抄録
On the fibre or yarn sliding around a cylinder, the relation of the initial tension to the final tension is given by the following equation (i. e. belting equation): where T is the final tension of fibre or yarn, T0 is the initial tension of fibre or yarn, θ is the lapping angle of fibre or yarn against the cylinder, ρ is the radius of the cylinder, N is the frictional index, a is the constant. From the above equation, one method for calculating the approximate value of the frictional index is stated below.
1) The following equation is derived from the eqation (1): Let then a graph having gradient N and passing through the origin of the coordinate would be expected.
2) The method of the simplest calculation may be expressed by where xi and yi are the values based on the experimental data.
3) The value of dT/dT0 can be obtained by the gradient of two consecutive points given in the experimental data. Then a method for estimating the value of T/T0, is to obtain the mean value of T/T0 for the two consecutive points.
