Laser Measurements of Elastic Moduli of Voided Polymers

Abstract

The two complex elastic moduli (and the corresponding shear and longitudinal sound speeds) of a voided polymer have been measured as a function of frequency between 0.5 and 2.5 kHz by laser Doppler interferometry and finite element modeling. The measurement errors associated with this new technique are discussed.

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Document Details

Document Type
Technical Report
Publication Date
Oct 20, 1997
Accession Number
ADA331898

Entities

People

  • Yves H. Berthelot

Organizations

  • Georgia Tech

Tags

Communities of Interest

  • Air Platforms
  • Sensors

DTIC Thesaurus Topics

  • Acoustic Properties
  • Acquisition
  • Bulk Modulus
  • Butyl Rubber
  • Contract Administration
  • Elements
  • Errors
  • Experimental Data
  • Frequency
  • Materials
  • Measurement
  • Mechanical Engineering
  • Modulus Of Elasticity
  • Polymers
  • Secondary Waves
  • Statistical Analysis
  • Waves

Fields of Study

  • Physics

Readers

  • Mechanical Engineering/Mechanics of Materials.
  • Optical Physics and Photonics.

Technology Areas

  • Directed Energy