Instytut Podstawowych Problemów Techniki
Polskiej Akademii Nauk

Partnerzy

Thomas Boutin

Sorbonne University Alliance (FR)

Ostatnie publikacje
1.  Zielinski T.G., Dauchez N., Boutin T., Leturia M., Wilkinson A., Chevillotte F., Bécot F.-X., Venegas R., Taking advantage of a 3D printing imperfection in the development of sound-absorbing materials, APPLIED ACOUSTICS, ISSN: 0003-682X, DOI: 10.1016/j.apacoust.2022.108941, Vol.197, pp.108941-1-22, 2022

Streszczenie:
At first glance, it seems that modern, inexpensive additive manufacturing (AM) technologies can be used to produce innovative, efficient acoustic materials with tailored pore morphology. However, on closer inspection, it becomes rather obvious that for now this is only possible for specific solutions, such as relatively thin, but narrow-band sound absorbers. This is mainly due to the relatively poor resolutions available in low-cost AM technologies and devices, which prevents the 3D-printing of pore networks with characteristic dimensions comparable to those found in conventional broadband sound-absorbing materials. Other drawbacks relate to a number of imperfections associated with AM technologies, including porosity or rather microporosity inherent in some of them. This paper shows how the limitations mentioned above can be alleviated by 3D-printing double-porosity structures, where the main pore network can be designed and optimised, while the properties of the intentionally microporous skeleton provide the desired permeability contrast, leading to additional broadband sound energy dissipation due to pressure diffusion. The beneficial effect of additively manufactured double porosity and the phenomena associated with it are rigorously demonstrated and validated in this work, both experimentally and through precise multi-scale modelling, on a comprehensive example that can serve as benchmark.

Słowa kluczowe:
double porosity, additive manufacturing, sound absorption, pressure diffusion, multi-scale modelling

Afiliacje autorów:
Zielinski T.G. - IPPT PAN
Dauchez N. - Sorbonne University Alliance (FR)
Boutin T. - Sorbonne University Alliance (FR)
Leturia M. - Sorbonne University Alliance (FR)
Wilkinson A. - Sorbonne University Alliance (FR)
Chevillotte F. - MATELYS – Research Lab (FR)
Bécot F.-X. - MATELYS – Research Lab (FR)
Venegas R. - MATELYS – Research Lab (FR)
100p.
2.  Zieliński T.G., Opiela K.C., Pawłowski P., Dauchez N., Boutin T., Kennedy J., Trimble D., Rice H., Van Damme B., Hannema G., Wróbel R., Kim S., Ghaffari Mosanenzadeh S., Fang N.X., Yang J., Briere de La Hosseraye B., Hornikx M.C.J., Salze E., Galland M.-A., Boonen R., Carvalho de Sousa A., Deckers E., Gaborit M., Groby J.-P., Reproducibility of sound-absorbing periodic porous materials using additive manufacturing technologies: round robin study, Additive Manufacturing, ISSN: 2214-8604, DOI: 10.1016/j.addma.2020.101564, Vol.36, pp.101564-1-24, 2020

Streszczenie:
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.

Słowa kluczowe:
porous materials, designed periodicity, additive manufacturing, sound absorption

Afiliacje autorów:
Zieliński T.G. - IPPT PAN
Opiela K.C. - IPPT PAN
Pawłowski P. - IPPT PAN
Dauchez N. - Sorbonne University Alliance (FR)
Boutin T. - Sorbonne University Alliance (FR)
Kennedy J. - Trinity College (IE)
Trimble D. - Trinity College (IE)
Rice H. - Trinity College (IE)
Van Damme B. - inna afiliacja
Hannema G. - inna afiliacja
Wróbel R. - inna afiliacja
Kim S. - inna afiliacja
Ghaffari Mosanenzadeh S. - inna afiliacja
Fang N.X. - inna afiliacja
Yang J. - Clemson University (US)
Briere de La Hosseraye B. - inna afiliacja
Hornikx M.C.J. - inna afiliacja
Salze E. - inna afiliacja
Galland M.-A. - École Centrale de Lyon (FR)
Boonen R. - inna afiliacja
Carvalho de Sousa A. - inna afiliacja
Deckers E. - Katholieke Universiteit Leuven (BE)
Gaborit M. - inna afiliacja
Groby J.-P. - inna afiliacja
200p.

Prace konferencyjne
1.  Zieliński T.G., Opiela K.C., Pawłowski P., Dauchez N., Boutin T., Kennedy J., Trimble D., Rice H., Differences in sound absorption of samples with periodic porosity produced using various Additive Manufacturing Technologies, ICA 2019, 23rd International Congress on Acoustics integrating 4th EAA Euroregio 2019, 2019-09-09/09-13, Aachen (DE), DOI: 10.18154/RWTH-CONV-239456, pp.4505-4512, 2019

Streszczenie:
With a rapid development of modern Additive Manufacturing Technologies it seems inevitable that they will sooner or later serve for production of specific porous and meta-porous acoustic treatments. Moreover, these new technologies are already being used to manufacture original micro-geometric designs of sound absorbing media in order to test microstructure-based effects, models and hypothesis. In the view of these statements, this work reports differences in acoustic absorption measured for porous specimens which were produced from the same CAD-geometry model using several additive manufacturing technologies and 3D-printers. A specific periodic unit cell of open porosity was designed for the purpose. The samples were measured acoustically in the impedance tube and also subjected to a thorough microscopic survey in order to check their quality and look for the discrepancy reasons.

Słowa kluczowe:
Sound absorption, Additive Manufacturing Technologies

Afiliacje autorów:
Zieliński T.G. - IPPT PAN
Opiela K.C. - IPPT PAN
Pawłowski P. - IPPT PAN
Dauchez N. - Sorbonne University Alliance (FR)
Boutin T. - Sorbonne University Alliance (FR)
Kennedy J. - Trinity College (IE)
Trimble D. - Trinity College (IE)
Rice H. - Trinity College (IE)

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