Empirical study of the high velocity impact energy absorption characteristics of shear thickening fluid (STF) impregnated Kevlar fabric

Park, Yurim; Kim, Yun‐Ho; Baluch, Abrar H.; Kim, Chun-Gon

doi:10.1016/j.ijimpeng.2014.05.007

Cited by 127 publications

(46 citation statements)

References 11 publications

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“…PEG can be made to have different molecular weight, such as PEG200, PEG400 and PEG600. Park et al [22] found the molecular weight of PEG would not affect the STF performance significantly, and accordingly only PEG200 was chosen for the current research for the investigation into the nanoparticle size and particle weight fraction. Additionally, PEG200 has the lowest viscosity and is easier for production of STFs.…”

Section: Preparation Of Shear Thickening Fluidsmentioning

confidence: 99%

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Stabbing resistance of body armour panels impregnated with shear thickening fluid

Chen

Wang

et al. 2017

Composite Structures

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Please cite this article as: Xu, Y., Chen, X., Wang, Y., Yuan, Z., Stabbing r esistance of body ar mour panels impr egnated with shear thickening fluid, Composite Structures (2016), doi: http://dx.doi.org/10. 1016/ j.compstruct.2016.12.056 This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. Stabbing resistance of body armour panels impregnated with shear thickening fluid AbstractThis paper presents an investigation on the use of shear thickening fluid (STF) to improve stabbing resistance of soft ballistic body armour. STFs were produced from polyethylene glycol and silica nanoparticles. The effects of silica nanoparticle sizes and silica nanoparticle weight fraction were studied and STFs made with the different compositions were used to impregnate the Twaron ® woven fabrics. Systemic investigations into rheological behaviour of STF were carried out experimentally on STFs with different compositions. STF impregnated woven fabric panels were created and tested for stabbing resistance. Stabbing impact tests were conducted on 6 different types of STF impregnated fabric panels against 2 untreated fabric panels, and the results were studied against the benchmark fabrics without STF impregnation. Based on the same number of layers of fabric, the STF impregnation improves the stabbing resistance notably. For same panel areal density, the STF impregnated panels outperform the untreated fabric panel. The results of this research indicate the possibility of lighter ballistic panel materials for higher stabbing protection. It was also found that higher nanoparticle weight fraction and larger nanoparticle size of silica leads to better stabbing resistance performance among the STF impregnated panels.

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Section: Preparation Of Shear Thickening Fluidsmentioning

confidence: 99%

“…The failure of the STF impregnated structure is by rupture of fibres and yarns rather than their slippage. Some other studies showed that the enhancement of impact resistance was due to higher inter-yarn friction in the fabric brought by STF with constraining the pull-out of yarns [18,[21][22][23].…”

Section: Introductionmentioning

confidence: 98%

Stabbing resistance of body armour panels impregnated with shear thickening fluid

Chen

Wang

et al. 2017

Composite Structures

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“…nano silica) suspended in carrier fluid [8]. STF is a nonNewtonian fluid that exhibit shear thickening behaviour when stress applied to the fluid.…”

Section: Shear Thickening Fluids (Stf)mentioning

confidence: 99%

A Review on Stab and Spike Resistance Performance of Shear Thickening Fluids (STF) Impregnated Fabrics

2017

May 22-24, 2017 Kuala Lumpur (Malaysia) ICLTET-2017, ACBES-2017

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Abstract-This paper provides a brief review on relevant literature related to shear thickening fluids (STF) impregnated fabrics on stab and spike resistance performance. Soft body armours consist of multiple layers of high performance fabric to stop stab and spike threats. To reduce the number of fabric layers on soft body armours, STF has been introduced. STF transforms from liquid state to a solidlike state under applied stress and return to its original state after stress is removed. Hence, several studies were conducted to enhance the stab and spike resistance of fabrics by exploiting STF unique properties. The performance of STF-fabric that affected by several factors, such as fibre properties, fabric architectures, STF rheological properties (particles size, shape and solid volume fraction), STF synthesis and impregnation process will be reviewed in this paper.

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“…Further work on STF was to improve the ballistic performance of fabric impregnated by STF at different load cases [12][13][14][15][16][17][18][19]. Feng et al [18] illustrated the stab resistant properties of fabrics impregnated with STF with sub-micrometer silica and fumed silica particles on quasi-static loading.…”

Section: Introductionmentioning

confidence: 99%

“…Feng et al [18] illustrated the stab resistant properties of fabrics impregnated with STF with sub-micrometer silica and fumed silica particles on quasi-static loading. Park et al [19] studied the energy absorption characteristics of Kevlar fabric impregnated by STF at the velocity between 1 to 2 km/s by experimental and numerical methods. However, very few researches are available to study dynamic performance of the sandwich structure incorporating STF its core [20].…”

Section: Introductionmentioning

confidence: 99%

Dynamic response of symmetrical and asymmetrical sandwich plates with shear thickening fluid core subjected to penetration loading

Tan

Zuo

et al. 2016

Materials & Design

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. (2016). Dynamic response of symmetrical and asymmetrical sandwich plates with shear thickening fluid core subjected to penetration loading. Materials and Design,[94][95][96][97][98][99][100][101][102][103][104][105][106][107][108][109][110] Dynamic response of symmetrical and asymmetrical sandwich plates with shear thickening fluid core subjected to penetration loading AbstractSymmetrical and asymmetrical sandwich plates with a shear thickening fluid (STF) core were designed to be penetrated by a cylindrical projectile at various impact velocities. These STFs consist of SiO2/PEG400, and the volume fractions of SiO2 nano-particles are 54% and 56%, respectively. Failure mode of the rear face sheet of the symmetrical sandwich plate is petal perforation, but the rear face sheet of the asymmetrical sandwich plate failed in plug perforation mode at the velocity of less than 80 m/s and in the petal perforation mode at the velocity faster than 90 m/s. The results showed that both the face sheet and the STF core played different roles in impact resisting properties and energy absorption of the sandwich plate at different impact velocities. The thickness of the rear sheet has a significant influence on the energy absorption at low impact velocity, while this influence can be ignored at high impact velocity. The effects of the particle volume fraction, impact velocity and thickness of rear face sheet on the deformation mechanism and energy absorption of the sandwich plate were also discussed. Abstract: Symmetrical and asymmetrical sandwich plates with a shear thickening fluid (STF) core were designed to be penetrated by a cylindrical projectile at various impact velocities. These STFs consist of SiO 2 /PEG400, and the volume fractions of SiO 2 nano-particles are 54% and 56%, respectively. Failure mode of the rear face sheet of the symmetrical sandwich plate is petal perforation, but the rear face sheet of the asymmetrical sandwich plate failed in plug perforation mode at the velocity of less than 80 m/s and in the petal perforation mode at the velocity faster than 90 m/s. The results showed both the face sheet and the STF core played different roles in impact resisting properties and energy absorption of the sandwich plate at different impact velocities. The thickness of the rear sheet has a significant influence on the energy absorption at low impact velocity, while this influence can be ignored at high impact velocity. The effects of the particle volume fraction, impact velocity and thickness of rear face sheet on the deformation mechanism and energy absorption of the sandwich plate were also discussed. Disciplines Engineering | Science and Technology Studies

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Empirical study of the high velocity impact energy absorption characteristics of shear thickening fluid (STF) impregnated Kevlar fabric

Cited by 127 publications

References 11 publications

Stabbing resistance of body armour panels impregnated with shear thickening fluid

Stabbing resistance of body armour panels impregnated with shear thickening fluid

A Review on Stab and Spike Resistance Performance of Shear Thickening Fluids (STF) Impregnated Fabrics

Dynamic response of symmetrical and asymmetrical sandwich plates with shear thickening fluid core subjected to penetration loading

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