Spall
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Spall consists of fragments of a material that break off a larger solid body. It can be produced by a variety of mechanisms, including as a result of projectile impact, corrosion, weathering, cavitati
Spall from the knapping of obsidian (as by Native Americans) to form arrowheads and other tools. These unique obsidians occur at Glass Buttes, Oregon.
A chunk of armour knocked from HMS New Zealand's "X" turret during the Battle of Jutland on display at the Torpedo Bay Navy Museum in Auckland. Caption reads, "The chunk of armour plating you see here was gouged out of X turret by a German shell."
Desquamation of dunite boulder
Granite dome exfoliation
Wz. 35 anti-tank rifle
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The karabin przeciwpancerny wz. 35 is a Polish 7.92 mm anti-tank rifle that was used by the Polish Armed Forces during the 1939 Polish Campaign of World War II and later by several Axis armies.
Spall
…or disable the vehicle and its crew. An early example of anti-tank weapon intentionally designed to cause spallation instead of penetration is the wz. 35 anti-tank rifle. Spalling is a common mechanism of rock weathering, and occurs at the surface of a rock when there are large shear stresses under the surface. This…
Photo of a wz. 35 in Finnish service in 1942 under designation 8 mm pst kiv/38.
Polish uhlan with wz. 35 anti-tank rifle. Military instruction published in Warsaw in 1938.
7.92mm DS antitank cartridge (left). Box (right) held 12 cartridges.
Wz. 35 anti-tank rifle