An Inverse Method to Calculate Material Properties Using an Insertion Loss Test

Abstract

A method for calculating material properties of a material includes conducting two insertion loss tests of the material having a single thickness and a double thickness. These tests are conducted at a zero wavenumber. Utilizing these insertion loss tests, a dilatational wavespeed is computed. The method continues by calculating a shear wavespeed by performing three insertion loss tests of the material at single, double and triple thicknesses. These tests are conducted at a non-zero wavenumber. A shear wavespeed can be calculated from the dilatational wavespeed and these insertion loss tests. Lame constants, Young's modulus, Poisson's ratio, and the shear modulus for the material of interest can then be calculated using the dilatational and shear wavespeeds.

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Document Details

Document Type
Technical Report
Publication Date
Jun 27, 2007
Accession Number
ADD020291

Entities

People

  • Andrew J. Hull

Organizations

  • United States Department of the Navy

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Acoustic Waves
  • Cartesian Coordinates
  • Coordinate Systems
  • Differential Equations
  • Equations
  • Excitation
  • Frequency
  • Insertion Loss
  • Laser Velocimeters
  • Linear Momentum
  • Losses
  • Measurement
  • Modulus Of Elasticity
  • Partial Differential Equations
  • Shear Modulus
  • Transfer Functions
  • Velocimeters

Readers

  • Calculus or Mathematical Analysis
  • Microwave Engineering.
  • Reinforced Composite Materials