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A Study of Wool's Tensile Strength in Early Stage Processing

机译：羊毛在早期加工过程中的拉伸强度研究

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摘要

The tensile strength of wool during pre-spinning processing is examined in this paper. Both single fiber breaking load and fiber bundle strength are studied. The results confirm that carding causes more fiber damage or strength loss tahn other processes examined. The breaking load of fibers in combed sliver may be significantly higher than that in carded sliver, because combing breaks weak fibers damaged in carding and increases the average fiber diameter in combed sliver by removing some fine fibers. An attempt is made to generate an ideal bundle strength profile from single fiber tensile curves. Compared with the tensile curve of the ideal fiber bundle, the tensile curve of an actual wool bundle shows a relatively higher elongation and lower tenactity, probably due to the between-fiber interactions and relatively poorer fiber orientation in the actual wool bundle. A method of minimizing fiber interaction during bundle strength testing is proposed.
机译：本文研究了预纺过程中羊毛的拉伸强度。研究了单根纤维的断裂载荷和纤维束强度。结果证实，梳理会导致更多的纤维损伤或强度损失，而不是其他过程。精梳棉条中纤维的断裂负荷可能比梳理棉条中的纤维断裂负荷高得多，因为精梳会破坏梳理中受损的弱纤维并通过去除一些细纤维而增加精梳棉条中的平均纤维直径。试图从单纤维拉伸曲线产生理想的束强度分布。与理想纤维束的拉伸曲线相比，实际羊毛束的拉伸曲线显示出相对较高的伸长率和较低的弹性，这可能是由于实际羊毛束中的纤维间相互作用和相对较差的纤维取向所致。提出了一种在束强度测试中最小化纤维相互作用的方法。

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