Yazar "Yalcin, G. E." seçeneğine göre listele

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    Mathematical modelling of sound transmission loss (STL) in metallic and graphite based coatings
    (Taylor & Francis Ltd, 2022) Yalcin, G. E.; Ergin Esen, Hande; Yağımlı, Mustafa; Arca, Emin
    This study aimed to investigate the relationship between the sound transmission loss (STL) properties and surface morphologies of metallic-based and graphite-based coatings. Aluminium (22 mu m average particle size (APS) and 12 mu m APS), copper (12 mu m APS), silver (14 mu m APS) as conductive metal pigments and graphite (18 mu m APS) as a semi-conductive pigment were used to create coatings and STL properties were measured with an in-house designed sound wave modulation device. Laser beams with different carrier wavelengths were used in the experiment, for which the wavelength with the highest R-2 and number of significant variables was used to create a mathematical model to help in measuring the sound transmission loss properties. Surface tension energy, conductivity, permeability, reflectivity, concentration and the type of pigment were found to be significant in determining the STL properties.
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    Öğe
    Mathematical modelling of sound transmission loss performances of different coloured surfaces coated with polyurethane-based paint
    (Taylor & Francis Ltd, 2020) Ergin Esen, H.; Yagimli, M.; Tozan, H.; Yalcin, G. E.; Arca, E.
    The aim of this study is to investigate the effect of morphologies and the structure of polyurethane-based coatings created by different colour pigments, on sound transmission loss properties. To achieve this goal, coatings were created in different concentrations of 5%, 7% and 9% with red, green, orange and yellow pigments. The coatings were applied on glass surfaces and the sound transmission loss was measured by an experimental arrangement containing a microphone and a decibel meter. The effect of surface tension energy, surface roughness, reflection percentages and concentration of pigments were found to be negligible on the sound transmission loss, whereas the LAB colour codes have a determining effect. In the scope of this study, a new method and mathematical model were created to help measure the sound transmission loss on a surface, in which sound signal was carried with a laser beamviaa system created in the laboratory.