Assessment on UV ageing of photopolymerizable resin repaired GFRPs for wind turbine blades

The photopolymerizable resin repair method was investigated for the high altitude location and harsh remediation condition of wind turbine blades, because of its short operation time and low equipment requirement. This paper demonstrates the durability under ultraviolet (UV) irradiation environment of a photo- or thermal-polymerizable resin repaired GFRP, which is the essential material for manufacturing wind turbine blades. During the experiments, the fundamental GFRP specimens fabricated by wet prepreg manufacture technique were pre-damaged, and then repaired by attaching external photo- or thermal-polymerizable resin-impregnated glass fabric patches, followed by UV curing and room temperature (RT) curing, respectively. Long-term UV ageing (over 1300 h) was conducted to repaired specimens by employing a 365 nm wavelength UV lamp. The mechanical properties, thermal properties and surface morphology were evaluated before and after ageing. The results revealed that the UV cured specimens have better mechanical properties and stability compared to RT cured specimens in UV ageing environments.

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On the determination of the mechanical properties of wind turbine blades: Geometrical aspects of line based algorithms

Renewable Energy ◽

10.1016/j.renene.2016.12.027 ◽

2017 ◽

Vol 105 ◽

pp. 55-65

Author(s):

C. Martín Saravia ◽

Claudio D. Gatti ◽

José M. Ramirez

Keyword(s):

Mechanical Properties ◽

Wind Turbine ◽

Turbine Blades ◽

Wind Turbine Blades

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Novel Fabrication Method of Integral Wind Turbine Blades by In-situ UV Curing Automated Fiber Placement

Journal of Mechanical Engineering ◽

10.3901/jme.2014.11.037 ◽

2014 ◽

Vol 50 (11) ◽

pp. 37

Author(s):

Xiaohui ZHANG

Keyword(s):

Wind Turbine ◽

Turbine Blades ◽

Uv Curing ◽

Fabrication Method ◽

Wind Turbine Blades ◽

Fiber Placement ◽

Automated Fiber Placement

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Experimental Characterization of Hybrid and Non-Hybrid Polymer Composites at Elevated Temperatures

International Journal of Engineering Research in Africa ◽

10.4028/www.scientific.net/jera.36.37 ◽

2018 ◽

Vol 36 ◽

pp. 37-52 ◽

Cited By ~ 2

Author(s):

Getahun Aklilu ◽

Sarp Adali ◽

Glen Bright

Keyword(s):

Mechanical Properties ◽

Carbon Fibre ◽

Wind Turbine ◽

Elevated Temperatures ◽

Turbine Blades ◽

Wind Turbine Blades ◽

Fibre Composites ◽

Glass Carbon ◽

Carbon Fibre Composites ◽

Laminar Shear

Glass and carbon fibre composites and hybrid glass/carbon composites are materials often used in wind turbine blades. In Africa wind turbines have to operate in warm climates. The present study presents the results of an experimental study on the mechanical properties of these composites at elevated temperatures. For this purpose, the composite specimens are fabricated by hand lay-up process to investigate their static and dynamic properties at high temperatures. The properties studied include Inter-laminar Shear Stress (ILSS), Dynamic Mechanical Properties (DMA) such as storage modulus, loss modulus and loss factor using ASTM standards. The inter-laminar shear failure strength of carbon fibre and hybrid glass-carbon fibre composites are found to be close whereas the glass transition and damping behavior of the hybrid composites are higher making them suitable for wind turbine blades operating at high temperatures. Short Beam Shear (SBS) test data are evaluated using chi-square goodness of fit statistical tests and the correlation coefficients from linear regression analysis are determined. Normal, lognormal and 2-parameter Weibull statistical distributions are used at 5% significant level.

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Experimental data on the mechanical properties of extruded composites from recycled wind turbine blade material

10.31224/osf.io/axknf ◽

2019 ◽

Author(s):

Seyed Hossein Mamanpush ◽

Azadeh Tavousi Tabatabaei

Keyword(s):

Experimental Data ◽

Mechanical Properties ◽

Wind Turbine ◽

High Density Polyethylene ◽

Turbine Blades ◽

Resin Content ◽

Coupling Agents ◽

Thermoplastic Resin ◽

Wind Turbine Blades ◽

Recycled Composites

The wind turbine blades (WTB) that face end-of-life was first mechanically milled and classified through a range of varying screen sizes. We then blended this with high density polyethylene (HDPE) thermoplastic resin and extruded it to a profiled composite. We determined the influence of refined particle size, resin content and coupling agents (maleic anhydride polyethylene (MAPE) and methacryloxypropyltriethoxysilane (Silane)) on the mechanical properties of recycled composites [1].

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