Accession Number : AD0465689

Title :   THE RELATIONSHIP BETWEEN STRESS RELAXATION AND CREEP.

Descriptive Note : Technical rept.,

Corporate Author : PRINCETON UNIV NJ FRICK CHEMICAL LAB

Personal Author(s) : Aklonis, John J. ; Tobolsky, Arthur V.

Report Date : JUN 1965

Pagination or Media Count : 25

Abstract : The relationship between stress relaxation and creep is investigated with the aim of mathematically converting between the two types of data. The stress relaxation master curves of five monodisperse polystyrenes are converted to creep master curves using a good approximation for the numerical evaluation of a convolution integral. Master curves generated by analytic functions are used as 'experimental' data to investigate the behavior of creep and relaxation curves as the slop in the transition region changes. It is found that large changes in the slopes of stress relaxation master curves are reflected as minute slop changes in creep master curves under some conditions. It is pointed out that while systems with a narrow distribution of relaxation times and a Maxwell body are almost identical in creep, they should be easily distinguishable in stress relaxation. (Author)

Descriptors :   (*CREEP, STRESSES), (*STRESSES, CREEP), STYRENE PLASTICS, SHEAR STRESSES, RELAXATION TIME, FUNCTIONS(MATHEMATICS), EXPERIMENTAL DATA, TABLES(DATA), ELASTIC PROPERTIES.

Distribution Statement : APPROVED FOR PUBLIC RELEASE