Stab resistance of shear thickening fluid (STF)-treated fabrics

Decker, Michael J.; Halbach, C. J.; Nam, Cihan; Wagner, Norman J.; Wetzel, Eric D.

doi:10.1016/j.compscitech.2006.08.007

Cited by 388 publications

(241 citation statements)

References 41 publications

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“…To achieve this, the continuous phase must induce steric or electrosteric stabilisation in order to enhance the colloid stability. Several carriers can be used for the preparation of the STF, such as ethylene glycol [15,16], water [17] and other organic solvents, however the most used one for structural application is polyethylene glycol due to its tendency to form very stable suspension [4,18] coupled with its biocompatibility.…”

Section: Theoretical Aspectsmentioning

confidence: 99%

“…Liquid body armour based on the inclusion of STF have been studied intensively during the last decade [2][3][4][5], and several commercial products (mostly reinforced soft protections based generally on aramid fibres) are available on the market. However, very few works have been done on the design of stiff composite materials with embedded STF (without the use of aramid woven fabric).…”

Section: Introductionmentioning

confidence: 99%

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Design and Manufacturing of a Novel Shear Thickening Fluid Composite (STFC) with Enhanced out-of-Plane Properties and Damage Suppression

Pinto

Meo

2016

Appl Compos Mater

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The ability to absorb a large amount of energy during an impact event without generating critical damages represents a key feature of new generation composite systems. Indeed, the intrinsic layered nature of composite materials allows the embodiment of specific hybrid plies within the stacking sequence that can be exploited to increase impact resistance and damping of the entire structure without dramatic weight increase. This work is based on the development of an impact-resistant hybrid composite obtained by including a thin layer of Non-Newtonian silica based fluid in a carbon fibres reinforced polymer (CFRP) laminate. This hybrid phase is able to respond to an external solicitation by activating an order-disorder transition that thickens the fluid increasing its viscosity, hence dissipating the energy impact without any critical failure. Several Shear Thickening Fluids (STFs) were manufactured by changing the dimensions of the particles that constitute the disperse phase and their concentrations into the continuous phase. The dynamic viscosity of the different STFs was evaluated via rheometric tests, observing both shear thinning and shear thickening effects depending on the concentration of silica particles. The solutions were then embedded as an active layer within the stacking sequence to manufacture the hybrid CFRP laminates with different embedded STFs. Free vibration tests were carried out in order to assess the damping properties of the different laminates, while low velocity impact tests were used to evaluate their impact properties. Results indicate that the presence of the non-Newtonian fluid is able to absorb up to 45 % of the energy during an impact event for impacts at 2.5 m/s depending on the different concentrations and particles dimensions. These results were confirmed via C-Scan analyses to assess the extent of the internal delamination.

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Section: Theoretical Aspectsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Design and Manufacturing of a Novel Shear Thickening Fluid Composite (STFC) with Enhanced out-of-Plane Properties and Damage Suppression

Pinto

Meo

2016

Appl Compos Mater

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“…8,11 The viscosity recovers rapidly when the shear loading is removed. 11 Due to the excellent energy absorption behavior STF has founded applications in variety of fields such as damping, 14 armor, [15][16][17][18] to name a few. Since the impact resistance of STF is dynamic by nature, it is crucial to understand the dynamic response of the suspensions itself under dynamic loading at various pressures and strain rates.…”

mentioning

confidence: 99%

Dynamic response of shear thickening fluid under laser induced shock

Zhong

Yin

et al. 2015

Applied Physics Letters

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“…It has been reported that STF enhanced fabrics were able to take advantages of STF properties for the enhancement of ballistic performance and stabbing resistance [14][15][16][17]. Work on ballistic and stabbing performance of body armour showed that improved impact resistance of STFimpregnated fabrics could be attributed to the shear thickening behaviour [18][19].…”

Section: Introductionmentioning

confidence: 99%

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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Stab resistance of shear thickening fluid (STF)-treated fabrics

Cited by 388 publications

References 41 publications

Design and Manufacturing of a Novel Shear Thickening Fluid Composite (STFC) with Enhanced out-of-Plane Properties and Damage Suppression

Design and Manufacturing of a Novel Shear Thickening Fluid Composite (STFC) with Enhanced out-of-Plane Properties and Damage Suppression

Dynamic response of shear thickening fluid under laser induced shock

Stabbing resistance of body armour panels impregnated with shear thickening fluid

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