https://doi.org/10.1140/epjp/s13360-024-05545-w
Regular Article
Investigating color dynamics in composite lumbers: a diffractive approach to surface topography
1
Tsung-Dao Lee Institute, Shanghai Jiao Tong University, 201210, Shanghai, People’s Republic of China
2
Department of High School, Shanghai Starriver Bilingual School, 201108, Shanghai, People’s Republic of China
3
Department of Physics, Hechi University, 546300, Hechi, People’s Republic of China
4
Department of Physics, Northeast Forestry University, 150040, Harbin, People’s Republic of China
Received:
13
February
2024
Accepted:
7
August
2024
Published online:
3
October
2024
This study delves into the optical quality of composite lumber, a prevalent building material, focusing on surface color changes due to varying roughness. Using a diffractive model, this study analyzes the influence of surface topography on PVC and PU-coated composite lumbers. Experimental setups involved manually polishing samples with different mesh size (graininess) sandpapers, followed by capturing reflectance spectra using the WGS-9 Chromaticity Experimental Apparatus. The one-dimensional ideal diffraction grating-based model proposes that the polished surface behaves as an ideal grating “film” superimposed on the raw surface, correlating grating constant with sandpaper roughness. The results reveal a linear trend in color changes with sandpaper grits. This model effectively explores the trend of color alterations, particularly with smoother sandpapers. This study offers insights for developing models bridging irregular surface structures and optical properties, which is crucial for advancing composite material engineering and design.
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© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2024. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
