Sound Absorption Performance of Sustainable 3D-Printed Micro-Perforated PLA Panels

DOI

10.2991/978-94-6239-813-9_8How to use a DOI?

Keywords

Sound absorption Coefficient; Micro-perforated panel; PLA; 3D printing; FDM; Impedance tube

Abstract

In the current study, the sound absorption performance of 3D-printed PLA micro-perforated panels fabricated via fused deposition modelling was evaluated. During evaluation, thickness was kept constant at 1 mm while pore diameter was varied as 0.4 mm, 0.6 mm, 0.8 mm, and 1 mm. For experimentation, the two-microphone impedance tube method was used in accordance with ASTM E1050, over a frequency range of 50 to 5000 Hz. Tests were conducted for variation of both perforation diameter and back air cavity (30–70 mm). The results show that the sample with 0.8 mm diameter and 50 mm air gap gives the best performance (average SAC of 0.865 across the 500–2000 Hz speech intelligibility range). These finding confirms 3D printed MPP made by PLA as a good option for tunable indoor noise control applications.

Copyright

© 2026 The Author(s)

Open Access

Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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TY  - CONF
AU  - Ganesh Kekan
AU  - Virendra Bhojwani
AU  - Sachin Pawar
PY  - 2026
DA  - 2026/10/29
TI  - Sound Absorption Performance of Sustainable 3D-Printed Micro-Perforated PLA Panels
BT  - Proceedings of the  Global Symposium on Adaptive Manufacturing (GSAM 2026)
PB  - Atlantis Press
SP  - 22
EP  - 24
SN  - 2352-5401
UR  - https://doi.org/10.2991/978-94-6239-813-9_8
DO  - 10.2991/978-94-6239-813-9_8
ID  - Kekan2026
ER  -