SAE Standard Fatigue Data File format

#SAE Standard Fatigue Data File format #
Pick one: #FDE_plot #FDE_fit # #
#
# Fitted Curve.
# SAE4140 Rc=41.7 Source: ElecFurnace ConCast HRbar 29.8mm
# Induction Hardened samples.  10%Bainite 90%Martensite
# Inclusions: TypeA=1.5Thin TypeD=1.5Thin
# Test: UoToledo
# saedigcurve_v2.2.f starts.
#FileType= strain_life
#DataType= fitted
#Name= SAE4140
#Name= AisiIt_96
#Stress_units= MPa
#Strain_units= strain
#Sy= 1157.5
#Su= 1247.8
#E= 208000. (average) #Reported as 202500
#monotonic_K= 1498.5
#monotonic_n= 0.044
#FractureStrain= 0.646
#FractureStress= 1311.
#%RA= 47.5
#MaterialForm= bar
#FailureDef= 50% load drop
#BHN= 388  #Original reported as BHN= 409.3 (wrong?)
#Hardness, Rockwell C= 41.7
#Basic Oxygen= False
#Electric Furnace= True
#Vacuum Degas= False
#Ladle Refined= False
#Ingot Cast= False
#Continuous Cast= True
#Bainite, %= 10
#Martensite, %= 90
#Carbon, %= 0.41
#Manganese, %= 0.92
#Phosphorus, %= 0.013
#Sulfur, %= 0.015
#Silicon, %= 0.28
#Copper, %= 0.20
#Nickel, %= 0.15
#Chromium, %= 1
#Molybdenum, %= 0.22
#Vanadium, %= 0.01
#Aluminum, %= 0.037
# SAE4140    AisiIt_96  BHN=  388 Fn=    0
#          Monotonic Props.       Cyclic Props.
#ELAS. MOD.= 30168. KSI,  208. GPA     K'        = 239.7 KSI,  1653.MPA
#YIELD,0.2%=   168. KSI, 1158. MPA     N'        = 0.0997
#ULT. STRG.=   181. KSI, 1248. MPA     F. STRG COEF=  237.5 KSI, 1638.MPA
#K       =      0.0 KSI,      0. MPA   F.STRG EXP, b=-0.0677
#N            = 0.0000                 FAT DUCT COEF=   0.9123
#RED. IN AREA = 47.5                   F.DUCT EXP, c=-0.6791
#T. FRAC. STG.= 190.1 KSI, 1311. MPA   Exp Cyc Yld  =  129. Ksi, 889.MPA
#T. FRAC. STR.= 0.646                  Fit Cyc Yld  =  124. Ksi, 856.MPA
#No. fatigue data points=   18
#
# NOTE!! The Following Points are <b>FITTED DATA:</b>#NOTE!! Fitted Stress computed using Experm. K' and n'
# NOTE!! Tensile added and Fatigue limit adjusted.  FAC Jun09
#Stress_Units= MPa
# Total Strain   2Nf  Stress  Mean   Plastic Strain   Initial
#    Amp               Amp   Stress      Amp        Elastic Mod.
    .646            1  1311        0.    .640      208000. #Fitted_point manually
    .0200         380  1065        0.   0.01454    208000. #Fitted_point manually
   0.01857        500  1055.9      0.   0.01350    208000. #Fitted_point
   0.01330       1000  1003.3      0.   0.00848    208000. #Fitted_point
   0.00993       2000   953.7      0.   0.00535    208000. #Fitted_point
   0.00723       5000   892.9      0.   0.00294    208000. #Fitted_point
   0.00597      10000   850.4      0.   0.00188    208000. #Fitted_point
   0.00512      20000   810.9      0.   0.00122    208000. #Fitted_point
   0.00437      50000   763.0      0.   0.00070    208000. #Fitted_point
   0.00398     100000   729.7      0.   0.00047    208000. #Fitted_point
   0.00367     200000   698.6      0.   0.00031    208000. #Fitted_point
   0.00336     500000   659.9      0.   0.00019    208000. #Fitted_point
   0.00317    1000000   640        0.   0.00013    208000. #Fitted_point manually
    .0030     2000000   621        0.0  0.00000    208000. #Fitted_point manually
    .0030    10000000   621        0.0  0.00000    208000. #Fitted_point manually
#
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