Comparison of penetration performance and penetration mechanism of w-cu shaped charge liner against three kinds of target: Pure copper, carbon steel and Ti-6Al-4V alloy

Guo, Wei; Liu, Jinxu; Xiao, Yao; Li, Shukui; Zhao, Ziying; Cao, Jianjing

doi:10.1016/j.ijrmhm.2016.07.015

Cited by 23 publications

(13 citation statements)

References 22 publications

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“…The penetration depth of a shaped charge jet is the dominant criterion for evaluating jet performance. Studies on the microstructure of penetrated targets have illustrated the mechanism of jets interacting with targets by observing the representative zone of target materials [ 21 , 22 ]. However, few studies have compared the jet performance of SLM-produced liners and machined liners and further details remain to be discovered.…”

Section: Introductionmentioning

confidence: 99%

Comparison of Shaped Charge Jet Performance Generated by Machined and Additively Manufactured CuSn10 Liners

et al. 2021

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The Selective Laser Melting (SLM) technique has attracted attention in a wide range of manufacturing research areas, including the defense industry because of its high efficiency and good consistency of manufactured material properties. Shaped charge liner is the crucial unit in the shaped charge warhead. However, jet performance formed by SLM-produced liner remains to be studied systematically. In the present research work, the SLM technique was applied to manufacture CuSn10 shaped charge liners. Casted CuSn10 liners were also fabricated using the classical turning method for comparison. The grain size of the SLM-produced liner was found to be much smaller than the machined liner due to the rapid heating and cooling rate during the SLM manufacturing process. This contributed to improved jet performance. A flash X-ray photography system was applied to capture jet stretching appearances. Necking appears at the jet tip formed by the machined liner, while the jet formed by the SLM-produced liner remains continuous. Penetration test results show that the penetration depth of the jet formed by the SLM-produced liner is around 27% larger than that formed by the machined liner. Segments along the sidewall of the penetration tunnels were selected for in-depth micro analysis. Energy dispersed spectrum (EDS) surface scanning results indicate the composition at the side wall of the penetrated tunnel. Metallurgical microscope was applied to distinguish four different phase zones of the target. The width of these different zones indicates the severity of the lateral interaction between the jet and target, which can be adopted to evaluate jet penetration capability. The present study analyzes the factors that influence jet performances and proves that SLM technology is well-adapted in the manufacturing of shaped charge liners.

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Section: Introductionmentioning

confidence: 99%

Comparison of Shaped Charge Jet Performance Generated by Machined and Additively Manufactured CuSn10 Liners

et al. 2021

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“…Improved mechanical properties were verified by static compression and split Hopkinson pressure bar test. The interaction of Cu-W jet with the target material was investigated in [53]. For this reason, three target materials Cu, carbon steel, and Ti-6Al-4V alloy were selected for penetration.…”

Section: Materials For the Liner Of Shaped Chargementioning

confidence: 99%

A Review of Shaped Charge Variables for its Optimum Performance

Khalid

Hussain

Abbas³

2019

Eng. Technol. Appl. Sci. Res.

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Shaped charge is a device for focusing the chemical energy of explosives to a particular point or line for penetration or cutting purpose respectively. They are used for the penetration or cutting of various types of targets on land, water, underground, underwater, or air. Their shape is either conical or linear and consists of explosive, casing and liner. The liner is bent towards the central axis producing a thin hypervelocity jet by the energy released as a result of the explosive detonation. This jet is utilized against the target. Shaped charges can perforate or penetrate targets like aircrafts, ships, submarines, armored vehicles, battle tanks, and bunkers. This paper presents a detailed review of analytical works, computer simulations, and experimental results related to the liner. Among modern diagnostic techniques flash x-rays, radiography is most used in the experiments performed in the last 40 years. Powder metallurgy, which started in the late twentieth century raised the efficiency of shaped charges to new altitudes. The efficiency of the shaped charge depends on numerous factors such as explosive’s type, liner’s material, geometry and metallurgy, manufacturing technique, and casing thickness. Factors concerning the liner’s material, metallurgical advancements, and geometry are discussed chronologically and in detail.

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“…Research has shown that increasing the jet density ρ j and length l can effectively improve the penetration ability of the jet [3]. To further improve the damage ability of an SCJ warhead to an armored target, researchers [4][5][6][7][8][9][10] tried to prepare a W-Cu material to replace the existing pure copper material and increase the jet density; however, Lee [11] found that the contribution of W to the total deformation of a W-Cu jet was very limited. The W-W boundary of W-Cu alloys was prone to fracture during tensile deformation, which limited penetration performance of a W-Cu jet at large stand-off.…”

Section: Introductionmentioning

confidence: 99%

Plastic deformation behavior and constitutive modeling of Cu-50Ta alloy during hot compression

Song

et al. 2022

Mater. Res. Express

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This paper presents a study on plastic deformation behavior of Cu–50Ta alloy at temperatures of 286–473 K and strain-rate of 0.01–6200 s−1. The effects of temperature, strain-rate, and strain on the yield strength, flow stress, and strain-rate sensitivity coefficient were determined. A phenomenological model was established to predict variation of the strain-rate sensitivity coefficient for Cu–50Ta alloy under dynamic compression. A Johnson–Cook constitutive model was established to predict the equivalent stress–equivalent plastic strain relationship under extreme deformation (high temperature and strain-rate). The results showed that the plastic deformation behavior of Cu–50Ta alloy was affected by temperature, strain-rate, and strain. The material exhibited obvious strain-rate strengthening and thermal softening. As the strain-rate increased, the yield strength logarithmically increased. At a temperature of 286 K, the strain-rate increased from 0.01 s−1 to 6200 s−1, and the yield strength increased from 543.75 MPa to 881.13 MPa. In addition, the yield strength linearly decreased as the deformation temperature increased. Under conditions of dynamic deformation, the variation of strain-rate sensitivity coefficient could be expressed as a function of strain-rate and strain. The phenomenological model accurately described the variation of the strain-rate sensitivity coefficient of Cu–50Ta under dynamic deformation conditions. The Johnson–Cook constitutive parameters, calibrated by experimental data, described the plastic deformation behavior of the alloy under high-velocity impact.

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Comparison of penetration performance and penetration mechanism of w-cu shaped charge liner against three kinds of target: Pure copper, carbon steel and Ti-6Al-4V alloy

Cited by 23 publications

References 22 publications

Comparison of Shaped Charge Jet Performance Generated by Machined and Additively Manufactured CuSn10 Liners

Comparison of Shaped Charge Jet Performance Generated by Machined and Additively Manufactured CuSn10 Liners

A Review of Shaped Charge Variables for its Optimum Performance

Plastic deformation behavior and constitutive modeling of Cu-50Ta alloy during hot compression

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