2.2.4 Particle form
The literature contains a whole series of suggestions
for characterising the particle form (Saad et al., 2011).
For the following examinations, the ratio of particle
length a to particle width b was selected as form factor FF
(elongation). As 60 particles were measured for each
sample, the central value FF50;0, the modal value FFh and
the standard deviation σζFF could be taken from this as
distribution parameters of a logarithmic normal
distribution.
tan