Effect of matrix on ballistic performance of soft body armor

Gopinath, G.; Zheng, James; Batra, R.C.

doi:10.1016/j.compstruct.2012.03.038

Cited by 80 publications

(36 citation statements)

References 37 publications

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“…Also, they concluded that the composites failed at a much higher load than neat fabrics because they would require more force to break many yarns simultaneously than to break them one or two at a time. On the contrary of the work of Lee et al, Gopinath et al [21] found that the ballistic performance of laminates with a flexible matrix, is better than the counterparts with a stiff matrix. Similar to pervious work, Wang et al [22] studied the response of composite laminates made of a Dyneema woven fabric and four different resin matrices under impact loading.…”

Section: Introductionmentioning

confidence: 78%

High velocity impact behavior of Kevlar/rubber and Kevlar/epoxy composites: A comparative study

Khodadadi

Liaghat

Bahramian

et al. 2019

Composite Structures

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This paper presents a comparison of behavior and energy absorption of neat Kevlar fabric and polymer matrix composites under high velocity impact loading. Two types of matrices including rubber and thermoset (epoxy) matrices were used in order to study the effect of a hard and brittle matrix compared with the soft and flexible matrix on energy absorption of the composite. Moreover, two types of rubber matrix with high hardness (HH) and low hardness (LH) were used in this study to investigate the effect of rubber matrix formulation on impact resistance of composites. Ballistic impact tests were performed by firing a 10 mm hemispherical projectile onto neat fabric and composites in a velocity range of 30 m/s to 150 m/s for two-and four-layer samples. Results show that the matrix affects the ballistic performance of composites significantly. Rubber matrix enhances the energy absorption of the fabric by keeping composite flexibility. Increase the number of layers for Kevlar/rubber composite results in better ballistic performance. On the contrary, the thermoset matrix leads to an inflexible composite that restricts the fabric deformation and has a negative effect on the fabric's ballistic performance. Finally, damage mechanisms were discussed in detail for each sample.

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Section: Introductionmentioning

confidence: 78%

High velocity impact behavior of Kevlar/rubber and Kevlar/epoxy composites: A comparative study

Khodadadi

Liaghat

Bahramian

et al. 2019

Composite Structures

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“…The stacking sequences of hybrid composite are glass fabric skin with graphite fabric as core and graphite fabric skin with glass fabric core. Gopinath et al [4] emphasized two opposing influence of matrix on ballistic performance of the armor. Matrix engages more yarns and prevents their relative sliding which improves ballistic performance.…”

Section: Introductionmentioning

confidence: 99%

Impact Response of Quasi-Isotropic Asymmetric Carbon Fabric/Epoxy Laminate Infused with MWCNTs

Singh

Rawat

Singh

2016

Advances in Materials Science and Engineering

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Effect of embedding multiwalled carbon nanotubes (MWCNTs) on low velocity impact response of quasi-isotropic asymmetric laminate of plain woven carbon fabric/epoxy was investigated. Laminates were embedded with 0 wt.%, 2 wt.%, and 5 wt.% MWCNTs to improve impact resistance. Impact in laminates was conducted according to ASTM D7136 standard at an impact energy of 94.14 J corresponding to the impact velocity of 6 m/sec. Energy-time response, force-time response, and pyramidal damage area of laminates doped with varying weight percentage (wt.%) of MWCNTs were quantified and compared with laminate without MWCNTs. Absorbed impact energy increases by 13.53% on doping of 2 wt.% MWCNTs, whereas it decreases by 10.49% on doping 5 wt.% MWCNTs. Damage area is reduced on doping 2 wt.% MWCNTs in laminate.

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“…The resin matrix can significantly influence the performance of the bulletproof composites, although the amount of matrix is small (typically in the range 10–20 wt %). Under impact, the resins are involved in energy transfer and absorption and keep the fibers in the distribution beneficial to absorb energy . As well know, the motion of bullets in a gun chamber can produce lots of heat because of friction, so there may be a high temperature around the projectiles.…”

Section: Introductionmentioning

confidence: 99%

Effects of different ionizable groups on the thermal properties of waterborne polyurethanes used in bulletproof composites

Zheng

Luo

et al. 2015

J of Applied Polymer Sci

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The thermal stability of the resin matrix is an important factor affecting the safety performance of fiber-reinforced bulletproof composites (FRBCs) during their service period. In this study, two kinds of waterborne polyurethanes based on polyester diol (PEDL218) and isophorone diisocyanate were synthesized; these were used as the matrix of para-aramid FRBCs. Their thermal stability and thermal decomposition behaviors in a nitrogen atmosphere were studied by dynamic thermogravimetric analysis techniques. The kinetic parameters, including the activation energy (E) and pre-exponential factor (A), were calculated by the Flynn-Wall-Ozawa, Kissinger-Akahira-Sunose, Kissinger, and Satava-Sest ak methods. The results show that the cationic waterborne polyurethane with quaternary ammonium groups has better thermal stability than the anionic waterborne polyurethane with carboxylate groups. Their nonisothermal decomposition mechanisms were studied, and the kinetic parameters were also calculated; this will offer theoretical reference for the manufacturing and application of FRBCs based on waterborne polyurethane. V C 2015 Wiley Periodicals, Inc. J. Appl.Polym. Sci. 2015, 132, 42374.

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Effect of matrix on ballistic performance of soft body armor

Cited by 80 publications

References 37 publications

High velocity impact behavior of Kevlar/rubber and Kevlar/epoxy composites: A comparative study

High velocity impact behavior of Kevlar/rubber and Kevlar/epoxy composites: A comparative study

Impact Response of Quasi-Isotropic Asymmetric Carbon Fabric/Epoxy Laminate Infused with MWCNTs

Effects of different ionizable groups on the thermal properties of waterborne polyurethanes used in bulletproof composites

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