Ballistic performance of powder metal Al5Cu-B4C composite as monolithic and laminated armor

2021 ◽  
Vol 63 (6) ◽  
pp. 512-518
Author(s):  
Mehmet Ayvaz ◽  
Hakan Cetinel
Keyword(s):  
Laminated Composite ◽  
Liquid Phase Sintering ◽  
Powder Metallurgy Method ◽  
Metal Composite ◽  
Ceramic Plate ◽  
Pressing Pressure ◽  
Powder Metal ◽  
Ballistic Performance ◽  
Composite Armor ◽  
Ballistic Tests

Abstract In this study, ballistic performances of x wt.-% B4C (x = 5, 10, and 20) reinforced Al5Cu matrix composite samples were investigated as a monolithic and laminated composite armor component. Composite armor plates were produced by the powder metallurgy method. The prepared powders were pressed under 400 MPa pressing pressure. Green compacts were pre-sintered at 400 °C for 30 minutes in order to blow the lubricant. Subsequently, liquid phase sintering was performed at 610 °C for 210 minutes. In ballistic tests, 7.62 mm caliber armor-piercing bullets were used as the ballistic threat. In the ballistic tests of monolithic armors, only 10 mm thick powder metal composite plates were tested. In the ballistic tests of laminated composite armors, these powdered metal plates were layered with 10 mm thick alumina ceramic plate front layers and 10 mm thick AA5083 plates. Although all of the monolithic powder metal composite armors were penetrated, they showed multi-hit capability. All of the laminated composite armors provided full ballistic protection. It was determined that with the increase in B4C reinforcement rate, the ballistic resistance also increased due to the improvement in strength, hardness, and abrasive feature.

scholarly journals The Structural and Mechanical Properties of MoS2-TiB2 Coated on AA7075 Produced by Powder Metallurgy Method

2019 ◽  
Vol 1 (2) ◽  
pp. 11-14
Author(s):  
Taha Alper Yılmaz
Keyword(s):  
Mechanical Properties ◽  
Powder Metallurgy ◽  
Composite Films ◽  
Al Alloys ◽  
Al Alloy ◽  
Powder Metallurgy Method ◽  
Pressing Pressure ◽  
Powder Metal ◽  
Wear Properties ◽  
Space Conditions

AA7075 Al alloys are widely used in the aerospace industry. However, the mechanical properties of these alloys are insufficient in space conditions. AA7075 Al alloy is produced by powder metallurgy method due to the good wear properties. Then AA7075 Al alloys have to be adapted to mechanical properties MoS2-TiB2 composite films are deposited. MoS2-TiB2 composite films were grown on powder metal substrate using CFUBMS method in three different MoS2 target currents. Structural properties of composite films were analyzed by SEM, XRD and XPS methods. The mechanical properties of the films are carried out by microhardness and scratch tester. The best grade value of AA7075 powder metal alloy was made with 800MPa pressing pressure and increased from 2.61g/cm3 to 2.72g/cm3 after sintering. The highest hardness was obtained at the lowest MoS2 target voltage of 4.7GPa. The highest critical load value was obtained as 26N at the highest MoS2 target voltage.

scholarly journals Effect of the Layer Sequence on the Ballistic Performance and Failure Mechanism of Ti6Al4V/CP-Ti Laminated Composite Armor

Materials ◽  
2020 ◽  
Vol 13 (17) ◽  
pp. 3886
Author(s):  
Hong Yu ◽  
Qunbo Fan ◽  
Xinjie Zhu
Keyword(s):  
Stress Distribution ◽  
Failure Mechanism ◽  
Energy Absorption ◽  
Composite Plate ◽  
Laminated Composite ◽  
Rear Face ◽  
Ballistic Performance ◽  
Layer Sequence ◽  
Composite Armor ◽  
Cp Ti

The effect of the layer sequence on the ballistic performance of Ti6Al4V (35 mm)/CP-Ti (5 mm) laminated composite armor, against a 12.7 mm armor piercing projectile, was systematically investigated, both experimentally and computationally. By introducing the Johnson–Cook constitutive model and fracture criterion, the penetrating process of the composite plate was well-simulated. Furthermore, the influence of the layer sequence on the ballistic performance and failure mechanism of the composite plate was evaluated from the perspective of energy absorption and the stress distribution. Numerical simulation results of the macro morphology and penetration depth agreed well with the experimental results. The results showed that the energy absorption histories of each layer and stress distribution of the composite plate were found to be significantly affected by the arrangement sequence. The ballistic performance of Ti6Al4V/CP-Ti was far superior to that of CP-Ti/Ti6Al4V because more energy was absorbed in the early stage of the penetration process, thereby reducing the damage to the rear face. Further studies showed that the first principal stress in both structures was radially distributed in space, but was mainly concentrated at the rear face when the CP-Ti was placed at the front. Therefore, this stress induced cracking and failure in that region and, consequently, lowered the overall ballistic performance.

scholarly journals Enhancement In Ballistic Performance Of Composite Armor Through Nano Ceramic

2019 ◽  
Vol 17 (43) ◽  
pp. 77-84
Author(s):  
Ali M. Bader
Keyword(s):  
High Speed ◽  
Unsaturated Polyester ◽  
System Component ◽  
Ceramic Plate ◽  
Polymer Mixtures ◽  
Ballistic Performance ◽  
High Speed Impact ◽  
Kevlar Fiber ◽  
Polyethylene Fiber ◽  
Composite Armor

In this study, industrial fiber and polymer mixtures were used for high-speed impact (ballistic) applications where the effects of polymer (epoxy), polymericmixture (epoxy + unsaturated polyester), synthetic rubber (polyurethane), Kevlar fiber, polyethylene fiber (ultra High molecular weight) and carbon fiber.Four successive systems of samples were prepared. the first system component made of (epoxy and 2% graphene and 20 layer of fiber), then ballistic test wasapplied, the sample was successful in the test from a distance of 7 m. or more than, by using a pistol personally Glock, Caliber of 9 * 19 mm. The secondsystem was consisting of (epoxy, 2% graphene, 36 layers of fiber and one layer of hard rubber), it was succeeded in testing from a distance of 4 m or more than, by using a pistol personally Glock, Caliber of 9 * 19 mm. The third system made of mixture (80% epoxy + 20% unsaturated polyester) and44 layers offiber and 2% graphene as a composite with 20 layers of fiber outside the composite material, it was successful in testing by using a semi-automatic rifle(AK47) Caliber of 7.62 * 51 mm from a distance of 15 m or more than. The fourth system was prepared from alumina ceramic plate Al2O3 (from damagedlaboratory furnace linings) with composite consisted of (a mixture (epoxy 80%+ 20% unsaturated polyester) and 20% silicon carbide). placed in a cloth bagtogether. It was successful in testing by using a semi-automatic rifle (AK47) Caliber of 7.62 * 51 mm from a distance of 15 m or more than.

Simulation on Ballistic Performance of Ceramic/Metal Composite Armor

2012 ◽  
Vol 581-582 ◽  
pp. 759-763
Author(s):  
Yu Jia ◽  
Fei Xiang He ◽  
Li Ping Shi ◽  
Xin Tao Wang
Keyword(s):  
Metal Composite ◽  
Ballistic Performance ◽  
Residual Velocity ◽  
Damage Area ◽  
Composite Armor

In this paper, we will simulation three different structures of the ceramic/metal armor by ansys Ls-dyna, under the condition of the same thickness ceramic. In the paper, every structure was impacted with the flat-ended ballistic with 600m/s velocity. Through calculation we find that the case2 and case3 has the nearly equal residual velocity, lower than the case1, so the case2 and case3 are superior to the case1, but case3 has the smallest damage area, so that the case3 has the most excellent ballistic performance, especially on the performace of multi-hit.

Study on the Ballistic Performance of Ceramic Composite Armor with Different Adhesive

2010 ◽  
Vol 139-141 ◽  
pp. 308-313 ◽  
Author(s):  
Ju Bin Gao ◽  
Yang Wei Wang ◽  
Ling Yu Zhang ◽  
Guo Feng Han ◽  
Fu Chi Wang
Keyword(s):  
Mechanical Properties ◽  
Acoustic Impedance ◽  
Ceramic Composite ◽  
Metal Composite ◽  
Ballistic Performance ◽  
Nano Sio2 ◽  
Composite Armor ◽  
Ballistic Test ◽  
Ceramic Composite Armor

Adhesive is an important part of ceramic-metal composite armor. In order to obtain excellent ballistic performance, some adhesive with a variety of content of nano-SiO2 was prepared, and mechanical properties and ballistic test were conducted. The results show that the pores in adhesive decrease the strength of the adhesive, and the fracture happens along with the pores. To add nano-SiO2 in adhesive can decrease the porosity and the scale of the pores. In the ballistic performance, the adhesive enhance the acoustic impedance, the greater acoustic impedance can increase the energy of transmission wave and decrease the energy of reflection wave, leading to that the ceramic is destroyed slightly. The targets with adhesive added in 20% nano-SiO2 express the best anti-bullet properties. There are so many big blocks left in targets and the height of back convex is only 2.36mm.

IDENTIFIKASI KARAKTERISTIK MEKANIS BANTALAN LUNCUR MOTOR STARTER DARI SERBUK TEMBAGA ALUMUNIUM

2013 ◽  
Vol 12 (3) ◽  
Author(s):  
Syamsul Rizal ◽  
Amin Suhandi
Keyword(s):  
Mechanical Test ◽  
Life Time ◽  
Extrusion Process ◽  
Automotive Application ◽  
Powder Metallurgy Method ◽  
Powder Metal ◽  
Time Operation ◽  
Different Temperatures ◽  
Automotive Parts ◽  
Solid Form

There are many attempts to support the development of industry in Indonesia, especially on automotive sector, one of them is by replacing import components with local component products. Bushing is one of imported component that widely used on automotive application including motor strater. Bushing usually made of  copper alloy such as brass, bronz or babbit in a solid form by casting or extrusion process. In this research powder metal technology is used to process Cu-Al powder to become slide bearing of motor starter. It is expected that powder metal process not only increasing local content in automotive parts but also providing better quality by increasing life time of bushing compared to ordinary one. Cu-Al metal powder was compacted at various pressure, i.e: 250 MPa, 350 MPa and 450 MPa, and then all specimens were sintered at different temperatures : 4000C, 5000C dan 6000C for 1 hour.  After sintering specimens were air cooled to room temperature. After physical and mechanical test it can be deduced that bushing made by powder metallurgy method could increase its mechanical properties and as aresult improve its life time operation.  

Ballistic performance of composite structure configurations with high elongation calendered rubber layer laminated to AA5083-H112 aluminum alloy

2021 ◽  
pp. 146442072110145
Author(s):  
Hasan Kasım
Keyword(s):  
Adhesion Strength ◽  
Laminated Composite ◽  
Composite Plates ◽  
Front Face ◽  
Laminated Composite Plates ◽  
Ballistic Performance ◽  
Rubber Layer ◽  
Interface Interaction ◽  
Metal Rubber ◽  
High Elongation

This study aims to determine the ballistic performances of laminated composite plates produced with AA5083-H112 series aluminum and rubber material with high elongation capacity under impact loading. To investigate the effect of rubber compounds, two types of rubber with calendered and damping were prepared. Thanks to the surface treatment applied to the aluminum plates, the rubber–metal adhesion strength was adjusted, and four different laminated composite plate samples were prepared. Calendered rubber was used on the bullet impact surface of all samples, and damping rubber was used on the back. It has been observed that the pressure barrier created by the calendered rubber bullet on the front face provides high performance to absorb energy. A detailed study was carried out on the total thickness of laminated composite plates, the interface adhesion strength between rubber and aluminum layers, and the ballistic performance of aluminum-rubber combinations. It was concluded that the laminated composite plate’s energy absorption would increase, especially by increasing the thickness of the dumping rubber layer on the back of the aluminum sheets. In the strong metal-rubber interface interaction between the rubber and aluminum layer, the bullet is stopped before the pressure barrier is formed. The penetration depth and bulging height increase, and most of the energy are transmitted through the aluminum plate. In the weak metal-rubber interface interaction, a significant portion of the energy is absorbed by the rubber and air thanks to the pressure barrier.

Effect of Al alloy back panel on the dynamic penetration and damage characteristics of ceramic composite armors

2019 ◽  
Vol 9 (7) ◽  
pp. 723-731
Author(s):  
Weilan Liu ◽  
Zhou Chen ◽  
Tengzhou Xu ◽  
Junfeng Hu ◽  
Jiaduo Li
Keyword(s):  
Ceramic Composite ◽  
Composite Layer ◽  
Al Alloy ◽  
Ballistic Performance ◽  
Damage Characteristics ◽  
Composite Armor ◽  
Back Panel ◽  
Dynamic Penetration ◽  
Ceramic Composite Armor ◽  
Hybrid Ceramic

This paper mainly focuses on the investigation of dynamic penetration and damage characteristics of a hybrid ceramic composite armor normally impacted by 12.7 mm armor piercing incendiary projectiles. The hybrid ceramic composite armor was composed of a ceramic cylinder layer, a Ti–6Al–4V plate, an ultrahigh molecular weight polyethylene (UHMWPE) composite layer, and an Al alloy panel. Three different areal densities of composite laminates with 82, 87, and 92 kg/m2 were tested. 3D finite element model of the ceramic composite armor was generated in ABAQUS, and the simulation results were employed to study the damage evolution. The effect of alumina ceramic cylinders layer on the ballistic performance and the failure mechanisms of Ti–6Al–4V and UHMWPE after ballistic impact were examined by experimental and simulative results. According to the numerical and analytical models, an optimal thickness range of Al alloy back panel was found in minimizing areal density of the ceramic composite armor.

A new approach for improving ballistic performance of composite armor

1999 ◽  
Vol 39 (2) ◽  
pp. 103-110 ◽  
Author(s):  
V. Parameswaran ◽  
W. Bentley ◽  
A. Shukla ◽  
R. A. Prosser
Keyword(s):  
Ballistic Performance ◽  
New Approach ◽  
Composite Armor

scholarly journals Preparation and Impact Resistance Properties of Hybrid Silicone-Ceramics Composites

2020 ◽  
Vol 10 (24) ◽  
pp. 9098
Author(s):  
Katarzyna Kośla ◽  
Paweł Kubiak ◽  
Marzena Fejdyś ◽  
Karolina Olszewska ◽  
Marcin Łandwijt ◽  
...  
Keyword(s):  
Impact Resistance ◽  
Young Modulus ◽  
Drop Tower ◽  
Body Armor ◽  
Soft Body ◽  
Ballistic Performance ◽  
Composite Armor ◽  
New Type ◽  
The Impact ◽  
Soft Body Armor

This article presents the method of preparation a new type of ballistic armor based on hybrid silicone-ceramic (HSC) composites with considerable flexibility. An experimental study on the ballistic behavior of HSC composites connected with soft body armor is presented against FSP.22 fragments. The effect of Al2O3 ceramics on the ballistic performance of HSC composite was investigated, and the fragmentation resistance process of the composite armor combining the HSC composite and soft aramid insert is clarified. Furthermore, impact resistance tests made with a drop tower which allows for a gravity drop of a mass along vertical guides onto a sample placed with an energy of 5 J were performed. The results presented in this paper show that the HSC composites can be successfully used as a hard body armor. However, they do not exhibit the properties of absorbing the impact energy generated during the drop tower tests. The test results show that the ballistic performance of composite armors is influenced by the hardness and Young modulus of ceramics and soft body armor panel. Additionally, in the article, the results of mechanical properties of silicones used for preparation of composites were presented and compiled to determine their role in the performance of impact protection.

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