Characterizing and modeling of low twist yarn mechanics

Cheung, Benjamin; Carey, Jason P.

doi:10.1177/1558925019866945

Cited by 4 publications

(4 citation statements)

References 14 publications

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“…Flat yarn consist all constituent filament parallel to yarn axis and contribute the maximum to tensile strength, extensibility, bending rigidity of yarns. The contribution of individual filaments in multifilament yarns increases by decreasing the twist angle as factor of Cos h [7].…”

Section: Resultsmentioning

confidence: 99%

Effect of Filament Configuration on Handle and Transmission Properties of Polyester Multifilament Fabrics

Singh

Behera

2020

J. Inst. Eng. India Ser. E

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The configuration of constituent filaments in multifilament woven polyester fabrics plays very crucially to decide the low stress mechanical as well as transmission behaviour of shirting range fabrics. Intermingled, textured, and flat yarns (150/36/5, yarn of total denier 150, 36 filaments in that strand with 5 twist per meter) were used to produce different fabric samples. Twelve fabric samples using various combinations of warp and weft are manufactured with intermingled, textured, twisted, and flat configurations. Fabric samples were characterized to get low-stress mechanical properties by Kawabata Evaluation System (KES-FB) and transmission behaviour was tested by Permetest, air permeability tester, and wickability tester. The presence of textured configured multifilament yarn exhibits high bending elasticity with lower bending hysteresis. The compression behaviour of fabric consists of intermingled warp and textured weft shows the highest compressibility or fullness. The intermingled configuration offers higher total hand value for winter applications with a different combination of weft threads. The highest wicking potential is achieved in case of intermingled warp and textured weft combinations. The moisture transmission rate remains highest with twisted warp twisted weft fabrics.

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Section: Resultsmentioning

confidence: 99%

Effect of Filament Configuration on Handle and Transmission Properties of Polyester Multifilament Fabrics

Singh

Behera

2020

J. Inst. Eng. India Ser. E

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“…However, on the other hand, the obliquity of filaments as a result of applied twists will compromise the contribution of each filament to yarn strength along the loading direction. 46 After evaluating the mechanical properties of the core-sheath yarn with different tpc values (1, 5, and 10), 5 tpc was found to be the suitable twist level for single yarns (Figure S2). As the tpc increases to 10, the yarn strength decreases prominently mainly due to the negative effect from fiber obliquity.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

“…On the one hand, the twists can generate contraction force among filaments to improve yarn strength. However, on the other hand, the obliquity of filaments as a result of applied twists will compromise the contribution of each filament to yarn strength along the loading direction . After evaluating the mechanical properties of the core-sheath yarn with different tpc values (1, 5, and 10), 5 tpc was found to be the suitable twist level for single yarns (Figure S2).…”

Section: Resultsmentioning

confidence: 99%

Dual-Core Supercapacitor Yarns: An Enhanced Performance Consistency and Linear Power Density

Liao

Zhao

et al. 2020

ACS Appl. Mater. Interfaces

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Pliable energy-storage devices have attracted great attention recently due to their important roles in rapid-growing wearable/implantable electronic systems among which yarn-shaped supercapacitors (YSCs) are promising candidates since they exhibit great design versatility with tunable sizes and shapes. However, existing challenges of YSCs include an inferior power output and poor performance consistency as compared to their planar counterparts, mainly due to their unique linear geometry and curved interfaces. Here, a YSC comprising wet-spun fibers of reduced graphene oxide and MXene sheets is demonstrated, which exhibits prominent decreases in the equivalent series resistance and thus increases in the power output upon increasing the length, which is contradictory to the common expectations of a typical YSC, showing revolutionary promises for practical applications. A much higher power density (2502.6 μW cm–2) can be achieved at an average energy density of 27.1 μWh cm–2 (linearly, 510.9 μW cm–1 at 5.5 μWh cm–1) via our unique dual-core design. The YSCs also present good stability upon stretching and bending, compatible with further textile processing. This work provides new insights into the fabrication of textile-based energy-storage devices for real-world applications.

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“…However, the resulting properties are not still sufficient enough and the processing cost is higher [12]. Twisting is an important process, which induce lateral cohesion between filaments of twisted yarns and improve their processability during preform fabrication [8,13], Twisting also help to localise the micro-damages in the yarn [14,15]. The mechanical properties of yarns (tensile strength and modulus) are also influenced by twisting.…”

Section: Introductionmentioning

confidence: 99%

Effect of twist level on the mechanical performance of S-glass yarns and non-crimp cross-ply composites

Dalfi

Tausif

Yousaf

2021

Journal of Industrial Textiles

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High modulus/high strength continuous fibres are used extensively for manufacturing textile preforms, as a reinforcement, for composites due to their excellent specific properties. However, their brittle behaviour and tendency to separate easily into individual filaments or bundles can lead to damages during manufacturing processes such as weaving and braiding. Thus, the critical step in the development of an optimal yarn for textile-reinforced composites is to find an optimum twist, which results in a minimum loss of properties of the composite laminates, while maintaining good processability and sufficient strength for textile and/or composite manufacturing. In this study, twist level has been varied to improve the handling and tensile properties of S-glass yarns (i.e. tensile strength). Varying levels of yarn twist (15–40 twists metre−1) were employed to study its impact on the tensile properties (i.e. tensile strength, modulus, elongation at break etc.). Furthermore, the effect of twist on the tensile properties of non-crimp cross-ply composites produced via vacuum infusion process was studied. It was observed that mechanical performance (i.e. tensile strength properties) of twisted yarns is improved up to 30 twists metre−1 while it is deteriorated at 40 twists metre−1. At yarn level, the experimental results were compared with theoretical estimations utilizing existing models for twisted yarns properties. Discrepancies were observed between experimental and theoretical results especially for high level of twist. The tensile strength and elongation of S-glass cross-ply composites at all levels of twist were higher compared to the composite laminates manufactured by using non-twisted yarns. At composite level, the experimental results were also computed employing rule of mixture and good agreement was observed between experimental and predicted results.

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Characterizing and modeling of low twist yarn mechanics

Cited by 4 publications

References 14 publications

Effect of Filament Configuration on Handle and Transmission Properties of Polyester Multifilament Fabrics

Effect of Filament Configuration on Handle and Transmission Properties of Polyester Multifilament Fabrics

Dual-Core Supercapacitor Yarns: An Enhanced Performance Consistency and Linear Power Density

Effect of twist level on the mechanical performance of S-glass yarns and non-crimp cross-ply composites

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