Sound and Vibration Damping Materials for Aeronautics Application

Kód výsledku v IS VaVaI

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Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Sound and Vibration Damping Materials for Aeronautics Application

Popis výsledku v původním jazyce

This paper deals with the problems of damping of aircraft vibrations, cabin noise as well as thermal insulation. A set of industrially used samples were tested, namely Isodamp C 3000, Fiberform, UGAPOL, Mitaver and Terril 34. Three basic physical characteristics were determined: frequency dependencies of sound absorption coefficient and dynamic modulus of elasticity, thermal conductivity coefficient. Several physical parameters and their frequency dependencies were calculated from measured dynamic modulus of elasticity, i.e. loss factor, insertion loss, and the complex components of the dynamic modulus of elasticity. It was found that material Fiberform is suitable mainly for sound absorption applications, ranging from 400 Hz up to 6000 Hz, where the sound absorption coefficient values were ranging between 0,6 to 0,95. In contrary, the Isodamp C 3000 is suitable mainly for vibration damping applications. This material had several basic resonances at the selected frequencies. The value

Název v anglickém jazyce

Sound and Vibration Damping Materials for Aeronautics Application

Popis výsledku anglicky

This paper deals with the problems of damping of aircraft vibrations, cabin noise as well as thermal insulation. A set of industrially used samples were tested, namely Isodamp C 3000, Fiberform, UGAPOL, Mitaver and Terril 34. Three basic physical characteristics were determined: frequency dependencies of sound absorption coefficient and dynamic modulus of elasticity, thermal conductivity coefficient. Several physical parameters and their frequency dependencies were calculated from measured dynamic modulus of elasticity, i.e. loss factor, insertion loss, and the complex components of the dynamic modulus of elasticity. It was found that material Fiberform is suitable mainly for sound absorption applications, ranging from 400 Hz up to 6000 Hz, where the sound absorption coefficient values were ranging between 0,6 to 0,95. In contrary, the Isodamp C 3000 is suitable mainly for vibration damping applications. This material had several basic resonances at the selected frequencies. The value

Druh

D - Stať ve sborníku

CEP obor

BI - Akustika a kmity

OECD FORD obor

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Projekt

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Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2012

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

Proceedings Euronoise Prague 2012

ISBN

978-80-01-05013-2

ISSN

2226-5147

e-ISSN

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Počet stran výsledku

3

Strana od-do

826-828

Název nakladatele

Česká akustická společnost

Místo vydání

Praha

Místo konání akce

Praha

Datum konání akce

10. 6. 2012

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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