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Experimental determination of the influence of pre-tension on the strength of cotton yarn

Field of Science:Industrial and Manufacturing Engineering
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O_TJ.2026.01.9_9dbd7b22.pdf

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“TEXTILE JOURNAL OF UZBEKISTAN” Scientific-technical journal

“TEXTILE JOURNAL OF UZBEKISTAN” Scientific-technical journal

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This article examines the influence of pre-tension on the strength characteristics of cotton yarn. The strength of textile threads plays a key role in production processes, determining the quality and durability of finished products. One of the factors affecting the mechanical properties of yarn is pre-tension, which can alter its elastic and plastic characteristics. In the course of the study, experiments were conducted on stretching carded rotor-spun cotton yarn with a linear density of T=20 tex. The tests were performed on the "Tenso Master" device under various conditions: without pre-tension and with a tension of F=0.5 cN. Analysis of the averaged stress-strain curves showed that pre-tension increases the strength of the yarn but reduces its elasticity. Samples without pre-tension exhibited greater elongation before breaking, indicating higher plasticity of the material. Nonlinear relationships in the change of the deformation modulus during yarn stretching have been determined. It has been established that the "drop" in the value of the deformation modulus is related to the redistribution of internal stresses in the fibers. The obtained results allow for the optimization of pre-tension parameters to improve the quality of textile materials and reduce defects during processing.

AUTHORS

С.Исмоилова

O'ZBEKISTON RESPUBLIKASI FANLAR AKADEMIYASI M.T.O'ROZBOEV NOMIDAGI MEXANIKA VA INSHOOTLAR SEYSMIK MUSTAHKAMLIGI INSTITUTI

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# strength# mechanical properties# deformation modulus# cotton yarn# pre-tension

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