DEFLECTION TRANSMISSION CABLES FOR USE IN THERMAL ENVIRONMENTS IN EXCESS OF 3500F

Abstract

A method of transmitting deflections from a test structure at 3500F to a transducer at room temperature was developed. During high-temperature structural tests, accurate test-specimen deflections can only be determined by use of a test specimen-to-transducer link in which thermal expansion and creep are minimal, to the point of being within the required system accuracy, or accountable. The problems involved in accounting for thermal growths of deflection transmission links used during transient heating and specimen motion directed this program to the development of a system in which thermal growths are minimized. The deflection-transmission-cable link developed during this program consists of water-cooled Invar tubes in an assembly that is spring- loaded to contact the test specimen through a replaceable polycrystalline alumina ceramic tip (Lucalox). The deflection link was evaluated under static and quasistatic test-specimen heating rates and specimen temperatures to 3500F and a 1/2-hr exposure time.

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Document Details

Document Type
Technical Report
Publication Date
Oct 01, 1964
Accession Number
AD0608472

Entities

People

  • Allen T. Green
  • Richard K. Steele

Organizations

  • Aerojet Rocketdyne Holdings

Tags

Communities of Interest

  • Advanced Electronics
  • Weapons Technologies

DTIC Thesaurus Topics

  • Accuracy
  • Air Force
  • Aluminum Oxides
  • Creep
  • Creep Tests
  • High Temperature
  • Materials
  • Measurement
  • Mechanical Properties
  • Mechanical Working
  • Mechanics
  • Modulus Of Elasticity
  • Physical Properties
  • Test And Evaluation
  • Test Facilities
  • Test Methods
  • Thermal Expansion

Readers

  • Electronics Engineering
  • Mechanical Engineering/Mechanics of Materials.
  • Thin Film Deposition Science.