Accession Number : AD0694530

Title :   INTERNAL FRICTION IN NON-METALLIC SOLIDS.

Descriptive Note : Final rept. Nov 66-Sep 68,

Corporate Author : WILKES COLL WILKES-BARRE PA

Personal Author(s) : Holden,S. J. ; Detwiler,D. P. ; Sowa,W. A. ; Woronowicz,T. J. ; Heslin,T. M.

Report Date : JUN 1969

Pagination or Media Count : 100

Abstract : An apparatus, which permits routine measurement of internal friction as low as 2 x 10 to the minus 7th power and Young's modulus as a function of temperature, frequency, and strain amplitude in extremely low loss materials, is presented. The system described herein can be used to investigate a variety of materials and is not hampered by the limitations placed upon composite resonator systems. It has been successfully used to study internal friction in the amplitude-independent and amplitude-dependent regions in pure and CaCl2 doped NaCl. (Author)

Descriptors :   (*INTERNAL FRICTION, MEASUREMENT), (*SODIUM CHLORIDE, INTERNAL FRICTION), MODULUS OF ELASTICITY, STRAIN(MECHANICS), CALCIUM COMPOUNDS, CHLORIDES

Subject Categories : Mechanics
      Solid State Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE