Non$-$linear load$-$deflection diagrams at constant crack areas for double ended DCB specimens under the eccentric load were fitted by:

$F=250*(\frac{u}{A})+2600*(\frac{u^3}{A^2})$

where $F$ is the applied load in $N,u$ is the displacement in $mm$ and $A$ is the crack area in $m{m}^2.$ A fracture test was performed using a specimen with the thickness of $2$ mm and containing a crack with the length of $25$ mm $.$ It was observed that fracture started when the displacement of $5$ mm was obtained under the load of approximately $106$ N $.$ Estimate the fracture load for the specimen with the initial crack length of $35$ mm $.$