FR3108765B1 - Structure d’atténuation acoustique et son procédé de fabrication - Google Patents

Structure d’atténuation acoustique et son procédé de fabrication Download PDF

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Publication number
FR3108765B1
FR3108765B1 FR2003124A FR2003124A FR3108765B1 FR 3108765 B1 FR3108765 B1 FR 3108765B1 FR 2003124 A FR2003124 A FR 2003124A FR 2003124 A FR2003124 A FR 2003124A FR 3108765 B1 FR3108765 B1 FR 3108765B1
Authority
FR
France
Prior art keywords
acoustic
complex
attenuation structure
panel
partitions
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
FR2003124A
Other languages
English (en)
Other versions
FR3108765A1 (fr
Inventor
Hugues Laurent Alglave
Patrick Dunleavy
Nicolas Pierre Lanfant
Cédric Pierre Michel Thomas
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Safran SA
Original Assignee
Safran SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Safran SA filed Critical Safran SA
Priority to FR2003124A priority Critical patent/FR3108765B1/fr
Priority to EP21720815.6A priority patent/EP4128209A1/fr
Priority to PCT/FR2021/050555 priority patent/WO2021198610A1/fr
Priority to US17/915,852 priority patent/US20230131268A1/en
Priority to CN202180031317.XA priority patent/CN115485765A/zh
Publication of FR3108765A1 publication Critical patent/FR3108765A1/fr
Application granted granted Critical
Publication of FR3108765B1 publication Critical patent/FR3108765B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/46—Means for plasticising or homogenising the moulding material or forcing it into the mould
    • B29C45/56—Means for plasticising or homogenising the moulding material or forcing it into the mould using mould parts movable during or after injection, e.g. injection-compression moulding
    • B29C45/561—Injection-compression moulding
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/162—Selection of materials
    • G10K11/168—Plural layers of different materials, e.g. sandwiches
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/162—Selection of materials
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/172—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using resonance effects
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2007/00—Flat articles, e.g. films or sheets
    • B29L2007/002—Panels; Plates; Sheets

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)

Abstract

Structure d’atténuation acoustique et son procédé de fabrication Procédé de fabrication d’une structure d’atténuation acoustique comprenant un panneau multiéléments acoustiques complexes (220) s’étendant suivant une direction horizontal (DH) et une direction verticale (DV) et au moins une peau acoustique (210) recouvrant une des faces horizontales du panneau multiéléments acoustiques complexes, ledit panneau multiéléments acoustiques complexes (220) comprenant une pluralité d’éléments acoustiques complexes (221) ayant chacune une forme se rétrécissant progressivement entre une base (222) et un sommet (223) et une pluralité de cloisons (231) entourant chaque élément acoustique complexe de manière à former une pluralité de cellules acoustiques (250), lesdites cloisons s’étendant suivant la direction verticale (DV) à partir de la base (222) des éléments acoustiques complexes (221), au moins le panneau multiéléments acoustiques complexes (220) étant réalisé par injection d’un matériau thermoplastique ou thermodurcissable chargé ou non. Le panneau multiéléments acoustiques complexes (220) et la pluralité de cloisons (231) sont réalisés en une seule pièce par injection d’un matériau thermoplastique ou thermodurcissable chargé ou non. Figure pour l’abrégé : Fig. 3.
FR2003124A 2020-03-30 2020-03-30 Structure d’atténuation acoustique et son procédé de fabrication Active FR3108765B1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
FR2003124A FR3108765B1 (fr) 2020-03-30 2020-03-30 Structure d’atténuation acoustique et son procédé de fabrication
EP21720815.6A EP4128209A1 (fr) 2020-03-30 2021-03-30 Structure d'attenuation acoustique et son procede de fabrication
PCT/FR2021/050555 WO2021198610A1 (fr) 2020-03-30 2021-03-30 Structure d'attenuation acoustique et son procede de fabrication
US17/915,852 US20230131268A1 (en) 2020-03-30 2021-03-30 Acoustic attenuation structure and method for manufacturing same
CN202180031317.XA CN115485765A (zh) 2020-03-30 2021-03-30 声衰减结构及其制造方法

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR2003124A FR3108765B1 (fr) 2020-03-30 2020-03-30 Structure d’atténuation acoustique et son procédé de fabrication
FR2003124 2020-03-30

Publications (2)

Publication Number Publication Date
FR3108765A1 FR3108765A1 (fr) 2021-10-01
FR3108765B1 true FR3108765B1 (fr) 2023-12-22

Family

ID=71094519

Family Applications (1)

Application Number Title Priority Date Filing Date
FR2003124A Active FR3108765B1 (fr) 2020-03-30 2020-03-30 Structure d’atténuation acoustique et son procédé de fabrication

Country Status (5)

Country Link
US (1) US20230131268A1 (fr)
EP (1) EP4128209A1 (fr)
CN (1) CN115485765A (fr)
FR (1) FR3108765B1 (fr)
WO (1) WO2021198610A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3129022A1 (fr) * 2021-11-05 2023-05-12 Safran Structure d’atténuation acoustique d’une large gamme de fréquences
FR3129315B1 (fr) * 2021-11-19 2024-04-19 Safran Procédé de fabrication d’un composant multicellulaire
FR3137487A1 (fr) 2022-06-29 2024-01-05 Safran Assemblage de secteurs de composant acoustique
FR3142378A1 (fr) 2022-11-28 2024-05-31 Safran Procédé de fabrication d’un composant acoustique par estampage

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9613615D0 (en) 1996-06-28 1996-08-28 Short Brothers Plc Method of manufacturing a noise attenuation panel
US5912442A (en) 1997-07-02 1999-06-15 Trw Inc. Structure having low acoustically-induced vibration response
US20110033655A1 (en) * 2009-08-07 2011-02-10 Duchene Rainer K Energy saving honeycomb having enhanced strength
US9643392B2 (en) * 2013-07-29 2017-05-09 The Boeing Company Septumization of honeycomb sandwiches
US10851713B2 (en) * 2017-08-29 2020-12-01 Mra Systems, Llc. Acoustic liner having internal structure
FR3082987B1 (fr) 2018-06-25 2020-09-18 Airbus Operations Sas Structure constituant un isolant acoustique
FR3092844A1 (fr) * 2019-02-14 2020-08-21 Airbus Operations (S.A.S.) Procédé de réalisation d’une structure d’absorption acoustique comprenant une peau formant une pluralité d’enceintes, structure d’absorption acoustique obtenue selon ledit procédé et aéronef comprenant ladite structure d’absorption acoustique

Also Published As

Publication number Publication date
US20230131268A1 (en) 2023-04-27
FR3108765A1 (fr) 2021-10-01
EP4128209A1 (fr) 2023-02-08
CN115485765A (zh) 2022-12-16
WO2021198610A1 (fr) 2021-10-07

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