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2015
Journal Article
Titel
Scale-independent description of the rigid-body penetration of spherical projectiles into semi-infinite adobe targets
Abstract
In impact experiments, the penetration depth of spherical projectiles into semi-infinite adobe targets has been investigated. In total, 20 tests were performed with steel projectiles of diameters 7.5, 10.0 and 13.5 mm in the velocity regime from 240 to 3230 m/s. In addition, 2 single experiments with aluminum and titanium projectiles were conducted at impact velocities of 830 and 920 m/s, respectively. After an appropriate normalization, all penetration depth vs. velocity data up to impact velocities of around 1500 m/s can be described by one linear curve. This is the velocity regime where projectile fragmentation does not yet occur. The observed linear relation is discussed in the context of a recently published analytical model and shows the scalability of penetration tests also for the considered adobe target material of low strength and low density.
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