Title:
ACOUSTIC METAMATERIAL AND METHOD FOR THE ADDITIVE MANUFACTURING THEREOF
Document Type and Number:
WIPO Patent Application WO/2022/234228
Kind Code:
A3
Abstract:
The invention relates to an acoustic metamaterial (100, 100'), as well as to a method for manufacturing same. The acoustic metamaterial comprises a plurality of channels (101) or columns (101') each having the same cross-section with a hydraulic radius between 5 and 300 µm, which channels or columns are arranged with a periodic spacing (t,s) between 2 and 600 µm. This results in a highly dense network that can provide optimal acoustic absorption and/or impedance over a wide frequency range. The method for manufacturing same comprises additive manufacturing with a plurality of consecutive material deposition steps to form, in each step, a layer (203) comprising a plurality of periodically repeated cells (204) separated by walls (104). The layers (203) deposited in the consecutive material deposition steps are stacked with their respective cells (204) aligned to form channels (101, 206').
Inventors:
COSTA BAPTISTA JOSUÉ (CA)
FOTSING EDITH-ROLAND (CA)
ROSS ANNIE (CA)
MARDJONO JACKY (FR)
BOULVERT JEAN (FR)
THERRIAULT DANIEL (CA)
FOTSING EDITH-ROLAND (CA)
ROSS ANNIE (CA)
MARDJONO JACKY (FR)
BOULVERT JEAN (FR)
THERRIAULT DANIEL (CA)
Application Number:
PCT/FR2022/050849
Publication Date:
January 19, 2023
Filing Date:
May 03, 2022
Export Citation:
Assignee:
SAFRAN AIRCRAFT ENGINES (FR)
CENTRE NAT RECH SCIENT (FR)
UNIV DU MANS (FR)
CENTRE NAT RECH SCIENT (FR)
UNIV DU MANS (FR)
International Classes:
G10K11/162; B33Y10/00; B33Y80/00; B29C64/00; F02C7/045; F02K1/82
Foreign References:
| US20150279345A1 | 2015-10-01 | |||
| JP2019031898A | 2019-02-28 |
Other References:
STEFANO LAURETI ET AL: "Trapped air metamaterials for ultrasonic sub-wavelength imaging in water", ARXIV.ORG, CORNELL UNIVERSITY LIBRARY, 201 OLIN LIBRARY CORNELL UNIVERSITY ITHACA, NY 14853, 6 February 2020 (2020-02-06), XP081593743
BOULVERT JEAN ET AL: "Acoustic modeling of micro-lattices obtained by additive manufacturing", APPLIED ACOUSTICS, ELSEVIER PUBLISHING, GB, vol. 164, 14 February 2020 (2020-02-14), XP086121434, ISSN: 0003-682X, [retrieved on 20200214], DOI: 10.1016/J.APACOUST.2020.107244
BOULVERT JEAN ET AL: "Folded metaporous material for sub-wavelength and broadband perfect sound absorption", APPLIED PHYSICS LETTERS, AMERICAN INSTITUTE OF PHYSICS, 2 HUNTINGTON QUADRANGLE, MELVILLE, NY 11747, vol. 117, no. 25, 24 December 2020 (2020-12-24), XP012252543, ISSN: 0003-6951, [retrieved on 20201224], DOI: 10.1063/5.0032809
AKIWATE DEEPAK C. ET AL: "Acoustic properties of additive manufactured narrow tube periodic structures", APPLIED ACOUSTICS., vol. 136, July 2018 (2018-07-01), GB, pages 123 - 131, XP055951147, ISSN: 0003-682X, DOI: 10.1016/j.apacoust.2018.02.022
CAI XIAOBING ET AL: "Sound absorption by acoustic microlattice with optimized pore configuration", THE JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA, AMERICAN INSTITUTE OF PHYSICS, 2 HUNTINGTON QUADRANGLE, MELVILLE, NY 11747, vol. 144, no. 2, 23 August 2018 (2018-08-23), pages EL138 - EL143, XP012231042, ISSN: 0001-4966, [retrieved on 20180823], DOI: 10.1121/1.5051526
KOIVIKKO ANASTASIA ET AL: "Fabrication of Soft Devices with Buried Fluid Channels by Using Sacrificial 3D Printed Molds", 2019 2ND IEEE INTERNATIONAL CONFERENCE ON SOFT ROBOTICS (ROBOSOFT), IEEE, 14 April 2019 (2019-04-14), pages 509 - 513, XP033555689, DOI: 10.1109/ROBOSOFT.2019.8722741
FANGHANG DENG ET AL: "Multifunctional Liquid Metal Lattice Materials with Recoverable and Reconfigurable Behaviors", ARXIV.ORG, CORNELL UNIVERSITY LIBRARY, 201 OLIN LIBRARY CORNELL UNIVERSITY ITHACA, NY 14853, 8 December 2019 (2019-12-08), XP081547525
BOULVERT JEAN ET AL: "Acoustic modeling of micro-lattices obtained by additive manufacturing", APPLIED ACOUSTICS, ELSEVIER PUBLISHING, GB, vol. 164, 14 February 2020 (2020-02-14), XP086121434, ISSN: 0003-682X, [retrieved on 20200214], DOI: 10.1016/J.APACOUST.2020.107244
BOULVERT JEAN ET AL: "Folded metaporous material for sub-wavelength and broadband perfect sound absorption", APPLIED PHYSICS LETTERS, AMERICAN INSTITUTE OF PHYSICS, 2 HUNTINGTON QUADRANGLE, MELVILLE, NY 11747, vol. 117, no. 25, 24 December 2020 (2020-12-24), XP012252543, ISSN: 0003-6951, [retrieved on 20201224], DOI: 10.1063/5.0032809
AKIWATE DEEPAK C. ET AL: "Acoustic properties of additive manufactured narrow tube periodic structures", APPLIED ACOUSTICS., vol. 136, July 2018 (2018-07-01), GB, pages 123 - 131, XP055951147, ISSN: 0003-682X, DOI: 10.1016/j.apacoust.2018.02.022
CAI XIAOBING ET AL: "Sound absorption by acoustic microlattice with optimized pore configuration", THE JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA, AMERICAN INSTITUTE OF PHYSICS, 2 HUNTINGTON QUADRANGLE, MELVILLE, NY 11747, vol. 144, no. 2, 23 August 2018 (2018-08-23), pages EL138 - EL143, XP012231042, ISSN: 0001-4966, [retrieved on 20180823], DOI: 10.1121/1.5051526
KOIVIKKO ANASTASIA ET AL: "Fabrication of Soft Devices with Buried Fluid Channels by Using Sacrificial 3D Printed Molds", 2019 2ND IEEE INTERNATIONAL CONFERENCE ON SOFT ROBOTICS (ROBOSOFT), IEEE, 14 April 2019 (2019-04-14), pages 509 - 513, XP033555689, DOI: 10.1109/ROBOSOFT.2019.8722741
FANGHANG DENG ET AL: "Multifunctional Liquid Metal Lattice Materials with Recoverable and Reconfigurable Behaviors", ARXIV.ORG, CORNELL UNIVERSITY LIBRARY, 201 OLIN LIBRARY CORNELL UNIVERSITY ITHACA, NY 14853, 8 December 2019 (2019-12-08), XP081547525
Attorney, Agent or Firm:
CALVO DE NO, Rodrigo et al. (FR)
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