SAE Standard Fatigue Data File format

#SAE Standard Fatigue Data File format #
Pick one: #FDE_plot #FDE_fit # #
#
# Fitted Curve.
# SAE4140 HRc=42 Q+T, Source: ConCast ColdSized 32mm bar,Elec. Furnace
# Inclusions: TypeD(globular)= 1.5,  100% Martensite.
# Test: UWaterloo
# saedigcurve_v2.2.f starts.
#FileType= strain_life
#DataType= fitted
#Name= SAE4140
#Name= AisiIt_66
#Stress_units= MPa
#Strain_units= strain
#Sy= 1330.0
#Su= 1537.0
#E= 204000
#monotonic_K= 2188.0
#monotonic_n= 0.080
#FractureStrain= .60
#FractureStress= 1705.
#%RA= 42.1
#MaterialForm= bar
#FailureDef= 50% load drop
#Hardness, Rockwell C= 42
#BHN= 390
#Basic Oxygen= False
#Electric Furnace= True
#Vacuum Degas= False
#Ladle Refined= False
#Ingot Cast= False
#Continuous Cast= True
#Martensite, %= 100
#Carbon, %= 0.42
#Manganese, %= 0.83
#Phosphorus, %= 0.011
#Sulfur, %= 0.021
#Silicon, %= 0.24
#Copper, %= 0.13
#Nickel, %= 0.25
#Chromium, %= 0.88
#Molybdenum, %= 0.19
#Vanadium, %= 0.00
#Columbium/Niobium, %= 0.01
#Aluminum, %= 0.024
#Calcium, %= 0.00
#Tin, %= 0.010
#Nitrogen, ppm= 90
# SAE4140    AisiIt_66  BHN=  390 Fn=    0
#          Monotonic Props.       Cyclic Props.
#ELAS. MOD.= 29588. KSI,  204. GPA     K'        = 212.5 KSI,  1465.MPA
#YIELD,0.2%=   193. KSI, 1330. MPA     N'        = 0.0769
#ULT. STRG.=   223. KSI, 1537. MPA     F. STRG COEF=  208.5 KSI, 1438.MPA
#K       =      0.0 KSI,      0. MPA   F.STRG EXP, b=-0.0511
#N            = 0.0000                 FAT DUCT COEF=   0.7829
#RED. IN AREA = 42.1                   F.DUCT EXP, c=-0.6640
#T. FRAC. STG.= 247.3 KSI, 1705. MPA   Exp Cyc Yld  =  132. Ksi, 908.MPA
#T. FRAC. STR.= 0.600                  Fit Cyc Yld  =  130. Ksi, 895.MPA
#No. fatigue data points=   19
#
# NOTE!! The Following Points are <b>FITTED DATA:</b>#NOTE!! Fitted Stress computed using Experm. K' and n'
# NOTE!! Manual fit near Nf=1 and fatigue limit. FAC Jun09
#Stress_Units= MPa
# Total Strain   2Nf  Stress  Mean   Plastic Strain   Initial
#    Amp               Amp   Stress      Amp        Elastic Mod.
    .60             1  1705        0.   0.592      204000. #Fitted_point manually
   0.00981       2000   974.4      0.   0.00504    204000. #Fitted_point
   0.00730       5000   922.3      0.   0.00278    204000. #Fitted_point
   0.00613      10000   885.5      0.   0.00179    204000. #Fitted_point
   0.00534      20000   851.2      0.   0.00117    204000. #Fitted_point
   0.00465      50000   809.6      0.   0.00068    204000. #Fitted_point
   0.00429     100000   780.9      0.   0.00046    204000. #Fitted_point
   0.00401     200000   754.3      0.   0.00032    204000. #Fitted_point
   0.00373     500000   721.6      0.   0.00020    204000. #Fitted_point
   0.00356    1000000   698.3      0.   0.00014    204000. #Fitted_point
0.0035  2000000 692 0.0 0.00000 204000 #Fitted_point manually
0.0035 10000000 692 0.0 0.00000 204000 #Fitted_point manually
#
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