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A statistical model for the multiple-drop-impact erosion of brittle solids was developed. An equation for calculating the rate of erosion is given. The development is not complete since two quantities that are needed to calculate the rate of erosion with use of the equation must be assessed from experimental data. A partial test of the equation shows that it gives results that are in good agreement with experimental observation.

Liquid drop impact erosion in metals and equation for crater depth

Liquid drop impact erosion - single impact helium driven gas gun, target materials, and elastic wave theory applied to impact of rods

Theory and experiments to determine mechanism of liquid drop impact erosion on metal surfaces