Influence of particle size on the low and high strain rate behavior of dense colloidal dispersions of nanosilica

Asija, Neelanchali; Chouhan, Hemant; Gebremeskel, Shishay Amare; Bhatnagar, Naresh

doi:10.1007/s11051-016-3723-4

Cited by 16 publications

(8 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In addition to high shear rates, the ballistic events are also associated with high compressive strain rates (order of 10 5 -10 7 s -1 , [24]). The high strain rate experiments using Split Hopkinson Pressure Bar (SHPB) technique [19,20,24] revealed that the t char of discontinuously shear thickening fluids (with materials and configurations similar to STFs studied here) is in the order of tens of microseconds at compressive strain rates of order 10 4 s -1 . It was also reported that t char of discontinuously shear thickening fluids decreases exponentially with compressive strain rates [19,20] and with particle size of dispersed phase [19].…”

Section: Design Of Stfmentioning

confidence: 72%

“…But for the high strain rate characterization of STF, split Hopkinson pressure bar (SHPB) systems have been used by researchers such as Asija et al [19,21], Lim et al [20] and Cao et al [22]. Asija et al [19] carried out the high strain-rate studies of spherical and fumed silica based STFs. They investigated the peak stress attained during the impact loading of STF and judged the impact resistance provided by the STF.…”

Section: Ballistic Performance Assessment Of the Stfsmentioning

confidence: 99%

“…However, for the shear thickening effect to be practicable and effective the time scale for the transition should be very low. The time required by STF to make a transition from flowable state to thickened state during the impact event is referred to as the characteristic transition time (t char ) and it is unique for each STF configuration [19]. In addition to high shear rates, the ballistic events are also associated with high compressive strain rates (order of 10 5 -10 7 s -1 , [24]).…”

Section: Design Of Stfmentioning

confidence: 99%

See 2 more Smart Citations

Rheology Based Design of Shear Thickening Fluid for Soft Body Armor Applications

Manukonda

Chatterjee

Verma

et al. 2019

Period. Polytech. Chem. Eng.

View full text Add to dashboard Cite

The ballistic resistance of high-strength fabrics improves upon impregnation with Shear Thickening Fluids (STFs). The performance of such STF treated fabrics depends on the rheological properties of the STF which in turn are governed by the physicochemical properties of the STF. The present study utilizes rheological characterization of shear thickening silica-polyethylene glycol dispersions (of different material configurations in terms of packing fraction, particle size and continuous phase viscosity) to assess their performance and obtain the best STF material configuration for ballistic body armor applications based on the design criteria proposed herein.The ballistic performance assessment results showed that the STFs with high packing fractions which thicken discontinuously, are highly effective compared to the continuously shear thickening fluids. Furthermore, the use of smaller particle size dispersed phase in the STF formulation was determined to be economical. Also, the use of lower molecular weight dispersion medium was suggested as it allows for a broader working temperature range of the STF. Additionally, the technological issues associated with the development and the practical application of STF-Armor were addressed.

show abstract

Section: Design Of Stfmentioning

confidence: 72%

Section: Ballistic Performance Assessment Of the Stfsmentioning

confidence: 99%

Section: Design Of Stfmentioning

confidence: 99%

See 1 more Smart Citation

Rheology Based Design of Shear Thickening Fluid for Soft Body Armor Applications

Manukonda

Chatterjee

Verma

et al. 2019

Period. Polytech. Chem. Eng.

View full text Add to dashboard Cite

show abstract

“…The specifications of the setup are given in Table 1 and details are available in the literature. [ 20,27 ] One‐dimensional wave propagation theory was used to estimate the strain, strain rate and stress induced in the specimen. [ 22,28 ]…”

Section: Methodsmentioning

confidence: 99%

Influence of conditioning on the high strain rate compression response of Kevlar thermoplastic composites

et al. 2020

Self Cite

View full text Add to dashboard Cite

Kevlar reinforced composite material systems are widely used for personal body armors. Due to aging or minor damage while in service, body armor may get exposed to external weather conditions, including moisture. The present study investigates the effect of moisture on the high strain rate behavior of Kevlar/Polypropylene (K‐PP) composite. Flat K‐PP composite laminate was manufactured using a vacuum‐assisted compression molding followed by laser machining. Dynamic compressive loading tests were performed using split Hopkinson pressure bar setup. The phenomenological modeling approach was adopted to characterize the rate‐dependent behavior of dry and wet composites. For identical dynamic compressive loading, different strain rates, strains, and stresses were attained by the dry and wet composite specimens. Macroscopic and microscopic imaging was done to expose the variation in damage behavior as a function of moisture absorption. Significant property reduction as a function of moisture absorption emphasizes the need for moisture proofing and protecting the armor products from minor damages leading to sites for moisture ingress.

show abstract

“…This may be partially accounted for via shear stress scaling through the Brownian stress [133]. Furthermore, a rise in the particle size increased the viscosityand shear thinning degree before shear-thickening occurred [134].…”

Section: Parameters Influence the Shear Thickeningmentioning

confidence: 99%

Impact characteristics of soft composites using shear thickening fluid and natural rubber–A review of current status

Khodadadi

Liaghat

Taherzadeh‐Fard

et al. 2021

Composite Structures

View full text Add to dashboard Cite

Influence of particle size on the low and high strain rate behavior of dense colloidal dispersions of nanosilica

Cited by 16 publications

References 36 publications

Rheology Based Design of Shear Thickening Fluid for Soft Body Armor Applications

Rheology Based Design of Shear Thickening Fluid for Soft Body Armor Applications

Influence of conditioning on the high strain rate compression response of Kevlar thermoplastic composites

Impact characteristics of soft composites using shear thickening fluid and natural rubber–A review of current status

Contact Info

Product

Resources

About