NOPR Community:

Surface Damage to Fibres During Opening in a Rotor Frame

Sun, 01 Dec 1985 00:00:00 GMT

Title: Surface Damage to Fibres During Opening in a Rotor Frame Authors: Salhotra, K R; Chattopadhyay, R Abstract: The combing roller system of fibre separation invariably causes a considerable damage and fibre breakage, observed as minute cuts or bruises on the fibre surface fibre rupture being an extreme case of such damage. Page(s): 193-194

A New Method of Measuring Fibre Transfer In Needle-Punched Fabrics

Sun, 01 Dec 1985 00:00:00 GMT

Title: A New Method of Measuring Fibre Transfer In Needle-Punched Fabrics Authors: Sengupta, A K; Sinha, A K; Debnath, C R Abstract: A ratio recording spectrophotometer was used to estimate the percentage of fibres transferred during needling from the top to the bottom layer of a two-layer bolt. The method gives a fast and reliable estimate of fibre transfer can be used for Qualitative assessment of needling efficiency. Page(s): 191-192

Effect of Medullation on Mechanical Properties of Wool Fibres

Sun, 01 Dec 1985 00:00:00 GMT

Title: Effect of Medullation on Mechanical Properties of Wool Fibres Authors: Rao, Drama; Chopra, S K Abstract: The effect of the extent of medulla on stress-strain and torsional properties of single wool fibres is reported. Medulla decreases stress at all the strains. Swelling is less in medullated fibres. Medulla has little effect on torsion at low strains; at high shear strains the medulla collapses and the fibre fails at low twist. These differences in mechanical properties are explained as due partly to the presence of medulla and partly to the intrinsic changes in the keratin of these fibres. Page(s): 187-190

Bulk Torsional Rigidity of Wool

Sun, 01 Dec 1985 00:00:00 GMT

Title: Bulk Torsional Rigidity of Wool Authors: Rao, D Rama Abstract: A simple torsion pendulum method has been worked out for determining the torsional rigidity of wool fibres in bulk form and for comparing the rigidities of various wools. Medullation and variation in fineness distribution affect the rigidity, and bundle test can resolve such differences also. Page(s): 183-186