Determine mechanical properties of particulate composite using ultrasound spectroscopy

Junru Wu, Christopher Layman, Sanjeeva Murthy, Ruey Bin Yang

Research output: Contribution to journalArticlepeer-review

5 Scopus citations


It is known that microscopic spherulite growth plays an important role in macroscopical properties such as elastic moduli of some semicrystalline polymers. Ultrasonic spectroscopy can be used to quantitatively determine the role of spherulites. As a first approximation, spherulitic polymers are modeled as a material with spherical inclusions in an amorphous matrix. This two-phase composite model is then physically realized by embedding glass micro-spheres in an epoxy. The dynamic mechanical properties of these composites are experimentally determined by measuring their acoustic properties such as phase velocity and attenuation. Acoustic scattering theories are then applied to this model to test their predictive capabilities for the real composite's mechanical properties.

Original languageEnglish (US)
Pages (from-to)e793-e800
Issue numberSUPPL.
StatePublished - Dec 22 2006
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Acoustics and Ultrasonics


  • Mechanical properties
  • Multiple scattering
  • Polymer
  • Ultrasound spectroscopy


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