33--THE SNARLING OF HIGHLY TWISTED MONOFILAMENTS PART II: CYLINDRICAL SNARLING.

An account is given of an experimental investigation of the cylindrical snarling of highly twisted monofilaments. The theory underlying cylindrical snarling is set out, and an expression is derived for calculating the critical twist level at which normal snarling will be replaced by cylindrical snarling. Experiments on rubber filaments are described, and it is shown that there is good agreement between the theoretical and experimental results. Further experiments, in which the specimen was allowed to contract freely or forced into other forms, are also described. It is shown from these experiments that it is difficult to establish the true equilibrium behaviour, since the situation appears to be dominated by frictional effects or by direct barriers to relative movement. [ABSTRACT FROM AUTHOR]