blades, the use of carbon fiber allows larger blades to be manufactured due to their better mechanical characteristics. Some turbine manufacturers are using carbon fiber in the most critical parts of the blade design. The larger rotors are exposed to complex loading conditions in service. One of the most relevant structures on a wind turbine blade is the spar cap. It is usually manufactured by means of unidirectional laminates, and one of its major failures is the delamination. The determination of material features that influence delamination initiation and advance by appropriate testing is a fundamental topic for the study of composite delamination. The fracture behavior is studied across coupons of carbon fiber reinforcement epoxy laminates. Fifteen different test conditions have been analyzed. Fracture surfaces for different mode ratios have been explored using optical microscope and scanning electron microscope. Experimental results shown in the paper for critical fracture parameters agree with the theoretically expected values. Therefore, this experimental procedure is suitable for wind turbine blade material characterizing at the initial coupon-scale research level.https://www.mdpi.com/1996-1944/14/3/593wind turbine bladesdelaminationfracture tests |
| spellingShingle | Ana Boyano Jose Manuel Lopez-Guede Leyre Torre-Tojal Unai Fernandez-Gamiz Ekaitz Zulueta Faustino Mujika Delamination Fracture Behavior of Unidirectional Carbon Reinforced Composites Applied to Wind Turbine Blades Materials wind turbine blades delamination fracture tests |
| title | Delamination Fracture Behavior of Unidirectional Carbon Reinforced Composites Applied to Wind Turbine Blades |
| title_full | Delamination Fracture Behavior of Unidirectional Carbon Reinforced Composites Applied to Wind Turbine Blades |
| title_fullStr | Delamination Fracture Behavior of Unidirectional Carbon Reinforced Composites Applied to Wind Turbine Blades |
| title_full_unstemmed | Delamination Fracture Behavior of Unidirectional Carbon Reinforced Composites Applied to Wind Turbine Blades |
| title_short | Delamination Fracture Behavior of Unidirectional Carbon Reinforced Composites Applied to Wind Turbine Blades |
| title_sort | delamination fracture behavior of unidirectional carbon reinforced composites applied to wind turbine blades |
| topic | wind turbine blades delamination fracture tests |
| url | https://www.mdpi.com/1996-1944/14/3/593 |
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