Reproducibility of sound-absorbing periodic porous materials using additive manufacturing technologies: Round robin study

Journal article (2020)

Authors

Tomasz Zieliński Polish Academy of Sciences
Kamil Opiela Polish Academy of Sciences
Rafał Wróbel Swiss Federal Laboratories for Materials Science and Technology (Empa)
Seok Kim Massachusetts Institute of Technology
Shahrzad Ghaffari Mosanenzadeh Massachusetts Institute of Technology
Nicholas X. Fang Massachusetts Institute of Technology
Jieun Yang Eindhoven University of Technology
Baltazar Briere de La Hosseraye Eindhoven University of Technology
Maarten Hornikx Eindhoven University of Technology
Edouard Salze École Centrale de Lyon
Marie-Annick Galland École Centrale de Lyon
René Boonen Katholieke Universiteit Leuven
Piotr Pawłowski Polish Academy of Sciences
Augusto Carvalho de Sousa Flanders Make, Katholieke Universiteit Leuven
Elke Deckers Flanders Make, Katholieke Universiteit Leuven
Mathieu Gaborit KTH Royal Institute of Technology
Jean-Philippe Groby Le Mans Université, Le Mans
Nicolas Dauchez Universite de Technologie de Compiegne
Thomas Boutin Universite de Technologie de Compiegne
John Kennedy Trinity College Dublin
Daniel Trimble Trinity College Dublin
Henry Rice Trinity College Dublin
Bart Van Damme Swiss Federal Laboratories for Materials Science and Technology (Empa)
Gwenael Hannema Swiss Federal Laboratories for Materials Science and Technology (Empa)
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Published Date

2020

Language

English

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Abstract

The purpose of this work is to check if additive manufacturing technologies are suitable for reproducing porous samples designed for sound absorption. The work is an inter-laboratory test, in which the production of samples and their acoustic measurements are carried out independently by different laboratories, sharing only the same geometry codes describing agreed periodic cellular designs. Different additive manufacturing technologies and equipment are used to make samples. Although most of the results obtained from measurements performed on samples with the same cellular design are very close, it is shown that some discrepancies are due to shape and surface imperfections, or microporosity, induced by the manufacturing process. The proposed periodic cellular designs can be easily reproduced and are suitable for further benchmarking of additive manufacturing techniques for rapid prototyping of acoustic materials and metamaterials.