Sound Absorption Performance of 3D-Printed PLA/Wood Composites
摘要
This article delves into the acoustic properties of Wood-filled PLA composite, specifically filament made using an extrusion process and specimen prepared with 3D printing techniques. To assess the sound absorption capabilities of this novel material, the study utilized the impedance tube method. The results of the tests indicated that the newly developed material exhibited subpar sound absorption characteristics at low and high frequency range when compared with medium frequency range. This deficiency can be attributed to the material's dense and closely packed structure. It is worth highlighting that the infill percentage and surface roughness emerged as the primary determinant influencing the acoustic properties.