Experimental investigation on pore size effect on the linear viscoelastic properties of acoustic foams | Zendy

Mickaël Deverge | Zendy; Lazhar Benyahia | Zendy; Sohbi Sahraoui | Zendy

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Experimental investigation on pore size effect on the linear viscoelastic properties of acoustic foams

Author(s) -

Mickaël Deverge,

Lazhar Benyahia,

Sohbi Sahraoui

Publication year - 2009

Publication title -

the journal of the acoustical society of america

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.619

H-Index - 187

eISSN - 1520-8524

pISSN - 0001-4966

DOI - 10.1121/1.3186799

Subject(s) - viscoelasticity , materials science , superposition principle , composite material , shear (geology) , range (aeronautics) , moduli , polymer , shear modulus , time–temperature superposition , mathematics , physics , mathematical analysis , quantum mechanics

This paper presents linear viscoelastic measurement on a large frequency range (10(-2)-10(8) Hz) for cross-linked polymer open-cell foams of same density and different pore sizes. This large extension of frequency range is obtained by the validation of a frequency-temperature superposition principle, commonly used with polymers. At higher frequencies, the shear moduli are independent of the pore size. In acoustical insulation range (1 Hz-16 kHz), the shear moduli decreases with the foams' pore size.

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