Materials Research for Advanced Inertial Instrumentation. Task 1: Dimensional Stability of Gyro Structural Materials.

Abstract

The literature is reviewed for micromechanical property data for materials used in precision instruments. Microyield strength and microcreep values are presented for general aluminum alloys, 440C stainless steel, and instrument grade beryllium. A method for applying finite element analysis techniques in conjunction with empirical data for instrument grade beryllium to predict micromechanical behavior of instrument components is discussed. A simple component configuration for experimental verification of the prediction technique is presented. The application of finite element techniques to the design of a composite microcreep specimen is presented. The results of preliminary work on studies of micromechanical properties of hot isostatically pressed beryllium are presented. Test specimen preparation, microstrain instrumentation, and problems of alignment of loading are discussed. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Feb 01, 1979
Accession Number
ADA065499

Entities

People

  • F. Petri
  • J. Mccarthy

Organizations

  • Charles Stark Draper Laboratory

Tags

Communities of Interest

  • Ground and Sea Platforms
  • Space
  • Weapons Technologies

DTIC Thesaurus Topics

  • Aluminum Alloys
  • Chemical Engineering
  • Creep
  • Engineering
  • Grain Size
  • Instrumentation
  • Materials
  • Materials Laboratories
  • Materials Science
  • Materials Testing
  • Measurement
  • Mechanical Engineering
  • Mechanical Properties
  • Mechanics
  • Metallurgy
  • Military Research
  • Physics Laboratories

Readers

  • Inertial Navigation Systems.
  • Mechanical Engineering/Mechanics of Materials.
  • Reinforced Composite Materials