Mechanical response of shear thickening fluid filled composite subjected to different strain rates

Zhang, Xin; Wang, Pengfei; Куркин, А. И.; Chen, Qian; Gong, Xinglong; Zhang, Zhong; Yang, En-Hua; Yang, Jinglei

doi:10.1016/j.ijmecsci.2021.106304

Cited by 41 publications

(11 citation statements)

References 38 publications

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“…However, there are also some cases where STFs are obtained by sonochemical methods [ 32 ]. Silica is a primary choice as a solid phase for STF production [ 16 , 33 , 34 ], but other raw materials such as corn starch [ 35 ], calcium carbonate [ 36 ], titanium dioxide [ 37 ], polymethyl methacrylate [ 38 ], polystyrene [ 39 ], or ethyl polystyrene acrylate [ 40 ] are also used for this purpose. The continuous phase of an STF is usually ethylene glycol [ 41 , 42 ], poly(ethylene glycol) [ 32 , 43 , 44 ], propylene glycol [ 41 ], or poly(propylene glycol) [ 7 , 45 , 46 , 47 ].…”

Section: Introductionmentioning

confidence: 99%

Rheological and Technological Aspects in Designing the Properties of Shear Thickening Fluids

et al. 2021

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This work focuses on shear thickening fluids (STFs) as ceramic–polymer composites with outstanding protective properties. The investigation aims to determine the influence of raw material parameters on the functional properties of STFs. The following analyses were used to characterize both the raw materials and the STFs: scanning electron microscopy, dynamic light scattering, matrix-assisted laser desorption/ionization time-of-flight, chemical sorption analysis, rheological analysis, and kinetic energy dissipation tests. It was confirmed that the morphology of the solid particles plays a key role in designing the rheological and protective properties of STFs. In the case of irregular silica, shear thickening properties can be obtained from a solid content of 12.5 vol.%. For spherical silica, the limit for achieving shear thickening behavior is 40 vol.%. The viscosity curve analysis allowed for the introduction of a new parameter defining the functional properties of STFs: the technological critical shear rate. The ability of STFs to dissipate kinetic energy was determined using a unique device that allows pure fluids to be tested without prior encapsulation. Because of this, it was possible to observe even slight differences in the protective properties between different STFs, which has not been possible so far. During tests with an energy of 50 J, the dissipation factor was over 96%.

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Section: Introductionmentioning

confidence: 99%

Rheological and Technological Aspects in Designing the Properties of Shear Thickening Fluids

et al. 2021

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“…The SHPB system (Figure 9(a)) is widely used to test the mechanical properties of materials at high strain rates varying from 10 2 to 10 4 s À1 . [115][116][117] Recently, SHPB impact testing has been conducted to investigate the stress characteristics or impact responses of STMs [118][119][120][121] and STFCs with a sandwich structure, 122,123 as shown in Figure 9(b).…”

Section: Split Hopkinson Pressure Bar Impactmentioning

confidence: 99%

Shear thickening fabric composites for impact protection: a review

Tan

2022

Textile Research Journal

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Fabrics with proper mechanical properties and high structural designability are frequently selected as the reinforcement of flexible composites. Shear thickening materials (STMs), including shear thickening fluid and shear thickening gel, are dense colloidal suspensions exhibiting an abrupt increase in viscosity with increasing shear rate. Shear thickening fabric composites (STFCs) which combined STM with fabrics, have been increasingly in demand for impact protective applications due to their tremendous potential. Herein, the characteristics of STM and the effects of fabric reinforcement on STFC impact behaviors are discussed for optimizing their properties and structures. Subsequently, the impact behaviors of STFCs obtained by multiple testing approaches with different impact threats are reviewed systematically. Furthermore, a comprehensive summary of the existing literature on stab, drop-weight, split Hopkinson pressure bar, and ballistic impact protective mechanisms of STFCs is presented. It is found that based on the proper selection of STM types, thorough mechanistic explanations of STFC impact behaviors are instructive and could facilitate the development of wearable protective equipment. The purpose of this critical review is to provide a framework for comparison of the effective impact resistances of STFCs across many applications and to discuss issues for future research.

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“…[4][5][6][7][8] Other particles were also been studied for STF preparation such as polystyrene ethyl acrylate (PSt-EA) particles in ethylene glycol (EG), carbon nanotubes and graphene nanoplatelets in polyethylene glycol (PEG200), and polymethylmethacrylate (PMMA) in glycerin-water mixture. [9][10][11] The STF/foam composites were also investigated in several works. STF/Polyurethane (PU) foams were mostly investigated for their mechanical, acoustic and thermal performances, and impact resistance performance of STF/PU foam cored sandwich composites were studied.…”

Section: Introductionmentioning

confidence: 99%

“…[ 4–8 ] Other particles were also been studied for STF preparation such as polystyrene ethyl acrylate (PSt‐EA) particles in ethylene glycol (EG), carbon nanotubes and graphene nanoplatelets in polyethylene glycol (PEG200), and polymethylmethacrylate (PMMA) in glycerin‐water mixture. [ 9–11 ]…”

Section: Introductionmentioning

confidence: 99%

Impact responses of an open‐cell natural rubber foam impregnated with shear thickening fluid

et al. 2021

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This research aims to investigate the impact responses of an impact absorbing material prepared from natural rubber (NR). Shear thickening fluid (STF) was developed in order to improve compatibility, and impact response capability of a NR foam. The material was prepared by impregnating NR foam with STF (30 wt% nanosilica with 10 nm). The obtained material is soft under normal circumstances, but immediately stiff when undergoing sudden impact before softening again. The effects of foam densities (0.098, 0.15, 0.24 g/cm 3 ), STF contents (10, 20, 30 vol%), and fluid filling techniques were investigated. Experimental results show that the absorbed force tends to increase by increasing the foam density and the fluid content. Impact absorption capability of the proposed STF (STFA)/NR foam is higher than that of the conventional STF (STF0)/NR foam. In other words, STFA can improve the impact responses of the material providing comparable results with the commercial kneepad, which has the dilatant behavior.

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Mechanical response of shear thickening fluid filled composite subjected to different strain rates

Cited by 41 publications

References 38 publications

Rheological and Technological Aspects in Designing the Properties of Shear Thickening Fluids

Rheological and Technological Aspects in Designing the Properties of Shear Thickening Fluids

Shear thickening fabric composites for impact protection: a review

Impact responses of an open‐cell natural rubber foam impregnated with shear thickening fluid

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