Identification of material properties of orthotropic elastic cylinders immersed in fluid using vibroacoustic techniques.

Journal Article (Journal Article)

A numerical study is presented to show the potential for using vibroacoustic-based experiments to identify elastic material properties of orthotropic cylindrical vessels immersed in fluids. Sensitivity analyses and a simulated inverse problem are shown to quantify the potential for material characterization through the use of acoustic emissions. For comparison purposes, the analyses are also shown with the normal component of the velocity at the surface of the cylinder as the measured response in place of the acoustic pressure. The simulated experiment consisted of an orthotropic cylinder immersed in water with an impact force applied to the surface of the cylinder. The material parameters of the cylinder considered in the analyses were the circumferential and longitudinal elastic moduli, and the in-plane shear modulus. The velocity response is shown to provide sufficient information for characterizing all three moduli from a single experiment. Alternatively, the acoustic pressure response is shown to provide sufficient information for characterizing only the two elastic moduli from a single experiment. The analyses show that the acoustic pressure response does not have sufficient sensitivity to the in-plane shear modulus for characterization purposes.

Full Text

Duke Authors

Cited Authors

  • Rosario, DE; Brigham, JC; Aquino, W

Published Date

  • November 2008

Published In

Volume / Issue

  • 48 / 6-7

Start / End Page

  • 547 - 552

PubMed ID

  • 18757070

Pubmed Central ID

  • PMC2660202

Electronic International Standard Serial Number (EISSN)

  • 1874-9968

International Standard Serial Number (ISSN)

  • 0041-624X

Digital Object Identifier (DOI)

  • 10.1016/j.ultras.2008.07.004


  • eng