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Title: Prediction of spun yarn strength at different gauge lengths using Wei bull distribution
Authors: Rengasamy, R S
Ishtiaque, S M
Ghosh, Anindya
Keywords: Gauge length;Scale parameter;Shape parameter;Spinning;Viscose fibre;Weibull distribution;Yarn tenacity
Issue Date: Sep-2005
Publisher: NISCAIR-CSIR, India
IPC Code: Int. CI.7D02G3/00
Abstract: An attempt has been made for strength forecasting of different spun yarns at any gauge length from the knowledge of strength distribution at a given gauge length as well as the weakest-link scaling theorem. The shape and scale parameters of Weibull distribution have been determined. Yarns produced on each of the four major spinning systems (ring, rotor, air-jet and friction) have been tested for tenacity at a wide range of gauge lengths (0-500 mm). From the Weibull distribution parameters at 10, 50 and 500 mm gauge lengths and by using weakest-link scaling, the tenacity of yarns at other gauge lengths has been calculated. Then the results of theoretical model for yarn strength have been compared with the experimental results. It IS observed that the data of yarn tenacity are well fit to two-parameter Weibull distribution. The Weibull shape parameter diminishes as the gauge length decreases. None of the yarns strictly follows the classical weakestlink theory and there is a considerable change in failure mechanism for all the yarns as the gauge length is varied.
Page(s): 283-289
ISSN: 0975-1025 (Online); 0971-0426 (Print)
Appears in Collections:IJFTR Vol.30(3) [September 2005]

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