PL443120A1 - Acoustic metamaterial - Google Patents

Acoustic metamaterial

Info

Publication number
PL443120A1
PL443120A1 PL443120A PL44312022A PL443120A1 PL 443120 A1 PL443120 A1 PL 443120A1 PL 443120 A PL443120 A PL 443120A PL 44312022 A PL44312022 A PL 44312022A PL 443120 A1 PL443120 A1 PL 443120A1
Authority
PL
Poland
Prior art keywords
acoustic metamaterial
filling
density
layers
structural
Prior art date
Application number
PL443120A
Other languages
Polish (pl)
Other versions
PL245955B1 (en
Inventor
Grzegorz Szczepański
Original Assignee
Centralny Instytut Ochrony Pracy - Państwowy Instytut Badawczy
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 Centralny Instytut Ochrony Pracy - Państwowy Instytut Badawczy filed Critical Centralny Instytut Ochrony Pracy - Państwowy Instytut Badawczy
Priority to PL443120A priority Critical patent/PL245955B1/en
Publication of PL443120A1 publication Critical patent/PL443120A1/en
Publication of PL245955B1 publication Critical patent/PL245955B1/en

Links

Classifications

    • 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
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
    • E04B1/84—Sound-absorbing elements

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Multimedia (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Laminated Bodies (AREA)
  • Building Environments (AREA)

Abstract

Metamateriał akustyczny o właściwościach dźwiękochłonnych, zawierający wiele strukturalnych warstw rozmieszczonych równolegle względem siebie, charakteryzuje się tym, że zawiera co najmniej 10 warstw (1-10) ze strukturalnym wypełnieniem, z których każda ma grubość h1 nie większą niż 5 mm, przy czym gęstość struktury wypełnienia każdej kolejnej warstwy (1-10) jest większa od gęstości poprzedzającej ją warstwy o nie więcej niż 2 punkty procentowe.Acoustic metamaterial with sound-absorbing properties, containing many structural layers arranged parallel to each other, is characterized by the fact that it contains at least 10 layers (1-10) with structural filling, each of which has a thickness h1 of not more than 5 mm, and the structure density filling of each subsequent layer (1-10) is greater than the density of the preceding layer by no more than 2 percentage points.

PL443120A 2022-12-12 2022-12-12 Acoustic metamaterial PL245955B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL443120A PL245955B1 (en) 2022-12-12 2022-12-12 Acoustic metamaterial

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PL443120A PL245955B1 (en) 2022-12-12 2022-12-12 Acoustic metamaterial

Publications (2)

Publication Number Publication Date
PL443120A1 true PL443120A1 (en) 2024-02-12
PL245955B1 PL245955B1 (en) 2024-11-04

Family

ID=89855753

Family Applications (1)

Application Number Title Priority Date Filing Date
PL443120A PL245955B1 (en) 2022-12-12 2022-12-12 Acoustic metamaterial

Country Status (1)

Country Link
PL (1) PL245955B1 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
PL178638B1 (en) * 1995-08-04 2000-05-31 Orwinski Stefan Sound absorbing screen
PL180618B1 (en) * 1994-09-14 2001-03-30 Faist Automotive Gmbh & Co Kg Multiple-layer sound wave absorber
EP2973538B1 (en) * 2013-03-13 2019-05-22 BAE SYSTEMS plc A metamaterial
WO2022228269A1 (en) * 2021-04-28 2022-11-03 国防科技大学 Thin-layer low-frequency underwater sound insulation metamaterial

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
PL180618B1 (en) * 1994-09-14 2001-03-30 Faist Automotive Gmbh & Co Kg Multiple-layer sound wave absorber
PL178638B1 (en) * 1995-08-04 2000-05-31 Orwinski Stefan Sound absorbing screen
EP2973538B1 (en) * 2013-03-13 2019-05-22 BAE SYSTEMS plc A metamaterial
WO2022228269A1 (en) * 2021-04-28 2022-11-03 国防科技大学 Thin-layer low-frequency underwater sound insulation metamaterial

Also Published As

Publication number Publication date
PL245955B1 (en) 2024-11-04

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