# topperAA2024_R=0

# 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
86.9  7.90707e-08
88.0  4.23659e-08
90.2  1.25157e-07
90.6  1.74315e-07
91.0  2.08365e-07
92.0  2.55518e-07
93.5  3.1337e-07
95.0  3.5604e-07
99.4  3.34317e-07
115.1  8.17514e-07
115.3  4.91141e-07
119.8  6.7576e-07
125.7  1.29508e-06
130.1  8.73047e-07
133.5  1.58947e-06
147.4  1.95204e-06
164.5  3.13315e-06
182.9  2.94497e-06
198.6  3.61574e-06
200.6  5.79389e-06
238.2  6.59984e-06
251.7  7.31462e-06
285.8  9.21919e-06
326.5  9.72261e-06