SAE Standard Fatigue Data File format

#SAE Standard Fatigue Data File format #
Pick one: #FDE_plot #FDE_fit # #
#
# Fitted Curve.
# SAE4140 Rc=49.5 Source: ElecFurnace ConCast, Normalized 1650F
# Forged at 2150F reduced 83%, Quenched from 1550F in 150F oil
# Tempered 500F, 100%Martensite, Inclu.: TypeA 0.5Thin, TypeD 1.0Heavy
# Test: UoToledo
# saedigcurve_v2.2.f starts.
#FileType= strain_life
#DataType= fitted
#Name= SAE4140
#Name= AisiIt_76
#Stress_units= MPa
#Strain_units= strain
#Sy= 1669.2
#Su= 1924.3
#E= 206000 (avg. of 10) Reported was: 213000
#monotonic_K= 2625.9
#monotonic_n= 0.071
#FractureStrain= 0.163
#FractureStress= 1859.
#%RA= 15.7
#MaterialForm= bar
#FailureDef= 50% load drop
#BHN= 477
#Hardness, Rockwell C= 49.5
#Basic Oxygen= False
#Electric Furnace= True
#Vacuum Degas= False
#Ladle Refined= False
#Ingot Cast= False
#Continuous Cast= True
#Martensite, %= 100
#Carbon, %= 0.41
#Manganese, %= 0.94
#Phosphorus, %= 0.01
#Sulfur, %= 0.012
#Silicon, %= 0.28
#Copper, %= 0.17
#Nickel, %= 0.15
#Chromium, %= 1.01
#Molybdenum, %= 0.22
#Aluminum, %= 0.028
#Tin, %= 0.010
#Nitrogen, ppm= 94
# SAE4140    AisiIt_76  BHN=  477 Fn=    0
#          Monotonic Props.       Cyclic Props.
#ELAS. MOD.= 29878. KSI,  206. GPA     K'        = 444.8 KSI,  3067.MPA
#YIELD,0.2%=   242. KSI, 1669. MPA     N'        = 0.1364
#ULT. STRG.=   279. KSI, 1924. MPA     F. STRG COEF=  356.9 KSI, 2461.MPA
#K       =      0.0 KSI,      0. MPA   F.STRG EXP, b=-0.0949
#N            = 0.0000                 FAT DUCT COEF=   0.1992
#RED. IN AREA = 15.7                   F.DUCT EXP, c=-0.6952
#T. FRAC. STG.= 269.6 KSI, 1859. MPA   Exp Cyc Yld  =  191. Ksi,1314.MPA
#T. FRAC. STR.= 0.163                  Fit Cyc Yld  =  203. Ksi,1402.MPA
#No. fatigue data points=   20
#
# NOTE!! The Following Points are <b>FITTED DATA:</b>#NOTE!! Fitted Stress computed using Experm. K' and n'
# NOTE!! Tensile and fatigue limits adjusted manually. FAC Ju09
#Stress_Units= MPa
# Total Strain   2Nf  Stress  Mean   Plastic Strain   Initial
#    Amp               Amp   Stress      Amp        Elastic Mod.
    .163            1  1859        0.    .154      206000. #Fitted_point manually
   0.02137         50  1712.7      0.   0.01305    206000. #Fitted_point
   0.01582        100  1624.2      0.   0.00794    206000. #Fitted_point
   0.01223        200  1538.1      0.   0.00477    206000. #Fitted_point
   0.00927        500  1426.2      0.   0.00235    206000. #Fitted_point
   0.00784       1000  1341.7      0.   0.00133    206000. #Fitted_point
   0.00682       2000  1256.7      0.   0.00072    206000. #Fitted_point
   0.00586       5000  1145.1      0.   0.00030    206000. #Fitted_point
   0.00532      10000  1064.0      0.   0.00015    206000. #Fitted_point
   0.00487      20000   988.2      0.   0.00008    206000. #Fitted_point
0.0039    63502 804 0.0 0.00000 0000 #Fitted_point IGL
0.0033   200000 679  .0  .0     0    #Fitted_point manually
0.0033 10000000 679  .0  .0     0    #Fitted_point manually
#
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