Measurement of Aerodynamic Shear Stress Using Side Chain Liquid Crystal Polymers

Abstract

A novel concept was proposed exploiting the optical property response of liquid crystalline materials to various external effects. This study determined the feasibility of using side chain liquid crystal polymers as aerodynamic shear sensors. A method was developed to observe and measure the optical birefringent response of film coatings made from these polymer materials due to applied shear. Different polymers were synthesized, spray-coated and tested for their shear-sensing potential. Empirical results confirmed the promise of this method on future aerodynamic testing.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1992
Accession Number
ADA254312

Entities

People

  • Carlo G. Demandante

Organizations

  • Air Force Institute of Technology

Tags

Communities of Interest

  • Sensors

DTIC Thesaurus Topics

  • Alkenes
  • Chemistry
  • Crystals
  • Image Processing
  • Light Sources
  • Liquid Crystal Polymers
  • Liquid Crystals
  • Materials
  • Measurement
  • Molecules
  • Optical Properties
  • Phase Transformations
  • Physical Properties
  • Polymers
  • Shear Stresses
  • Stresses
  • Transition Temperature

Fields of Study

  • Chemistry

Readers

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