4.8 Article

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

期刊

ADDITIVE MANUFACTURING
卷 36, 期 -, 页码 -

出版社

ELSEVIER
DOI: 10.1016/j.addma.2020.101564

关键词

Porous materials; Designed periodicity; Additive manufacturing; Sound absorption

资金

  1. European Cooperation in Science and Technology (COST) through the COST Action [CA15125]
  2. National Science Centre (NCN), Poland [2015/19/B/ST8/03979]
  3. Early Stage Researchergrant within the European Project ACOUTECT Marie Curie Initial Training Network [GA 721536]
  4. Research Foundation - Flanders (FWO)

向作者/读者索取更多资源

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.

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