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- W2951570352 abstract "Abstract Wind turbine blade damage, particularly leading edge erosion, is a significant problem faced by the renewable energy industry. Wind turbines are subject to a wide range of environmental factors during a 20 + year lifespan, with hailstones often touted as a key contributor to the deterioration of the blade profile. An experimental campaign was carried out to investigate the effects of repeated impact of smaller diameter simulated hail ice (SHI) on composite materials, to correspond to those most prevalent at wind farm locations. Hailstones of four different diameters (5 mm, 10 mm, 15 mm and 20 mm) were fired at velocities in the range of 50 m s − 1 to 95 m s − 1 . Samples used for experimentation were manufactured from triaxial stitched glass fibre [0°/ − 45°/+45°] and epoxy resin. Damage was evaluated in terms of sample mass loss and microscopy of the composite surface. For all examples, mass loss was negligible and optical microscopy showed little evidence of surface damage. Surface degradation was discernible under scanning electron microscopy for the larger diameter SHI ( ≥ 15 mm ), with projectile velocity a notable factor in the extent of the damage. Even for large numbers of impacts, there was little noteworthy damage caused by smaller, more prevalent SHI ( ≤ 10 mm ). This suggests that hail is not a direct cause of wind turbine blade erosion." @default.
- W2951570352 created "2019-06-27" @default.
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- W2951570352 date "2019-08-01" @default.
- W2951570352 modified "2023-09-24" @default.
- W2951570352 title "Repeated impact of simulated hail ice on glass fibre composite materials" @default.
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- W2951570352 doi "https://doi.org/10.1016/j.wear.2019.06.001" @default.
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