# Topper, T.H., D.L.DuQuesnay, M.A.Pompetzki, "Crack Closure, Damage, and Short 
# Crack Growth under Variable Amplitude Loading,"  EMAS Conf. on Theory, 
# Concepts and Num. Analysis of Fatigue, Warley, UK, 1993, pp.201-236.
#Note: data digitized from graphs and may contain errors.

#Conversions:
## 1 ksi*sqrt(inch) = 1.0989*MPa*sqrt(m)
## 1 MPa*sqrt(m)  =   31.6228*N/(mm**(3/2) )
## 1 MPa*sqrt(mm) =         1 N/(mm**(3/2) )
#All inputs converted to    MPa*sqrt(mm)   and  mm/cycle
#Note that this is same as  N/(mm**(3/2))  and  mm/cycle
#deltaKunits=  mpa_mm
#dadnUnits= mm

#MPa*sqrt(mm)  mm/Cycle
209.1  2.54888e-08
218.4  3.75494e-07
226.2  1.40996e-07
234.4  1.94486e-07
263.0  1.19176e-06
290.6  1.35936e-06
359.9  2.90731e-06
519.6  5.14175e-06
614.6  6.49678e-06
657.7  8.20891e-06
689.5  8.96151e-06
786.1  1.11588e-05