Metallic witness packs for behind-armour debris characterisation

Verolme, J.L.; Szymczak, M.; Broos, J.P.F.

doi:10.1016/s0734-743x(99)00016-0

Cited by 3 publications

(2 citation statements)

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“…Grady [1]came up with the model of fragmentary material. Verolme and Szymczak [2] put forward a mathematical model computing velocity and mass of debris in debris cloud based on combination of theory and practice. Mayseless [3] presented distribution model of BAD based on the previous researches which raised by others and regarded that the shape of debris cloud is ellipsoid.…”

Section: Introductionmentioning

confidence: 99%

Research on mass distribution characteristics of the behind armor debris of the EFP penetrating target

Huang

et al. 2023

J. Phys.: Conf. Ser.

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Based on the AUTODYN, a numerical simulation model for EFP warhead penetrating finite thickness target was established, and the mass distribution characteristic of the armor debris behind target was analyzed. The result shows that the whole mass of behind armor debris(BAD) of the EFP with 1790m/s and target with 0° inclination angle increased and the quantity of BAD firstly increased and then decreased as target thickness ranging from 10mm to 70mm. For the experiments with employing the EFP with 1790m/s and 40mm target thickness, the BAD mass initially rose and then to drop off, as well as the quantity of BAD increased over inclination angle increasing from 0° to 60°.According to the results with 0° inclination angle and 40mm target thickness, the quantity of BAD also increased and the mass generally decreased as EFP velocity increasing from 1.2km/s to 2.6km/s. Verifications were conducted by using EFP penetrating into the 40mm thickness target with varying inclination angles. The simulation results correlate with the experimental results reasonably well.

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Section: Introductionmentioning

confidence: 99%

Research on mass distribution characteristics of the behind armor debris of the EFP penetrating target

Huang

et al. 2023

J. Phys.: Conf. Ser.

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“…[1][2][3][4][5][6] The researchers mainly focus on the following concerns (i) to develop material or to make lighter structure, which occupies less space but provides more protection, 7 (ii) to develop features for reducing the cone angle of scattering particles which occurs behind the armor, 8 or (iii) to comparatively study the experimental and numerical models. 9,10 However, performing ballistic tests, determining the standards and producing a liner to limit the spall distribution are over costing researches. Therefore, some of the researches that are conducted on this issue have focused on the production of more economic structures i.e.…”

Section: Introductionmentioning

confidence: 99%

Experimental study on spall behavior of single and multi-plate composites behind armor subjected to shaped charge

Toksoy¹,

Arıkan

Karakuzu

et al. 2020

Journal of Composite Materials

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Spall behavior of single and multi-layered hybrid composite structures behind armor was investigated by using shaped charge. Firstly, spall cone angles of Aluminum 5083-H116 and rolled homogeneous armor (RHA) steel as base armor materials were determined without any composite to select base armor. The single and multi-plates composite samples were produced by using S2 glass plain fabric, Kevlar plain fabric and hybrid Carbon-Kevlar twill fabric and epoxy resin system. After that, composite samples were placed behind the selected base armor plates with different distance in between them. The changes of spall cone angle, spall diameter, and penetrated area after shaped charge penetration were determined and analyzed in terms of both material configuration and distance behind the armor plates. As a result, increasing the behind armor distance reduces the jetting area and thus spall distribution decreases. In addition, it can be recommended to use hybrid 1 and 50 mm behind armor distance by evaluating both spall distribution and in-vehicle volume restriction.

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Energy Spatial Distribution of Behind-Armor Debris Generated by Penetration of Explosively Formed Projectiles with Different Length–Diameter Ratio

Huang

et al. 2023

Applied Sciences

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To understand the influence of the length–diameter ratio (L/D) of explosively formed projectiles (EFPs) on the energy spatial distribution of behind-armor debris (BAD), three EFPs with different L/Ds were designed in this study. The scattering characteristics of the BAD formed by the EFP penetrating a steel target were investigated. High-speed photography was used to observe the shape of the BAD cloud. Fiber and foam plates were sequentially stacked to recover the fragments. The three-dimensional damaged area by the BAD was obtained based on the spatial position information of a large amount of BAD. Finally, the energy spatial distribution characteristics of the EFP and target material fragments were analyzed. The results showed that a large EFP L/D increased the total energy of the BAD, and the proportion of the energy of projectile fragments increased. The difference in the energy spatial distribution between EFPs with varying L/Ds was mainly in the scattering angle range of 3–17°. The total energy of fragments within 17° of scattering angle accounted for 85% of the total energy of all fragments. The BAD energy of the EFP with a large L/D (L/D = 3.86) was concentrated in a small scattering angle range in which the residual projectile was located. The average projectile fragment energy of the EFP with a moderate L/D (L/D = 2.4) was evenly distributed in the scattering angle range of 5–20°. As a result, the energy distribution of the BAD from EFP (L/D = 2.4) shifted towards the large scattering angle, thus leading to a uniform radial distribution of the striking area within the range of 500–1100 mm behind the target. However, with the increase in the distance behind the target, the radial direction of the striking area of the other two EFPs was gradually reduced. The reason was explained according to the force analysis of the fragments resulting from the bulge fracture of target. The spatial energy distribution of BAD is closely related to the damage ability of EFP in relation to the armored target. Thus, it is necessary to design EFPs with appropriate L/Ds in order to maximize the damaging effect behind the armor.

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Metallic witness packs for behind-armour debris characterisation

Cited by 3 publications

References 0 publications

Research on mass distribution characteristics of the behind armor debris of the EFP penetrating target

Research on mass distribution characteristics of the behind armor debris of the EFP penetrating target

Experimental study on spall behavior of single and multi-plate composites behind armor subjected to shaped charge

Energy Spatial Distribution of Behind-Armor Debris Generated by Penetration of Explosively Formed Projectiles with Different Length–Diameter Ratio

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