Accession Number : AD0720727

Title :   Dynamic Tensile Failure by Glycerol.

Descriptive Note : Technical rept.,

Corporate Author : PURDUE UNIV LAFAYETTE IND PROJECT SQUID HEADQUARTERS

Personal Author(s) : Erlich,David C. ; Wooten,David C. ; Crewdson,Richard C.

Report Date : JAN 1971

Pagination or Media Count : 31

Abstract : A tensile strain was induced in shock-loaded glycerol by the intersection of two rarefaction waves, one of which was caused by the partial reflection of a shock from an interface with octane, a material of lower shock impedance. The maximum tensile stress and the subsequent tensile stress relaxation due to void nucleation and growth were measured indirectly by a stress gage placed in the octane. The dynamic tensile strength of the glycerol was calculated to be about 0.25 kbar for an initial tensile stress rate on the order of 10 to the 7th kbar/sec. Calculations indicated that spherical voids in glycerol of between 0.01 and 10 microns in radius follow a viscous growth law under tensile strain, and computations using this growth law showed the influence of initial void radii, void number density, and strain rate upon the macroscopic stress history during cavitation. Several possible void nucleation mechanisms are discussed. (Author)

Descriptors :   (*GLYCEROLS, TENSILE PROPERTIES), LIQUIDS, STRESSES, NUCLEATION, CAVITATION

Subject Categories : Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE