A Study of Factors Influencing the Tensile Fatigue Behavior of Yarns

Frank, Friederike; Singleton, R. W.

doi:10.1177/004051756403400103

Cited by 21 publications

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“…Substituting equation (1) in (3) will give: (4) Performing the differentiation on the left and writing the definition of the hyperbolic sine function in terms of exponential functions on the right would yield: (5) Equation (5) is a nonlinear differential equation and can not be solved analytically. Taylor expansion for an exponential function is as follows: (6) In order to linearize equation (5), we substitute the first order of Taylor expansion for the exponential function on the right side to get: (9) Equation (9) is a first order linear differential equation with the following integration factor: (10) The general solution of equation (9) is: (11) In equation (11), C is the integration constant and is determined using boundary condition.…”

Section: Theoretical Analysesmentioning

confidence: 99%

Modeling the Fatigue Behavior of Plain Woven Fabrics Constructed from Textured Polyester Yarn

Asayesh

Jeddi

Ghadimi

2009

Textile Research Journal

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Fatigue is the decay of mechanical properties after repeated application of stress or strain that can lead to the failure. The fatigue behavior of textile materials is important not only during the textile process such as warp yarn fatigue during weaving, but also in their performance in technical and medical applications such as tyre cord, composite fabrics, ventricular restraint devices and artificial vascular grafts. Some experimental works have been performed by previous researchers on the fatigue behavior of fibers, yarns and fabrics. However, no theoretical and modeling studies have been observed on these materials.Lyons [1, 2] studied the tensile fatigue behavior of some textile fibers and his results showed that the stroke, frequency of cyclic loading and temperature affect the fatigue behavior. He observed that the number of cycles that the fiber sample withstands before rupture increases with increasing frequency, even though the time to rupture decreases. He also showed that at a constant frequency, with increase in stroke, there is a consistent decline in average lifetime. The same result was reported by Prevorsek and Lyons [3,4], who investigated the effect of stroke on the fatigue lifetime of a number of man-made fibers under tensile fatigue. Frank and Singleton [5] studied the factors influencing tensile fatigue behavior of yarns. They found that plasticizers in the form of heat and/or water tend to increase the fatigue life of yarns. 1 They observed that the withstand strengths of nylon, polyester and viscose rayon yarns against the cyclic deformation based on the frequency of cycle straining, temperature, humidity of ambient, are different from each other and depend on the structure and physical properties (regain and thermoplastic properties) of these yarns. Anandjiwala et al. [6,7] studied the tensile fatigue behavior of staple yarns under cyclical elongation accompanied by abrasion. They found that increase in the pretension decreases the resistance of the yarn under applied Abstract This study focused on the prediction of fatigue behavior of plain woven fabrics using the yarn fatigue property and the structural-mechanical parameters of the fabric. For this purpose, the Eyring viscoelastic model was developed as a theoretical analysis to predict the fabric elongation while subjected to a constant cyclic load. It was suggested that the elongation of the fabric under constant cyclic load consists of three parts: fabric decrimping arising from yarn slippage in the fabric, yarn decrimping, and finally yarn elongation. Comparison between the theoretical and experimental results for different weave densities of fabric revealed a reasonable agreement between them. It was concluded that an increase in weave density leads to decrease in fabric fatigue.

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Section: Theoretical Analysesmentioning

confidence: 99%

Modeling the Fatigue Behavior of Plain Woven Fabrics Constructed from Textured Polyester Yarn

Asayesh

Jeddi

Ghadimi

2009

Textile Research Journal

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“…The controversy of unimodal and bimodal distributions for tensile fatigue behavior of yarns has been extensively reported and discussed by various researchers [ 3-5, 8, 23, 24, 29, 30 ] . Earlier studies of the tensile fatigue of yarns reported bimodal distributions of fatigue lifetimes [ 3 ], but later studies revealed a preponderance of unimodal Weibull distribution [4,14,23 ] . This poses a formidable problem in understanding the mechanism of yarn failure under cyclic tensile loading, since the mechanism involved in bimodal behavior is inherently different from that in unimodal Weibull distribution.…”

Section: Introductionmentioning

confidence: 97%

“…The ultimate behavior of such staple and multifilament yarns relates to the fatigue behavior of individual fibers and filaments. As with other engineering materials, research workers have studied the fatigue behavior of fibers [ 19,22,[26][27][28] , yams [2,7,9,14,23 ] , tire cords [10,16,34 ] , and fabrics [ 11 ] .…”

Section: Introductionmentioning

confidence: 99%

“…Following these early experimental findings, statistical development in the area of extreme value theory [ 18 ] and its application to the fatigue phenomenon of various metals was originally due to Weibull [35 . Taking guidelines from other engineering materials, research workers in textiles showed that cyclic fatigue behavior of fibers [ 19,22,[26][27][28] , yams [ 2,7,9,14,23 ] , tire cords [ 10,16,34 ] , and fabrics [11] ] generally follows the third asymptotic distribution of extreme value theory [ 18 ], commonly termed Weibull. ,-Research findings are inconsistent, however, especially for fatigue of fibers and yarns when predicting the performance of sized yarns during weaving.…”

Section: Introductionmentioning

confidence: 99%

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Tensile Fatigue Behavior of Staple Yarns

Anandjiwala

Goswami

1993

Textile Research Journal

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The failure of warp yarns on a loom is often caused by repeated cyclical elongation at small stresses well below the breaking point applied under static load. The phenomenon, commonly known as fatigue, is caused by the gradually diminishing resistance of the material, attributable to cumulative damage. Generally, there is no prior indication of impending failure due to fatigue. In this work, we have studied the fatigue behavior of warp yarn under cyclical elongation accompanied by abrasion action as measured on a Sulzer-Ruti Webtester on the basis of three criteria—failure, damage rate, and visual appearance. Fatigue behavior expressed in terms of cycles at failure exhibits a wide scatter, displaying a pattern that deviates from normal distribution. A three-parameter Weibull distribution fitted to experimental results consistently displays a unimodal pattern. The rate of fatigue damage expressed in terms of loss in tensile property indicators has proven useful in assessing the fatigue-sustaining capacity of yarn and thereby predicting impending failure. SEM photographs display the abrasion fatigue damage inflicted on the fine structure of yarns and fibers. We have systematically studied, the effect of fatigue parameters that characterize the intensity of fatigue action, such as base tension, speed of fatiguing, abrasion pin position, and strain amplitude.Increasing intensity of fatigue action results in rapid yarn deterioration. Base tension and abrasion pin deflection have profound effects on fatigue. Fatiguing speed and strain amplitude tend to accelerate yarn deterioration, though the experimental results show a slower rate but greater variability. Representing fatigue data based on failure criterion in terms only of characteristic lifetime, which is one of the three parameters of the Weibull distribution, is not enough. A representation in terms of complete distribution yields more useful information about the extent of dispersion and the extreme value in the experimental results.Engineering materials and structures are usually subjected to varying stresses of small magnitude during service [ 31,13 ] . Repeated loading and unloading under small stresses often cause stress concentration and decreased resistance of a material, even when the stress intensity is well below the ultimate strength under static load. The capacity of the material to sustain failure gradually diminishes as the number of stress cycles increases, which is attributable to cumulative damage. This phenomenon of decreased resistance of a material to cyclic stresses is called fatigue [ 31 ] . In practice, the initiation and propagation of accumulated fatigue damage is hard to detect, and generally there is no prior indication of impending failure [ 1 ] . The sudden failure of a material by such a fatigue phenomenon is undesirable in view of unavoidable costly repairs and down-time of the process.Understanding fatigue failure behavior of fabrics under repeated stresses of varying intensities is important for many end-use applications suc...

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“…He stated that the stretching and relaxation of yarn filaments and yarns during fabric deformation resulted in spasmodic pumping of the liquid and led to its distribution over a wide region of the fabric, thus improving the rate of evaporation. Frank and Singleton (1964) designed an instrument capable of recording the load-extension and load-relaxation behaviour of a yarn in cyclic testing, from which energy loss factors of yarn were studied. Otaghsara, Jeddi, and Mohandesi (2009) investigated the tensile and fatigue behaviour of different structures of warp knitted fabrics of different course density.…”

Section: Introductionmentioning

confidence: 99%

Effect of cyclic stress on the transverse wicking behaviour of cotton/lycra knitted fabrics

Raja¹,

Babu²,

Ramakrishnan³

et al. 2013

Journal of The Textile Institute

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It is extremely important to evaluate transverse wicking behaviour of elastic knitted fabric while the fabric simulated in different body motions. In this paper, the effects of short interval dynamic extension and recovery on fabric transverse wicking behaviour were evaluated as the samples were subjected to different rate of extension (speed), different percentage of cyclic extension and different liquid flow rate. For this application, a new cyclic stress instrument was designed and developed to apply repeated dynamic extension and recovery on the fabric. The developed instrument is operated through embedded micro controller programme. The effect of speed, percentage of cyclic extension and flow rate with respect to the dynamic transverse wicking behaviour of elastic knitted fabric has been studied using Box-Behnken experiment model. The experiment model identifies the principal experimental variables such as flow rate, percentage of cyclic extension which has the greatest effect on the transverse wicking behaviour of elastic knitted fabric.

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A Study of Factors Influencing the Tensile Fatigue Behavior of Yarns

Cited by 21 publications

References 0 publications

Modeling the Fatigue Behavior of Plain Woven Fabrics Constructed from Textured Polyester Yarn

Modeling the Fatigue Behavior of Plain Woven Fabrics Constructed from Textured Polyester Yarn

Tensile Fatigue Behavior of Staple Yarns

Effect of cyclic stress on the transverse wicking behaviour of cotton/lycra knitted fabrics

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