Additive Manufacturing of Silencers with Microperforates

Jukka Tanttari, Erin Komi, Antti Hynninen (Corresponding Author), Heikki Isomoisio, Seppo Uosukainen, Virpi Hankaniemi, Mikko Matalamäki

Research output: Contribution to journalArticleScientificpeer-review

Abstract

A microperforated panel (MPP) is generally defined as a perforated plate, in which the impedance of below one millimetre perforations is dominated by viscous losses. Using MPPs in duct and silencer applications, target is to maximize transmission loss (TL) by choosing proper surface impedance parameters. Additive manufacturing (AM) has recently reduced conventional design limitations and enabled fast prototyping of complex shaped structures. MPP-based model scale silencers can be printed within reasonable time, price, and accuracy. In this paper, design and validation of AM silencers with MPPs are studied. First, the theoretical background of MPP acoustics is summarized. Second, feasible parameters for a MPP absorber for a certain tuning frequency are sought numerically using acoustic finite element method (FEM). Third, several test MPPs are prototyped and their acoustic properties are measured. Finally, MPP silencers are simulated using different approaches and the results are compared against experiments.
Original languageEnglish
Article number7649756
Number of pages13
JournalAdvances in Acoustics and Vibration
Volume2018
DOIs
Publication statusPublished - 14 Oct 2018
MoE publication typeNot Eligible

Fingerprint

3D printers
silencers
massively parallel processors
manufacturing
Acoustics
Perforated plates
Acoustic properties
Ducts
Tuning
Finite element method
impedance
perforated plates
perforation
acoustics
acoustic properties
transmission loss
scale models
ducts
Experiments
absorbers

Keywords

  • micro-perforated
  • MPP
  • silencer
  • additive manufacturing
  • AM

Cite this

Tanttari, Jukka ; Komi, Erin ; Hynninen, Antti ; Isomoisio, Heikki ; Uosukainen, Seppo ; Hankaniemi, Virpi ; Matalamäki, Mikko. / Additive Manufacturing of Silencers with Microperforates. In: Advances in Acoustics and Vibration. 2018 ; Vol. 2018.
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Additive Manufacturing of Silencers with Microperforates. / Tanttari, Jukka; Komi, Erin; Hynninen, Antti (Corresponding Author); Isomoisio, Heikki; Uosukainen, Seppo; Hankaniemi, Virpi; Matalamäki, Mikko.

In: Advances in Acoustics and Vibration, Vol. 2018, 7649756, 14.10.2018.

Research output: Contribution to journalArticleScientificpeer-review

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