Fracturability is a parameter for brittle foods such as cereals, chips and crackers. Fracturability is given by the load force of the first significant peak.
Fracturability can be tested with a few different types of fixtures. The small metal ball is popular for chips since they are often eaten individually. For foods that are eaten in groups, a larger fixture such as a Kramer Shear Cell may need to be used.
The calculation for Fracturability is very similar to hardness and just involved taking the peak load reading of the first significant peak. In many cases, Fracturablity and Hardness can be the same value.