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(PDF) Ballistic Application of Coir Fiber Reinforced Epoxy ...

Ballistic impact test with 7.62 caliber ammunition revealed that both the plain epoxy and the jute fabric composite have a relatively similar performance of the Kevlar™ and also attended the NIJ ...

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Impact Strengthening of Laminated Kevlar/Epoxy Composites ...

The impact performance of all composites was enhanced by the incorporation of nanofillers. The maximum impact energy was absorbed by a 0.5% MWCNT-incorporated Kevlar/epoxy composite. Overall, this study indicates that improvements in the ballistic strength of Kevlar/epoxy composites may be achieved by utilizing nanofillers.

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High velocity impact response of Kevlar-29/epoxy and …

However, works on ballistic impacts, particularly on Kevlar/epoxy composites are still in their infancy. Hazell et al. [1] have experimentally studied the response of a bonded carbon–fiber-reinforced plastic composite panel to impact, penetration, and perforation by a high-velocity steel sphere.

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What is the performance of Kevlar composites? Due to the ...

The team measured the maximum tensile strength and Young's modulus of a range of material strips, including the original Kevlar, Kevlar epoxy composites and five Kevlar-MWCNT-epoxy composites, each with a different weight percentage (wt%) nanotubes. These nanotubes were synthesized internally with an average length of 450 μm.

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Study on Ballistic Characteristics of Glass-Epoxy-Rubber ...

This article focuses on the Finite Element (FE) analysis of the ballistic performance of the polymer composites consisting of natural rubber (NR), glass-epoxy (GE) and glass-rubber-epoxy (GRE) sandwich of different thicknesses (3, 6 and 9 mm) under the impact of the conical nose projectile for a velocity variation of (180, 220 and 260 m / s).

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Kevlar Armor Plating : 12 Steps (with Pictures ...

We decided our senior year of high school to do something fun for our first semester engineering project. The two of us decided to design and build Kevlar armor plates scaled to our bodies. Over the course of 18 weeks we designed, built and refined our armor plates using several processes including vacuum-forming composites and CNC routing from CAD design on a large scale.

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Energy Absorption and Limit Velocity of Epoxy Composites ...

The absorbed energies of the 200-219 J and limit velocities of 202-211 m/s were found statistically similar to the epoxy composites reinforced with the fique fabric from 15 to 50 vol%. Predominantly, these findings are better than those reported for the plain epoxy and aramid fabric (Kevlar TM) used as stand-alone plates with the same thickness ...

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IMPACT ANALYSIS AND COMPARATIVE STUDY FOR …

Kevlar-Epoxy is used in an armor applications for bulletproof purposes. This project is providing guidance for engineer's guidance while working with Kevlar-Epoxy and S2 glass. In response to the reduce weight of armor, easy for wear. Index Terms — …

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A Review on Natural Fiber Reinforced Polymer Composite …

The promising performance of Kevlar fabrics and aramid had widely implemented in numerous ballistic and bullet proof applications including for bullet proof helmets, vest, and other armor parts provides an acceptable range of protection to soldiers.

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Evaluation of Mechanical Properties of Kevlar Fibre Epoxy ...

Abstract : Kevlar fiber reinforced polymer composites are rapidly growing in manufacturing applications such bicycle tires and racing sails to body armor, bullet proof vests, military helmets, walking boots etc. Kevlar epoxy composite material using the Kevlar fiber and epoxy resin LY-556 was fabricated with manual hand layup procedure.The mechanical characteristics like …

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The High-Velocity Impact Behaviour of Kevlar Composite ...

ballistic behaviour and damage tolerance of Kevlar/epoxy reinforced composites, in which the epoxy matrix is filled with cork powder. The perforation velocity and energy absorption were estimated from experimental tests and damaged area was obtained by both C-scan ultrasound technique and visual inspection from impacted specimens.

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(PDF) Composites for Ballistic Applications

The intermediate composite is made up of aramid fabric (Kevlar) reinforced epoxy (KEV/EPX). The rear layer was made of polycarbonate (PC). A 9 …

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An analytical modeling for high-velocity impacts on woven ...

Sikarwar et al. [11, 12] and Wang Yuanbo et al. [13, 14] studied the analytical and experimental results of the residual velocity and ballistic limit of glass/epoxy and Kevlar/epoxy composite laminates respectively, which are subjected to high velocity impact.

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Ballistic comparison between epoxy-ramie and epoxy …

Epoxy composite 1. Introduction The ballistic protection against high-energy projectiles, such as the 7.62 mm ammunition, is more effectively performed by means of multilayered armor systems (MAS) [1], [2]. These systems combine specific characteristics of different materials that synergistically contribute to the global protective efficiency [3].

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(PDF) Kevlar-based Composite Material and its …

The low stiffness and strength of the Kevlar composite are attributed to the fact that Kevlar fibers had lower wettability with epoxy resin than both glass and carbon fibers.

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Ballistic performance of synergistically toughened Kevlar ...

Ballistic performance of synergistically toughened Kevlar/epoxy composite targets reinforced with multiwalled carbon nanotubes/graphene nanofillers Mathusoothanaperumal Sukanya Nitin, Department of Mechanical Engineering, Sri Sivasubramaniya Nadar College of Engineering, Chennai, Tamil Nadu, India

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Mechanical Characteristics and Adhesion of Glass-Kevlar ...

matrix bond strength [20]. Kevlar fibers are used as core in the lamination sequence to suppress the fracture toughness of the hybrid composite [21]. The ratios of epoxy resin to hardener and the volume fraction are effective tools in the fabrication of composite materials [22]. Kevlar

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(PDF) AN INVENT TO IMPROVE BULLETPROOF VESTS CAPABILITIES

to develop the composite structure that meets the specific requirements of ballistic resistance which used for body protections. using kevlar-29–fiberglass E-glass/epoxy resin with titanium ...

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Ballistic Application of Coir Fiber Reinforced Epoxy ...

In the present work the ballistic performance of MASs using coir fiber mantle, Figure 1, reinforced epoxy composites, as second layer, was for the first time compared to similar MAS with second layer of Kevlar™ with same thickness.This novel comparison was based on the NIJ standard 29 29 National Institute of Justice. NIJ 0101.06: Ballistic resistance of body armor.

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SciELO - Brasil - Ballistic Test of Multilayered Armor ...

Ballistic impact test with 7.62 caliber ammunition revealed that both the plain epoxy and the jute fabric composite have a relatively similar performance of the Kevlar™ and also attended the NIJ standard for body protection.

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Fatigue Behavior of Kevlar Composite with Graphene Filled ...

Kevlar composites reinforced epoxy infused with Graphene nanoparticles. Most of the engineering components used in defense, aerospace, biomedical, automobile industries, military ... for its usage in the bulletproof vests and body amours, but also has dozens of other applications as well. Its tightly woven fibers

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(PDF) Ballistic Performance of Kevlar/Epoxy Composite ...

The objective of this work is to investigate the ballistic affect energy absorption behavior manufactured from Kevlar and jute-epoxy fiber sandwich composite materials by …

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Ballistic Performance Evaluation of Kevlar-Glass Fibre ...

In this paper, the post ballistic impact behaviour of kevlar-glass fibre hybrid composite laminates was investigated against 9×19 mm projectile. Eight different types of composite laminates with different ratios of kevlar woven fibre to glass fibre were fabricated using hand lay-up with epoxy matrix. Ballistic behaviour like ballistic Limit (V50), energy absorption, specific …

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Ballistic Impact Performance of Triangular Corrugated Core ...

This study focused on the design, modelling and the analysis of the dynamic response of sandwich composite armor system, constructed with kevlar 29/phenolic matrix, carbon fiber/epoxy (T300 6k/ Epon 862) and carbon fiber/epoxy (T300 6k/ Epon 862, with 4% carbon nanotube) as top and bottom skins. The core of the sandwich composite armor was …

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Composite Helmet, Ballistic helmets, Military helmets USA ...

PASGT - the original PASGT (Personal Armor System Ground Troops) helmet, the first of the really familiar ballistic plastic helmets. This one actually is made of Kevlar - composite helmets are frequently referred to as 'kevlar helmets' but in reality they are made of a …

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(PDF) Ballistic impact response of Kevlar composites with ...

Kevlar fibres or spectra fiber composites are used for designing personal body armour to avoid perforation. In this study, the ballistic impact behaviour of …

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An Invent to Improve Bulletproof Vests Capabilities

Abstract— Woven laminated Epoxy reinforced with Kevlar and Glass fiber vest plates are subjected to three types of projectiles with three different masses and impact velocities. An invented phenomenon is adopted by using an air gap between two composite plates.

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[PDF] Evaluation of Curing Process for Kevlar 49-Epoxy ...

The Kevlar 49/epoxy composites are tested for compressive strength, tensile strength, flexural strength, hardness, compressive modulus, tensile modulus, flexural modulus and inter laminar shear strength. The reduction of volume fraction is due to pressure compactness of epoxy coated bi-directional Kevlar 49 woven in the composite.

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Polymers | Free Full-Text | Ballistic Performance of Ramie ...

Ballistic tests disclosed an absorbed energy of 130 J, which is higher than those reported for other natural fabrics epoxy composite, 74–97 J, as well as plain Kevlar (synthetic aramid fabric), 100 J, with the same thickness.

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Impact behaviour of GFRP and Kevlar/epoxy sandwich ...

[1] S. Kumar, D. S. Gupta, I. Singh and A. Sharma, Behavior of kevlar/epoxy composite plates under ballistic impact, Journal of Reinforced Plastics and Composites, 29 (2010) 2048–2064. Article Google Scholar [2] S. Atobe, S. Sugimoto, N. Hu and H. Fukunaga, Impact damage monitoring of FRP pressure vessels based on impact force identification, …

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Numerical and experimental evaluation of the mechanical ...

Flexural, tensile, and impact strength of hybrid Kevlar/glass reinforced epoxy composite is studied. Six different types of hybrid composite material were manufactured by hand layup process using different compositions of Kevlar and glass fiber. Tensile, flexural and impact strengths of manufactured samples were investigated using standard tests and …

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Aramid/epoxy composites with angle-laid reinforcement ...

This paper investigates the ballistic impact mechanism of multi-ply aramid/epoxy composites with different laying up structures. Ballistic impact behaviour of the composites was evaluated by their energy absorption capacity and high-speed video observation and analysis.

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Numerical Analysis of Ceramic Mosaic Armor Subjected to ...

The ceramic mosaics are backed by a Kevlar 29/epoxy composite plate. APM2 7.62 mm projectiles are used to impact the integral armor. The 3D FE model is validated by comparison with a real ballistic testing. Ballistic performances of the armor are then examined in detail. 2. Finite Element Modelling 2.1. Model Description

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