Figure 2

Particle displacement. (a) Initial position of the rotary test, (b) final position of the rotary test, (c) schematic representation of the initial position, (d) schematic representation of the displacement.
Particle displacement. (a) Initial position of the rotary test, (b) final position of the rotary test, (c) schematic representation of the initial position, (d) schematic representation of the displacement.