The program Crack Growth applies ( 5b) to calculate the elapsed time it takes for a crack to grow between initial and final user -specified sizes.

The user must incorporate the necessary elastic and plastic configuration factors into the Pascal source code, so the compiled program is not available for downloading.

A dialogue appears below :

************                                Component life
CRACK GROWTH                                from a modified
************                                Paris equation
Title :             Example from Fracture Mechanics Notes
Enter, for the material -
     yield strength            :  1400      Note consistent MPa, m units
     plane strain toughness    :  50
     Paris index               :  4.4
     reference growth rate     :  0         Default  1 mm/Mc
     corresponding K-range     :  5.7
and, for the configuration -
     component reference width :  0.010
     cyclic stress limits      :  150  250
         so, critical normalised size  0.629
     normalised crack limits   :  0.1   1
         so, elapsed time is      6.65E+5 cycles
End of program