Autographic load-elongation apparatus for fibers

Abstract

An autographic load-elongation apparatus for testing single fibers is described. The apparatus is adapted to making a continuous load-elongation record at constant rate of elongat ion and to making a point by point record at constant rate of loading. It is also useful for obtaining relaxation curves for single fibers. It combines the principles of a hand-operated machine developed in this laboratory an,d an automatic electronic balance developed by Muller and Garman (5).2 Sensitive automatic operation is attained by means of photoelectric controls, and autographic recording in rectangular coordinates is provided. Examples are given of the performance of the apparatus.