fatigue crack growth curve

I implement a program for fatigue crack growth in the XFEM.

But I have great difficulties to find material parameters used for PARIS- or  FORMAN/METTU-equation.

Can anyone point me where this parameters could be released, for example for epoxy, polyurethane, 18CrNiMo7-6 and Aluminium.

I would very appriciate your response.

-Sungyong-


Zhigang Suo's picture

Re: fatigue crack growth curve

The original paper by Paris contains some data.  Data can also be found in Suresh's textbook.