Accession Number : AD0608449

Title :   PRECISION MEASUREMENT OF INTERNAL FRICTION IN NON-METALLIC MATERIALS.

Descriptive Note : Final rept.,

Corporate Author : WILKES COLL WILKES-BARRE PA

Personal Author(s) : Detwiler,D. P. ; Holden,S. J.

Report Date : OCT 1964

Pagination or Media Count : 25

Abstract : Internal friction measurements were made on an outstandingly good quartz crystal. Several internal friction peaks are observed and these are discussed. In addition a previously unreported anomaly is observed in the resonant frequency versus temperature curve for the quartz crystal. These measurements were made over a temperature range of approximately -125C to 300C. The internal friction of sodium chloride was measured at room temperature in a free decay apparatus. (Author)

Descriptors :   (*QUARTZ, INTERNAL FRICTION), (*INTERNAL FRICTION, MEASUREMENT), CRYSTALS, MECHANICAL PROPERTIES, CRYSTAL DEFECTS, SODIUM COMPOUNDS, CHLORIDES, CRYOGENICS, NONMETALS

Distribution Statement : APPROVED FOR PUBLIC RELEASE