Abstract
In this paper, we deal with that phenomenon similar to buckling when textile fabrics are deformed by shearing.
When the shearing deformation of textile fabrics approach a certain value, the stress concentrates along their diagonal line, and some nodal-lines appear on them. This critical deformation may be called the critical angle. This angle can he obtained indirectly from an discontinued point on the load-deformation curve.
From our experiment the following observations may be derived:
(1) The critical angle of sized textile fabrics are smaller than that of the scoured.
(2) The relationship between the tension applied to textile fabrics and the critical angle is linear on the semi-logarithmic co-ordinates, and the tangent is nearly constant independently of their cover factor.
(3) The degree of freedom from the shearing deformation of textile fabrics are inversely proportional to their tightness.
