Considering two $($force$,$ traverse position$)$ points over a linear portion of the tension

test curve, using the following variables the modulus can be calculated as follows $-$

this is valid for all $4$ samples. Below are the equations with the variables defined as$...$

The flexural modulus $E$ is:

$Ef=\frac{L^{3}m}{4b{d}^3}$