Chojnacki Bartlomiej, Schynol Kamil, Halek Mateusz, Muniak Alicja
Department of Mechanics and Vibroacoustics, AGH University of Science and Technology, Mickiewicza Av. 30, 30-059 Cracow, Poland.
Form At Wood sp. z o.o., Technologiczna 2, 45-839 Opole, Poland.
Materials (Basel). 2023 Sep 6;16(18):6089. doi: 10.3390/ma16186089.
The current interior design scope places high demands on acoustic treatment manufacturers. The state of the art does not provide satisfactory material proposals for architects to satisfy design needs. There is a need for a novel approach concerning decorative, recognized materials that adapts them to the acoustic surface properties. The final design proposed in this study presents a modern functional solution with high acoustic properties, which can be produced with sustainable materials such as FSC wood and has a low environmental impact because of its low waste production. This research presents the complete design process of a novel type of wooden acoustic panel. A comprehensive explanation of the scientific development is covered, including basic material testing in an impedance tube, FEM simulations of the initial designs, and final measurements in a reverberation chamber. The solution's novelty is based on the optimized placement of the perforation holes on the surface of a wooden overlay using a ship deck optimization algorithm. The methods used cover the original solution of mixing FEM modeling of the surface impedance with the application of the Jeong-Thomasson correction for random incidence sound absorption coefficient simulation. The contribution of this research is the development of wooden perforated panels with Class A sound absorption and an overall depth of 90 mm, including the 50 mm depth of the backing material. The discussion will explain the difficulties of working with this material and the need for a combination of the aesthetic and acoustic sides of the project.
当前的室内设计范围对声学处理制造商提出了很高的要求。现有技术水平无法为建筑师提供令人满意的材料方案来满足设计需求。需要一种新颖的方法来处理装饰性、公认的材料，使其适应声学表面特性。本研究中提出的最终设计呈现了一种具有高声学性能的现代功能性解决方案，它可以用诸如FSC认证木材等可持续材料生产，并且由于其低废料产生而对环境影响较小。本研究展示了一种新型木质吸音板的完整设计过程。涵盖了对科学发展的全面解释，包括在阻抗管中的基本材料测试、初始设计的有限元模拟以及在混响室中的最终测量。该解决方案的新颖之处在于使用船甲板优化算法在木质覆盖层表面优化穿孔孔的布置。所采用的方法包括将表面阻抗的有限元建模与应用Jeong-Thomasson校正以模拟随机入射吸声系数的原始解决方案。本研究的贡献在于开发出具有A级吸声性能且总深度为90毫米（包括50毫米厚的背衬材料深度）的木质穿孔板。讨论将解释使用这种材料的困难以及项目在美学和声学方面相结合的必要性。
