SAE Standard Fatigue Data File format

#SAE Standard Fatigue Data File format #
Pick one: #FDE_plot #FDE_fit # #
#
# Fitted Data!
# SAE1070 Rc=30, Bhn=286, Induction Hardened  Aisi Iter_36
# Heat treated to simulate core of an Induction Hardened part
# BasicOxygen, LadleRefined, ConCast(310x372mm) HotRolled to 50mmBar.
# Tested as received.  69%Pearlite, 31%Ferrite,
# Inclusions: TypeA,B,C= none, TypeD=1
# Considerable scatter in two Tensile tests
# Test: UoWaterloo, M.Kalil, T.Topper. Oct.2000
# saedigcurve_v2.2.f starts.
#FileType= strain_life
#DataType= fitted
#Name= SAE1070
#Name= AisiIt_36
#Stress_units= MPa
#Strain_units= strain
#Sy= 520.0
#Su= 659.0
#E= 207000
#monotonic_K= 1485.0
#monotonic_n= 0.177
#FractureStrain= 0.459
#FractureStress= 1360 (Bridgeman corrected)
#%RA= 36.
#MaterialForm= bar
#FailureDef= 50% load drop
#BHN= 280
#Hardness, Rockwell C= 30  Ranges from Rc=26 to Rc=34
#Basic Oxygen= True
#Electric Furnace= False
#Vacuum Degas= False
#Ladle Refined= True
#Ingot Cast= False
#Continuous Cast= True
#Pearlite, %= 69
#Ferrite, %= 31
#Carbon, %= 0.7
#Manganese, %= 0.98
#Phosphorus, %= 0.014
#Sulfur, %= 0.024
#Silicon, %= 0.28
#Copper, %= 0.02
#Nickel, %= 0.01
#Chromium, %= 0.11
#Molybdenum, %= 0.05
#Aluminum, %= 0.031
#Nitrogen, ppm= 33
# SAE1070    AisiIt_36  BHN=  280 Fn=    0
#          Monotonic Props.       Cyclic Props.
#ELAS. MOD.= 30023. KSI,  207. GPA     K'        = 289.4 KSI,  1995.MPA
#YIELD,0.2%=    75. KSI,  520. MPA     N'        = 0.2311
#ULT. STRG.=    96. KSI,  659. MPA     F. STRG COEF=  232.2 KSI, 1601.MPA
#K       =      0.0 KSI,      0. MPA   F.STRG EXP, b=-0.1166
#N            = 0.0000                 FAT DUCT COEF=   0.3861
#RED. IN AREA = 36.0                   F.DUCT EXP, c=-0.5044
#T. FRAC. STG.= 197.3 KSI, 1360. MPA   Exp Cyc Yld  =   69. Ksi, 475.MPA
#T. FRAC. STR.= 0.459                  Fit Cyc Yld  =   70. Ksi, 482.MPA
#No. fatigue data points=   22
#
# NOTE!! The Following Points are <b>FITTED DATA:</b>#NOTE!! Fitted Stress computed using Experm. K' and n'
# NOTE!! Fitted short life and Fatigue limit manually.
#Stress_Units= MPa
# Total Strain   2Nf  Stress  Mean   Plastic Strain   Initial
#    Amp               Amp   Stress      Amp        Elastic Mod.
    .459            1  1360.       0.    .452      207000. #Fitted_point manually
   0.02055        500   765.2      0.   0.01685    207000. #Fitted_point
   0.01530       1000   709.3      0.   0.01187    207000. #Fitted_point
   0.01154       2000   657.4      0.   0.00836    207000. #Fitted_point
   0.00813       5000   594.4      0.   0.00525    207000. #Fitted_point
   0.00635      10000   550.6      0.   0.00369    207000. #Fitted_point
   0.00505      20000   509.9      0.   0.00259    207000. #Fitted_point
   0.00384      50000   460.3      0.   0.00161    207000. #Fitted_point
   0.00318     100000   425.7      0.   0.00113    207000. #Fitted_point
   0.00268     200000   393.4      0.   0.00078    207000. #Fitted_point
    .00228     500000   336.       0.    .00063    207000. #Fitted_point manually
    .00228   10000000   336.       0.    .00063    207000. #Fitted_point manually
#
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