Accession Number : AD0835379

Title :   ADVANCED METHODS TO TEST THIN GAGE MATERIALS.

Descriptive Note : Final rept. 1 Aug 66-31 Oct 67,

Corporate Author : SOLAR TURBINES INTERNATIONAL SAN DIEGO CA

Personal Author(s) : Rose, F. K. ; Stokes, J. L.

Report Date : APR 1968

Pagination or Media Count : 108

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. (Author)

Descriptors :   (*METAL PLATES, MECHANICAL PROPERTIES), MODULUS OF ELASTICITY, NOTCH SENSITIVITY, STRAIN(MECHANICS), STRESSES, TENSILE PROPERTIES, TOUGHNESS, YIELD POINT, STRAIN GAGES, FRACTURE(MECHANICS), FRACTOGRAPHY, LOADS(FORCES), NONDESTRUCTIVE TESTING, CREEP STRENGTH, ELECTRICAL PROPERTIES, TABLES(DATA).

Subject Categories : Metallurgy and Metallography
      Test Facilities, Equipment and Methods
      Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE