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Authors: Ivan Nikolov and Claus Madsen

Affiliation: Department of Architecture, Design and Media Technology, Aalborg University, Rendsburggade 14, Aalborg, Denmark

Keyword(s): 3D Reconstruction, Surface Inspection, Sandpaper Roughness, Classification, Random Forests, Geometrical Properties.

Abstract: Surface inspection of wind turbine blades is a necessary step, to ensure longevity and sustained high energy output. The detection of accumulation of damages and increased surface roughness of in-use blades, is one of the main objectives of inspections in the wind energy industry. Creating 3D scans of the leading edges of blade surfaces has been more and more used for capturing the roughness profile of blades. An important part in analysing these surface 3D scans is the standardization of the captured data across different blade surfaces, types and sizes. In this paper we propose an initial exploration of using sandpaper grit sizes to provide this standardization. Sandpaper has been widely used for approximating different levels of blade surface roughness and its standardized nature can be used to easily describe and compare blade surfaces. We reconstruct a number of different sandpaper grit sizes - from coarser P40 to a finer P180. We extract a number of 3D surface features from the m and use them to train a random forest classification method. This method is then used to segment the surfaces of wind turbine blades in areas of different surface roughness. We test our proposed solution on a variety of blade surfaces - from smooth to course and damaged and show that it manages to classify them depending on their roughness. (More)

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Paper citation in several formats:
Nikolov, I. and Madsen, C. (2021). Quantifying Wind Turbine Blade Surface Roughness using Sandpaper Grit Sizes: An Initial Exploration. In Proceedings of the 16th International Joint Conference on Computer Vision, Imaging and Computer Graphics Theory and Applications (VISIGRAPP 2021) - Volume 5: VISAPP; ISBN 978-989-758-488-6; ISSN 2184-4321, SciTePress, pages 801-808. DOI: 10.5220/0010283908010808

@conference{visapp21,
author={Ivan Nikolov. and Claus Madsen.},
title={Quantifying Wind Turbine Blade Surface Roughness using Sandpaper Grit Sizes: An Initial Exploration},
booktitle={Proceedings of the 16th International Joint Conference on Computer Vision, Imaging and Computer Graphics Theory and Applications (VISIGRAPP 2021) - Volume 5: VISAPP},
year={2021},
pages={801-808},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0010283908010808},
isbn={978-989-758-488-6},
issn={2184-4321},
}

TY - CONF

JO - Proceedings of the 16th International Joint Conference on Computer Vision, Imaging and Computer Graphics Theory and Applications (VISIGRAPP 2021) - Volume 5: VISAPP
TI - Quantifying Wind Turbine Blade Surface Roughness using Sandpaper Grit Sizes: An Initial Exploration
SN - 978-989-758-488-6
IS - 2184-4321
AU - Nikolov, I.
AU - Madsen, C.
PY - 2021
SP - 801
EP - 808
DO - 10.5220/0010283908010808
PB - SciTePress

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