Vibro-acoustic behaviour in biosourced composites

L. Dobircau, L. Rupert, J. Turner, L. Delbreilh, E. Dargent, J. M. Saiter

Research output: Contribution to journalArticle

1 Scopus citations

Abstract

100% natural composites comprising low protein content wheat flour and bamboo fibers were elaborated by means of an extrusion process using glycerol, water and sorbitol as plasticizers. The morphology, the mechanical properties and the acoustic response of the materials were analysed by means of scanning electron microscopy (SEM), tensile testing and acoustic measurements respectively. The extruded samples showed randomly dispersed bamboo fibers in the wheat flour matrix whereby a clear reinforcement in mechanical properties was observed with increase of the fiber percentage up to 15% w/w. The vibro-acoustic measurements performed by analysing the surface wave propagation of the sound signal show the effects of the fiber dispersion and of the frequency on the damping properties of these new composites. At low frequency, the presence of the fibers is well observed and they play the role of secondary wave sources.

Original languageEnglish (US)
Pages (from-to)56-63
Number of pages8
JournalMacromolecular Symposia
Volume328
Issue number1
DOIs
StatePublished - Jun 2013

Keywords

  • SEM
  • bamboo fiber
  • eco-friendly
  • green composite
  • mechanical properties
  • vibro-acoustic measurements
  • wheat flour

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Organic Chemistry
  • Polymers and Plastics
  • Materials Chemistry

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  • Cite this

    Dobircau, L., Rupert, L., Turner, J., Delbreilh, L., Dargent, E., & Saiter, J. M. (2013). Vibro-acoustic behaviour in biosourced composites. Macromolecular Symposia, 328(1), 56-63. https://doi.org/10.1002/masy.201350606