An Ultrasonic Testing Technique for Monitoring the Cure and Mechanical Properties of Polymeric Materials

Abstract

Thin specimens (approx. 10 mils) can be tested using an ultrasonic technique to determine their moduli and Poisson's ratio. For this report, the thin specimen's ultrasonic response is FFT analyzed in an attempt to extend the technique for cure monitoring of polymeric systems. Two such systems are examined and the ultrasonic results compared with differential scanning calorimetry and dynamic mechanical measurements. Two parameters were measured as a function of time: the ultrasonic peak frequency and amplitude. The results suggest that it may be possible to monitor the cure through observation of these two parameters.

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Document Details

Document Type
Technical Report
Publication Date
Aug 22, 1993
Accession Number
ADA274536

Entities

People

  • Eric C. Johnson
  • Jessica D. Pollchik
  • Sherrie L. Zacharius

Organizations

  • The Aerospace Corporation

Tags

Communities of Interest

  • Advanced Electronics
  • Energy and Power Technologies
  • Weapons Technologies

DTIC Thesaurus Topics

  • Acoustic Impedance
  • Acoustic Velocity
  • Air Force
  • Amplitude
  • Composite Propellants
  • Frequency
  • Heat Of Reaction
  • Hydroxyl Terminated Polybutadiene
  • Impedance
  • Materials
  • Measurement
  • Mechanical Properties
  • Mechanics
  • Modulus Of Elasticity
  • Monitoring
  • Propellants
  • Rocket Engines

Fields of Study

  • Materials science

Readers

  • Electromagnetic Wave Scattering and Antenna Radiation Engineering
  • Materials Science (Mechanical Engineering).
  • Thin Film Deposition Science.