Mechanics of Elastic Performance of Textile Materials

Abstract

A technique is developed for the quantitative evaluation of the deformation components of visco-elastic materials when these are subjected to tensile loading, for loads ranging from zero to rupture, under dynamic loading conditions, at constant rates of load, elongation, or strain for different magnitudes of constant rates of load, elongation, and strain. The technique serves not only to determine the mechanism of elastic performance of materials but also to quantitatively evaluate their performance characteristics as engineering materials. A sensitive and responsive instrument for the determination of the dynamic modulus of elasticity of materials under any and all loading conditions, such as those enumerated above, has been developed and is described. The effects of the visco-elastic behavior of high polymers upon their stress-strain relation ships are investigated and discussed.