Analysis of metal matrix composite (MMC) applied armor system

Lee, Minhyung; Park, Sang Won; Jo, Ilguk; Lee, Sang-Kwan

doi:10.1016/j.proeng.2017.09.761

Cited by 16 publications

(8 citation statements)

References 3 publications

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“…Cermets can largely replace the standard material in the form of classical ballistic ceramics and the works conducted [24][25][26][27] are aimed at searching for proper structures which absorb the energy of the ballistic impact. The metal matrix composite is mainly used in armouring applications to prevent perforation.…”

Section: Introductionmentioning

confidence: 99%

Assessment of the Impact Resistance of a Composite Material with EN AW-7075 Matrix Reinforced with α-Al2O3 Particles Using a 7.62 × 39 mm Projectile

et al. 2020

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The paper presents the results of studies on the effects of shooting composite materials produced by pressure infiltration with the EN AW-7075 alloy as a matrix and reinforcement in the form of preforms made of α-Al2O3 particles. Composite materials were made with two reinforcement contents (i.e., 30% and 40% vol. of α-Al2O3 particles). The composites produced in the form of 12 mm thick plates were subjected to impact loads from a 7.62 × 39 FMJ M43 projectile fired from a Kalashnikov. The samples of composites with different contents of strengthening particles were subjected to detailed microscopic examination to determine the mechanism of destruction. The effect of a projectile impact on the microstructure of the material within the perforation holes was identified. There were radial cracks found around the puncture holes and brittle fragmentation of the front surfaces of the specimens. The change in the volume of the reinforcement significantly affected the inlet, puncture and outlet diameters. The observations confirmed that brittle cracking dominated the destruction mechanism and the crack propagation front ran mainly in the matrix material and along the boundaries of the α-Al2O3 particles. In turn, numerical tests were conducted to describe the physical phenomena occurring due to the erosion of a projectile hitting a composite casing. They were performed with the use of the ABAQUS program. Based on constitutive models, the material constants developed from the identification of material properties were modelled and the finite element was generated from homogenization in the form of a representative volume element (RVE). The results of microscopic investigations of the destruction mechanism and numerical investigations were combined. The conducted tests and analyses shed light on the application possibilities of aluminium composites reinforced with Al2O3 particles in the construction of add-on-armour protective structures.

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Section: Introductionmentioning

confidence: 99%

Assessment of the Impact Resistance of a Composite Material with EN AW-7075 Matrix Reinforced with α-Al2O3 Particles Using a 7.62 × 39 mm Projectile

et al. 2020

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“…[10][11][12] AA6061-B 4 C is one such composite and found application in a variety of high technology industries like nuclear, friction, and computer hard disks. 13 These are also used as a potential material in the defense (armor components) and aerospace 14,15 sectors.…”

Section: Introductionmentioning

confidence: 99%

“…The poor performance is due to RF particulates which had high abrasiveness, anisotropic, and non-homogeneous features present in the matrix material. 14,15 Moreover, when the process is scaling down to micro-level, these issues become more severe due to the size of RF particle, and grain size (of the matrix material) is comparable to the cutting edge radius of the tool. 16 Therefore, a non-conventional EDM is being reported as a potential process to overcome these limitations while machining the composites.…”

Section: Introductionmentioning

confidence: 99%

A study on geometrical features of electric discharge machined channels on AA6061-4%B₄C composites

Gudipudi

Selvaraj

Chandra

et al. 2020

Measurement and Control

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The aluminum alloy AA6061-4wt.% boron carbide (B4C) particulate metal matrix composites were fabricated by the stir casting method. The die-sinker electric discharge machining was performed to make the rectangular mini channels on these composites. The full factorial experimental design that consists of three input conditions, the current ( I), discharge duration ( T-on), and discharge idle time ( T-off) at three levels each (33 = 27 total runs), was used for experimentation. The volume, V, the taper, θ (along with the depth), the lateral overcut (along the width), and the difference in depth, Δ d (between total depth and depth up to the tapered profile) at entrance and exit cross-sectional profiles of the channel were considered as output responses. The θ, lateral overcut, and Δ d were calculated from the entrance and exit profiles which were obtained by extracting the data points of each channel with the help of an optical profile projector. The computer-aided geometric model was developed to estimate the volume. A set of optimum electric discharge machining parameter levels were identified for maximum V and a minimum of θ, lateral overcut, and Δ d. Analysis of variance was performed to identify the significant parameter and the contribution toward output responses. Results showed that the volume was found to be maximum at higher I (8 A) and lower T-On (25 µs) conditions. The taper was found to decrease with the increase in current but both lateral overcut and Δ d increased. Both I and T-On are found to be the significant parameters affecting both V and Δ d, whereas current is for θ and lateral overcut. In some cases, it was observed that there is a considerable difference in the θ and the lateral overcut values in the entrance and exit portions for the same channel. It is because of the randomly dispersed B4C particles which alter the material removal mechanism.

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“…В [11] изучалось применение металлических матричных композитов (ММК) в многослойной преграде при пробитии ее стрежневым ударником с удлинением 10.6. Рассматривались два типа пластин MMК, которые были изготовлены методом жидкостного прессования: A356/45 wt.% SiC с равномерным распределением частиц SiC и Al7075/45 wt.% B 4 C с частицами B 4 C. Оценка эффективности применяемой бронированной системы MMК была проведена основываясь на глубине проникновения по сравнению с обычной полубесконечной мишенью из мягкой стали.…”

Section: Introductionunclassified

Исследование Защитных Свойств Комбинированного Металлокерамического Материала При Высокоскоростном Ударе

Ищенко¹,

Афанасьева²,

Белов³

et al. 2020

Журнал Технической Физики

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The analysis of ballistics resistance of a combined metal-ceramic material based on high-strength ceramics in conjunction with the intermetallic on high strength metallic substrate layer – (TiB2+NiTi)+Ti in comparison with the steel plates, the titanium alloy BT1-0 plates and the corundum ceramics plates under impact with the steel spherical striker in velocity range about 2500 m/s was carried out. An experimental researches of protective barriers under the high-speed impact were carried out on the high-speed ballistic experimental facility. A mathematical modeling for the porous elastoplastic medium with taking an account various mechanisms of materials disruptions which was modified for mediums with complicated composition was carried out. There is shown, under the considered impact velocity range at breaking through barriers, in spite of low superficial density, a material (TiB2+NiTi)+Ti shows more force impact on the striker and greater penetration resistance then the steel, the titanium and the ceramics.

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Analysis of metal matrix composite (MMC) applied armor system

Cited by 16 publications

References 3 publications

Assessment of the Impact Resistance of a Composite Material with EN AW-7075 Matrix Reinforced with α-Al2O3 Particles Using a 7.62 × 39 mm Projectile

Assessment of the Impact Resistance of a Composite Material with EN AW-7075 Matrix Reinforced with α-Al2O3 Particles Using a 7.62 × 39 mm Projectile

A study on geometrical features of electric discharge machined channels on AA6061-4%B₄C composites

Исследование Защитных Свойств Комбинированного Металлокерамического Материала При Высокоскоростном Ударе

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Analysis of metal matrix composite (MMC) applied armor system

Cited by 16 publications

References 3 publications

Assessment of the Impact Resistance of a Composite Material with EN AW-7075 Matrix Reinforced with α-Al2O3 Particles Using a 7.62 × 39 mm Projectile

Assessment of the Impact Resistance of a Composite Material with EN AW-7075 Matrix Reinforced with α-Al2O3 Particles Using a 7.62 × 39 mm Projectile

A study on geometrical features of electric discharge machined channels on AA6061-4%B4C composites

Исследование Защитных Свойств Комбинированного Металлокерамического Материала При Высокоскоростном Ударе

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A study on geometrical features of electric discharge machined channels on AA6061-4%B₄C composites