A Diffusivity Measurement Technique for Very High Temperatures.

Abstract

The report treats analytical aspects of the Double Disc and Heat Shield Methods developed by the authors for the determination of the diffusivity of materials at very high temperatures. These methods employ a periodic irradiation on one side of a thin disc. The phase shift between the temperature variations of the front and back sides is measured and used to determine the diffusivity of the material. The matrix analysis given shows that only for the back side must the heat loss parameter be known or its effect be eliminated by the above-mentioned methods. The success of the techniques is demonstrated. (Author)

Document Details

Document Type
Technical Report
Publication Date
Aug 30, 1970
Accession Number
AD0715900

Entities

People

  • Ernest H. Zehms
  • Josef Kaspar

Organizations

  • The Aerospace Corporation

Tags

DTIC Thesaurus Topics

  • Diffusivity
  • Heat Loss
  • Heat Shields
  • High Temperature
  • Losses
  • Materials
  • Phase Shift

Fields of Study

  • Materials science

Readers

  • Combustion and Flow Dynamics.
  • Powder metallurgy of Titanium alloys.
  • Theoretical Analysis.