An Application of On - line Tension Measurement to the Analysis of Warp Yarn Breakages - Distribution of Tension Peaks for Warp Yarns-

장력 On-line계측의 사절 현상 해석에의 응용-단경사 장력 최대치의 분포-

The yarn tension during weaving process has a significant influence on the product quality and production efficiency of woven fabric. On considering the yarn breakage rate in weaving, the analysis and prediction of yarn tension are very important. Pattern of variation in warp tension, at a given location on loom, with time under a certain specific boundary condition provides a vital piece of information for the analysis of yarn breakage rates. In the present work, variation in yarn tension was measured on a group of warp during weaving, and an attempt was made to extract some information on the variation of the extreme tension acting on the single warp yarns from the experimental results. From the experiments and loading model for a yarn group, it can be concluded that the ergodicity of warp yarn tension in weaving process is unlikely to be valid. The tension peak with respect to time has the characteristics of the normal distribution, while the tension on the ensemble basis has shown to be the Weibull distibution.