ADVANCED METHODS TO TEST THIN GAGE MATERIALS

Abstract

A method is described for the measurement of dynamic shear moduli in thin gage materials. The results indicate that this technique is applicable to materials at least as thin as 0.010 inch. An ultrasonic-pulse technique was used on selected alloys to determine dynamic Young's moduli in short-traverse direction, but was not capable of measuring shear moduli. Static shear moduli were determined from shear panels, torsion of thin-wall cylinders, and uniaxial tensile tests. The fracture characteristics of TZM molybdenum alloy sheet were investigated, and values of fracture toughness were obtained for thinner material because of its tendency to delaminate during testing. The effect of side grooves on the fracture surfaces of symmetrical edge notch specimens and measuring their notched strengths in uniaxial tension. Three different tear tests were evaluated on selected thin gage alloys, the tests gave a good indication of the tear resistance of both types of material.

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1968
Accession Number
AD0835379

Entities

People

  • F. K. Rose
  • J. L. Stokes

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Air Force
  • Composite Materials
  • Creep
  • Elastic Properties
  • Materials
  • Materials Laboratories
  • Measurement
  • Mechanical Properties
  • Mechanical Working
  • Mechanics
  • Modulus Of Elasticity
  • Shear Modulus
  • Sheet Metal
  • Stress Strain Relations
  • Tensile Properties
  • Tensile Strength
  • Tensile Testing

Readers

  • Mechanical Engineering/Mechanics of Materials.
  • Structural Health Monitoring of Composite Structures.