Yarn pull-out behavior of plain woven Kevlar fabrics: Effect of yarn sizing, pullout rate, and fabric pre-tension

Nilakantan, Gaurav; Gillespie, John W.

doi:10.1016/j.compstruct.2013.02.018

Cited by 88 publications

(66 citation statements)

References 12 publications

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“…Hence if friction is substantial, a large amount of impact energy can be dissipated before penetration takes place. As per literature, earlier experimental [3,[5][6][7] and numerical [4,8,9] investigations also reveal that inter-yarn friction plays a very crucial role in energy absorption mechanism. Therefore an accurate estimation of friction coefficients, both static and kinetic is essential.…”

Section: Introductionmentioning

confidence: 82%

“…In addition to yarn deformation and fracture, yarn pull-out contributes to the dissipation of impact energy significantly [1,2]. Several experiments and numerical simulations have been performed in order to study the yarn pull-out behavior of plain woven Kevlar fabrics [3,4]. Therein it is observed that fabric with higher pull-out force shows better ballistic performance.…”

Section: Introductionmentioning

confidence: 93%

See 1 more Smart Citation

Determination of inter-yarn friction and its effect on ballistic response of para-aramid woven fabric under low velocity impact

Das

Sivamani

Shaw

et al. 2015

Composite Structures

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Section: Introductionmentioning

confidence: 82%

Section: Introductionmentioning

confidence: 93%

Determination of inter-yarn friction and its effect on ballistic response of para-aramid woven fabric under low velocity impact

Das

Sivamani

Shaw

et al. 2015

Composite Structures

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“…1 and 2) is similar to that of Nilakantan and Gillespie (2013), Dong andSun (2009) andZhu et al (2011). It essentially comprises an aluminum alloy frame which holds the fabric specimen in place by means of two aluminum alloy 6061 clamping bars with rubber linings to prevent slippage of the fabric during pre-tensioning, and to protect the clamped fabric from being damaged by the sharp edges of the metal clamping plates.…”

Section: Methodsmentioning

confidence: 99%

Yarn mobility in woven fabrics – a computational and experimental study

Tapie

Guo

Shim

2016

International Journal of Solids and Structures

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a b s t r a c tWith the increasing usage of woven fabrics in various applications, an understanding of inter-yarn friction characteristics is useful for effective employment of such fabrics. Although the yarn pull-out test is a recognized method to ascertain yarn mobility within a weave, the physics governing yarn pull-out has not yet been fully examined, and previous finite element models were unable to reproduce the results of yarn pull-out tests. Consequently, fabric response involving yarn pull-out has not yet been well-understood in terms of the influence of inter-yarn friction and yarn crimp. The work undertaken provides insights into this by proposing a new yarn pull-out test procedure, which involves in-plane and out-of-plane pull-out; the latter is relevant to projectile penetration of fabric, during which yarns are often pulled out of the fabric plane. Pre-tension is also applied to fabric specimens, and its influence on the response is analyzed. The energy absorbed during out-of-plane pull-out is quantified, and yields insights into fabric performance. A finite element model is then developed to simulate yarn pull-out tests. To characterize inter-yarn friction, a Coulombic description that considers both static and kinetic friction, is implemented. The numerical model is able to describe both in-plane and out-of-plane yarn pull-out. The model is validated and used to identify mechanisms that restrain yarn mobility during yarn pull-out and how pre-tension affects this mobility. The local fluctuations in the experimental force-displacement curves are captured by the simulation, and are found to be caused by periodic alteration of the original crimped yarn profile during pull-out. Simulation results also show that most of the energy is dissipated by friction during yarn pull-out, and that the fabric stores strain energy. Pre-tension has a significant influence on both frictional energy dissipation, and strain energy in the fabric. Strain energy is found to be more sensitive to pre-tension than frictional dissipation, indicating that excessive restraint of yarn mobility may result in premature yarn failure.

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“…For instance, Bilisik [12] have investigated the pull-out properties of para-aramid woven fabrics and found that fabric pull-out properties, due to the yarn frictions in the fabric structures, have implications on absorption of impact load. On the issue of the effect of yarn sizing, pull-out speed and fabric pre-tension on the yarn pull-out behavior of woven Kevlar fabrics, it has been reported that these parameters play significant roles in ballistic impact performance of Kevlar fabrics [13]. Upon inter-yarn friction coefficient influence on energy distribution and failure mechanism of Kevlar fabric, Das et al [6] indicated that inter-yarn friction improves the ballistic performance up to a limiting value.…”

Section: Introductionmentioning

confidence: 98%

The influence of carbon nanotubes on quasi-static puncture resistance and yarn pull-out behavior of shear-thickening fluids (STFs) impregnated woven fabrics

Hasanzadeh

Mottaghitalab

Babaei

et al. 2016

Composites Part A: Applied Science and Manufacturing

108

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Yarn pull-out behavior of plain woven Kevlar fabrics: Effect of yarn sizing, pullout rate, and fabric pre-tension

Cited by 88 publications

References 12 publications

Determination of inter-yarn friction and its effect on ballistic response of para-aramid woven fabric under low velocity impact

Determination of inter-yarn friction and its effect on ballistic response of para-aramid woven fabric under low velocity impact

Yarn mobility in woven fabrics – a computational and experimental study

The influence of carbon nanotubes on quasi-static puncture resistance and yarn pull-out behavior of shear-thickening fluids (STFs) impregnated woven fabrics

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