Sound and Vibration Damping Materials for Aeronautics Application

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F70883521%3A28110%2F12%3A43867968" target="_blank" >RIV/70883521:28110/12:43867968 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Sound and Vibration Damping Materials for Aeronautics Application
Original language description
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
Czech name
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Czech description
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Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2012
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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