MG
Mathieu Gaborit
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1
Journal article
(2020)
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Tomasz Zieliński, Kamil Opiela, Rafał Wróbel, Seok Kim, Shahrzad Ghaffari Mosanenzadeh, Nicholas X. Fang, Jieun Yang, Baltazar Briere de La Hosseraye, Maarten Hornikx, Edouard Salze, Marie-Annick Galland, René Boonen, Piotr Pawłowski, Augusto Carvalho de Sousa, Elke Deckers, Mathieu Gaborit, Jean-Philippe Groby, Nicolas Dauchez, Thomas Boutin, John Kennedy, Daniel Trimble, Henry Rice, Bart Van Damme, Gwenael Hannema
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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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.