SAE Standard Fatigue Data File format

#SAE Standard Fatigue Data File format #
Pick one: #FDE_plot #FDE_fit # #
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# SAE4140 InducHard to Rc38, 70%Bainite 30% Ferrite
# Original from HotRolled 57mm bar
# Test: UoWaterloo
# saedigcurve_v2.2.f starts.
#FileType= strain_life
#DataType= fitted
#Name= SAE4140
#Name= AisiIt_93
#Name= Induc.Hardened
#Stress_units= MPa
#Strain_units= strain
#Sy= 1363.0
#Su= 1514.0
#E= 201400
#monotonic_K= 1911.0
#monotonic_n= 0.055
#%RA= 48
#FractureStrain= 0.65
#FractureStress= 2071
#MaterialForm= bar
#FailureDef= 50% load drop
#Hardness, Rockwell C= 38
#BHN= 353
#StrAmp  2Nf StsAmp  So CalcPlasStr InitialModulus
#Basic Oxygen= False
#Electric Furnace= True
#Vacuum Degas= False
#Ladle Refined= False
#Ingot Cast= True
#Continuous Cast= False
#Bainite, %= 70
#Ferrite, %= 30
#Carbon, %= 0.41
#Manganese, %= 0.96
#Phosphorus, %= 0.009
#Sulfur, %= 0.009
#Silicon, %= 0.23
#Copper, %= 0.20
#Nickel, %= 0.16
#Chromium, %= 0.99
#Molybdenum, %= 0.2
#Vanadium, %= 0.00
#Columbium/Niobium, %= 0.00
#Aluminum, %= 0.031
#Lead, %= 0.001
#Titanium, %= 0.003
#Calcium, %= 0.00
#Zirconium, %= 0.001
#Boron, %= 0.0004
#Tin, %= 0.009
#Nitrogen, ppm= 130
# SAE4140    AisiIt_93  BHN=  353 Fn=    0
#          Monotonic Props.       Cyclic Props.
#ELAS. MOD.= 29211. KSI,  201. GPA     K'        = 192.0 KSI,  1324.MPA
#YIELD,0.2%=   198. KSI, 1363. MPA     N'        = 0.0582
#ULT. STRG.=   220. KSI, 1514. MPA     F. STRG COEF=  218.9 KSI, 1509.MPA
#K       =      0.0 KSI,      0. MPA   F.STRG EXP, b=-0.0553
#N            = 0.0000                 FAT DUCT COEF=   9.5592
#RED. IN AREA = 48.0                   F.DUCT EXP, c=-0.9498
#T. FRAC. STG.= 300.4 KSI, 2071. MPA   Exp Cyc Yld  =  134. Ksi, 922.MPA
#T. FRAC. STR.= 0.650                  Fit Cyc Yld  =  136. Ksi, 935.MPA
#No. fatigue data points=   24
#
# NOTE!! The Following Points are <b>FITTED DATA:</b>#NOTE!! Fitted Stress computed using Experm. K' and n'
# NOTE!! Manual fit at Nf=1 and fatigue limit. FAC Jun09
#Stress_Units= MPa
# Total Strain   2Nf  Stress  Mean   Plastic Strain   Initial
#    Amp               Amp   Stress      Amp        Elastic Mod.
   0.65             1  2071        0.    .64       201400  #Fitted_point manualy
   0.01192       2000   976.9      0.   0.00707    201400. #Fitted_point
   0.00761       5000   946.9      0.   0.00291    201400. #Fitted_point
   0.00602      10000   923.7      0.   0.00144    201400. #Fitted_point
   0.00512      20000   898.8      0.   0.00066    201400. #Fitted_point
   0.00445      50000   859.4      0.   0.00018    201400. #Fitted_point
   0.00414     100000   822.6      0.   0.00005    201400. #Fitted_point
    .0035      200000   710.       0.    .00001    201400  #Fitted_point manually
    .0027      500000   590        0.    .0        201400  #Fitted_point manually
    .0027    10000000   590        0.    .0        201400  #Fitted_point manually
#
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