Effects of the Particle Shape and Size on the Single-Particle Breakage Strength

Table 1

Particle shape parameters.

Level	Shape parameter	Formula	Basic size parameters
Describe the overall shape of the particle outline	Flatness: e; Axial coefficient: aspect; Circularity: R	Aspect = La/Lb	minimum Feret diameter; La equivalent ellipse major axis of contour projection; equivalent ellipse minor axis of contour projection; P perimeter of contour projection; A area of contour projection
Describe the angularity of particles	Convexity:		smallest circumscribed polygonal area along the grain boundary
Describe the surface microtexture of structures	Roughness:		smallest circumscribed polygon perimeter along the grain boundary