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Titre du document / Document title

Carbon Nanotube Reinforced Acoustically Transparent Epoxy Nanocomposites for Underwater Sonar Windows

Auteur(s) / Author(s)

WEI CHEN (1) ; RAJARAM Shankar (2) ; THOMAS Shad (1) ; NUTT Steven R. (1) ;

Affiliation(s) du ou des auteurs / Author(s) Affiliation(s)

(1) Materials Science and Chemical Engineering, University of Southern California, Los Angeles, CA, ETATS-UNIS
(2) ATS Consulting, Los Angeles, CA, ETATS-UNIS

Résumé / Abstract

Oxidized multiwalled carbon nanotubes (o-MWCNTs) were incorporated into filled epoxy blends to develop acoustically transparent structural nanocomposites for sonar windows. The longitudinal wave speed, density, flexural mechanical properties, loss factor, and insertion loss were characterized for different compositions. The addition of 0.05wt% o-MINCNTs increased the composite flexural modulus and strength by 370% and 90% respectively with no change in the longitudinal acoustic wave speed. Analytical predictions also indicated that the higher shear loss factor provided by carbon nanotubes ameliorated shear resonance at oblique insertion angles. Carbon nanotube additions afford the ability to increase mechanical properties and acoustic transparency, both of which are critical for underwater sonar windows.

Revue / Journal Title

Journal of advanced materials    ISSN  1070-9789   CODEN JADMEK 

Source / Source

2009, vol. 41, no3, pp. 5-17 [13 page(s) (article)] (18 ref.)

Langue / Language

Anglais

Editeur / Publisher

Society for the Advancement of Material and Process Engineering, Covina, CA, ETATS-UNIS  (1993-2011) (Revue)

Mots-clés anglais / English Keywords

Experimental study

;

Submarine

;

Sonar

;

Application

;

Acoustic properties

;

Transparency

;

Composite material

;

Mechanical properties

;

Bending strength

;

Modified material

;

Multiwalled nanotube

;

Nanocomposite

;

Epoxy resin

;

Concentration effect

;

Carbon nanotubes

;

Dispersion reinforced material

;

Mots-clés français / French Keywords

Transparence acoustique

;

Module flexion

;

Etude expérimentale

;

Sous marin

;

Sonar

;

Application

;

Propriété acoustique

;

Transparence

;

Matériau composite

;

Propriété mécanique

;

Résistance flexion

;

Matériau modifié

;

Nanotube multifeuillets

;

Nanocomposite

;

Epoxyde résine

;

Effet concentration

;

Nanotube carbone

;

Matériau renforcé dispersion

;

Mots-clés espagnols / Spanish Keywords

Estudio experimental

;

Submarino

;

Sonar

;

Aplicación

;

Propiedad acústica

;

Transparencia

;

Material compuesto

;

Propiedad mecánica

;

Resistencia flexión

;

Material modificado

;

Nanocompuesto

;

Epóxido resina

;

Efecto concentración

;

Material renforzado dispersión

;

Localisation / Location

INIST-CNRS, Cote INIST : 17442, 35400018711060.0010

Nº notice refdoc (ud4) : 21646927



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