Scaling laws for size distribution of fragments resulting from hypervelocity impacts of aluminum alloy spherical projectiles on thick aluminum alloy targets: Effects of impact velocity and projectile diameter

Nishida, Masahiro; Hiraiwa, Yasuyuki; Hayashi, Koichi; Hasegawa, Susumu

doi:10.1016/j.ijimpeng.2017.08.005

Cited by 15 publications

(1 citation statement)

References 25 publications

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“…Figure 12 shows the cumulative distribution of fragments depending on the fragment's mass, m. Figure 13 presents the normalization of the vertical axis of Figure 12. According to the processing method of Nishida et al [9], when the vertical axis was divided by the impact velocity (km/s) raised to the power 1.5, all the results at five impact velocities lay almost on the following curve. Figure 12 shows the cumulative distribution of fragments depending on the fragment's mass, m. Figure 13 presents the normalization of the vertical axis of Figure 12.…”

Section: Resultsmentioning

confidence: 99%

Hypervelocity Impact Cratering on Semi-Infinite Concrete Targets of Projectiles with Different Length to Diameter Ratios

Zhang

Xue

et al. 2020

Applied Sciences

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Impact cratering experiments were performed on semi-infinite concrete targets with 7 mm-diameter 40CrNiMo steel long-rod projectiles at impact velocities ranging from 2117 m/s to 3086 m/s by using a two-stage combustion light-gas gun. After the impact experiments, the crater diameter and depth as well as the crater volume were carefully measured. The concrete fragments were collected from the target chamber and the fragment mass was measured. The size of the crater (including the volume, diameter, and depth) and the fragment mass increased with increasing impact velocities, while the fragment distributions at different impact velocities were almost the same. Scaling laws for the crater volume impacted by the rod-shaped projectile were discussed and an empirical formula of crater volume was determined by the experimental data from the literature. Through the verification of the present experimental results, the predictive ability of the empirical formula proved to be reliable. Scaling laws for the size distribution of concrete fragments were also discussed. The normalized fragment mass distribution was proportional to the impact velocity raised to the power 1.5.

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Section: Resultsmentioning

confidence: 99%