An investigation is reported on the fatigue life of open-end, ring spun, and siro spun yarns using the technique of biaxial rotation over a pin. Open-end yarns have a sig nificantly higher fatigue life compared to ring spun yams. Mercerization increases fatigue life. For siro spun yams, an increase in strand spacing increases the fatigue life in a linear manner. The effect of the twist factor on fatigue life is interesting, in that maximum life is achieved at a twist factor of 40 and thereafter falls. Yarn density and fatigue life seem to be well correlated.
Get full access to this article
View all access options for this article.
References
1.
Calil, S.F., and Hearle, J.W.S., Fatigue of Fibres by Biaxial Rotation Over a Pin, in " Proc. International Conference on Fracture," Canada, 1977, pp. 1267-1271.
2.
Clark, I.E., and Hearle, J.W.S., Development of the Biaxial Rotation Test for Fatiguing Fibres, J. Phys. E Sci. Instr.12, 1109-1112 (1979 ).
3.
Faasen, N.J., and Van Harten, K., The Effect of Sizing on the Weaveability of Cotton Yams, J. Textile Inst.57, T269-T285 ( 1966).
4.
Goksoy, M., An Alternative Design for Biaxial Rotation Fiber Fatigue Testing, Textile Res. J.58 (4), 210-214 (1988).
5.
Goswami, B.C. , and Hearle, J.W.S., A Comparative Study of Nylon Fiber Fracture , Textile Res. J.46, 55-70 (1976).
6.
Hamilton, J.B. , A Direct Method for Measuring Yarn Diameters and Bulk Densities under Conditions of Thread Flattening. J. Textile Inst.50, T655 (1959).
7.
Hearle, J.W.S. , and Wong, B.S., A Comparative Study of the Fatigue Failure of Nylon 6.6, PET Polyester, and Polypropylene Fibres, J.Textile Inst.68, 89 (1977).
8.
Hearle, J.W.S. , and Wong, B.S., Effect of Air , Water, Hydrochloric Acid, and Other Environments on the Fatigue of Nylon 6.6 Fibres. J. Textile Inst.68, 127 (1977).
9.
Hearle, J.W.S., and Hasnain, N., Fatigue of Cotton Fibres and Yams, in "Proc. Ann. Conf. of the Text. Inst," New Delhi, 1979, pp. 163.
10.
Miller, B., Friedman, H.L., and Turner, R., Design and Use of a Cyclic Tensile Abrader for Filaments and Yarns—A Study of Polyester Monofilament Wear, Textile Res. J.53, 733-740 ( 1983).
11.
Natarajan, K.S., A Study of the Characteristics of Siro Spun Yarns Produced on the Short Staple System, Doctoral thesis, Anna University, 1985.
