THE SPECIFIC TENSILE STRENGTH OF TRIAXIAL FABRICS

Abstract

In this study the tensile testing was made as a function of direction for the triaxial fabrics with 48 yams made by a braiding machine. In the testing, the specimens with different directions from the machine direction were taken out and provided the measurements of the load-elongation curves in the light load.
The results were compared with those of the arthogonal fabrics.
The following conclusions are obtained:
1) The cover factor of triaxial fabrics is shown as;
then α=60 and C=67%.
2) The ratio (n) of the specimen length to chack width and the angle θ between the axis and yarn are varied, the number of kinds of yarns holding both ends is varied between 0_??_3, as shown in Fig. 5.
3) When experiments are made at n=1, triaxial fabrics have less directional properties with regard to the load-elongation than orthogonal fabrics.