ABSTRACT

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 µm average particle size (APS) and 12 µm APS), copper (12 µm APS), silver (14 µm APS) as conductive metal pigments and graphite (18 µm 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 R² 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.

摘要

本研究旨在研究金属基和石墨基涂层的声传输损耗 (STL) 特性与表面形貌之间的关系。铝（22 µm 平均粒径 (APS) 和 12 µm APS）、铜 (12 µm APS)、银 (14 µm APS) 作为导电金属颜料和石墨 (18 µm APS) 作为半导体颜料用于制造使用内部设计的声波调制装置测量涂层和 STL 性能。实验中使用了不同载流子波长的激光束，其中R ^{2最高的波长为}和重要变量的数量被用来创建一个数学模型，以帮助测量声音传输损耗特性。发现表面张力能、电导率、渗透性、反射率、浓度和颜料类型在确定 STL 性能方面具有重要意义。