Sound absorption and transmission loss of 3D printed wood fibre reinforced poly lactic acid with functionally graded perforations
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Date
2024
Journal Title
Journal ISSN
Volume Title
Publisher
Taylor and Francis Ltd.
Abstract
The effect of wood fibre reinforcement on acoustic properties of 3D printed poly lactic acid samples having varying cross-section perforation and functionally graded spherical perforations is presented. Acoustic characteristics like sound absorption as well as transmission loss are obtained using an impedance tube setup. Results revealed the benefits due to the addition of wood fibres in PLA improved samples’ sound transmission loss characteristics significantly. The sound absorption curve peaks shifted to low-frequency regions which are favourable to living beings. The material can be used in acoustic insulation for structural and transportation applications, especially where eco-friendliness and aesthetics are of major concern. © 2023 Informa UK Limited, trading as Taylor & Francis Group.
Description
Keywords
3D printing, Acoustic wave absorption, Architectural acoustics, Lactic acid, Materials handling, Reinforcement, Sound insulating materials, Wave transmission, 3-D printing, 3D-printing, Absorption loss, FG perforation, PLA, SA coefficient, Sound absorption, Sound transmission, Tapered perforation, Woodfiber, Acoustic impedance, Characteristics, Lactic Acid, Materials Handling, Perforations, Sound Absorption, Transmission, Wood
Citation
Wood Material Science and Engineering, 2024, 19, 3, pp. 615-626