Simulation on yarn strength based on fiber random arrangement in the yarn

Jiang, Zhan; Yang, Jianping; Yu, Chongwen

doi:10.1080/00405000.2013.834575

Cited by 12 publications

(19 citation statements)

References 9 publications

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“…In equation (1), the stress component Q(ε) is enhanced with increases in yarn compactness and packing factor ψ. Thus, yarn strength is positively correlated with compactness according to this equation.…”

Section: F C Os Cosmentioning

confidence: 99%

Strength distribution superiority of compact-Siro spun yarn

Wang

Gao

2019

Journal of Engineered Fibers and Fabrics

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This study examined the superiority of the strength of compact-Siro spun yarn. First, the strength properties of four types of yarn-ring, compact, Siro, and compact-Siro spun yarn-were compared based on an experiment with 9.7 tex and 14.6 tex polyester yarns. Yarn unevenness and compactness were analyzed in terms of their influence on yarn strength. It was determined that compact spinning enhanced the strength distribution by improving the overall yarn compactness. Siro spinning significantly increased the minimum yarn strength by reducing unevenness. Furthermore, compact-Siro spun yarn, which incorporates the advantages of both compact and Siro, remarkably improved the yarn strength distribution. These results were verified in the first part of the experiment. Finally, the four types of yarn were applied in the same weaving process. The results indicated that the efficiency of weaving with compact-Siro pure polyester yarn was higher than that of other methods by 3%-6%, thereby confirming the superior productivity of the method.

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Section: F C Os Cosmentioning

confidence: 99%

Strength distribution superiority of compact-Siro spun yarn

Wang

Gao

2019

Journal of Engineered Fibers and Fabrics

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“…Considering the variance of fiber number in each yarn cross-section, calculation of yarn strength based on fiber random arrangement in the yarn 15 was adopted in this study. Model development has transformed fibers from helices into straight structures, which makes the description of yarn strength more intuitive.…”

Section: Modeling Of Yarn Strengthmentioning

confidence: 99%

“…It is known that if yarn breaks, fibers may break or slip in the yarn breaking section, which is decided by critical slipping length. 12–16 Assume all constituent fibers are completely straight and parallel to the yarn axis, and take one fiber in the yarn that is subjected to tensile load for consideration. It is assumed that the fiber is subjected to uniform lateral compressive stress q during the yarn stretching process.…”

mentioning

confidence: 99%

“…However, these studies were based on the assumption that the number of fibers in each yarn cross-section is constant, which does not reflect the reality of actual yarn structure. Considering the variance among cross-sections of a yarn, Jiang 15 calculated yarn strength by simulating fiber random arrangement in the yarn. Based on critical slipping length, fibers that slip or break in each yarn cross-section could be recorded by computer programing, and yarn strength could be expressed as the minimum strength of each yarn cross-section.…”

mentioning

confidence: 99%

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Estimation of yarn strength based on critical slipping length and fiber length distribution

Jiang

Yang

et al. 2017

Textile Research Journal

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Yarn strength is composed of the total contributions made by all breaking and slipping fibers which are determined by critical slipping length lc. Though the definition of lc has been the focus of many research projects, it still remains unsolved. In this study, idealized assumptions were made on yarn structure, and lc was then estimated. At the same time, the actual contributions that breaking fibers and slipping fibers make to yarn strength were recalculated based on an idealized yarn structure, which was analyzed with the conditional probability method according to fiber length distribution. Then, yarn strength was computed by simulating random fiber arrangement in the yarn. It could be seen from calculated results that the critical slipping length declines as yarn twist multiplier increases. Meanwhile, as the twist multiplier increases, the calculated yarn strength rises to the highest point and then declines, which is in agreement with traditional spinning theory. Thus, the calculation of yarn strength based on critical slipping length could reflect the yarn breaking mechanism with a change in the yarn twist multiplier, and could be applied for further prediction of yarn strength.

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“…Previous research on the relationship between carding and fiber length was focused on the impact of fiber length on the performance of yarns. Exemplar studies are effect of fiber length on yarn strength, [2][3][4][5][6] quality, 2,4,[7][8][9] hairiness, 10 elongation, 4,11 and the relationship between fiber length and the carding process. 12,13 Overall, results of these studies were conflicting.…”

Section: Introductionmentioning

confidence: 99%

The role of staple fiber length on the performance of carded, hydroentangled nonwovens produced with polypropylene fibers

Tabor

Wust²,

Pourdeyhimi

2019

Journal of Engineered Fibers and Fabrics

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Carding is a common web-forming process used for staple fibers in the nonwovens industry. Staple fibers may be produced in many different lengths. However, the effect of staple fiber length on the nonwoven carding process and structure–property relationships of carded, hydroentangled nonwoven fabrics is not well understood. During this research, polypropylene fibers with lengths ranging from 2.54 to 15.24 cm were produced, carded, and bonded by hydroentangling. All fiber lengths used during this research were successfully carded. Fabrics were characterized via scanning electron microscopy analysis as well as basis weight, thickness, and solid volume fraction measurements. Fabric performance was evaluated with air permeability and burst strength testing. Data sets were statistically evaluated with one-way and two-way analysis of variance to determine whether fiber length significantly affected fabric structure and properties. In general, the fabrics’ solid volume fractions and burst strengths were not significantly affected by fiber length. However, air permeability of the samples did show significant change with fiber length.

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Simulation on yarn strength based on fiber random arrangement in the yarn

Cited by 12 publications

References 9 publications

Strength distribution superiority of compact-Siro spun yarn

Strength distribution superiority of compact-Siro spun yarn

Estimation of yarn strength based on critical slipping length and fiber length distribution

The role of staple fiber length on the performance of carded, hydroentangled nonwovens produced with polypropylene fibers

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