SAE Standard Fatigue Data File format

#SAE Standard Fatigue Data File format #
Pick one: #FDE_plot #FDE_fit # #
#
# Fitted Curve !   Heavily adjusted manually to give "S" shape.
# SAE8695 without IGO, 100%Martensite, HRc= 55
# Unusual tension/compression monotonic curves.
# Cyclic stress-strain curve matches Compression test.  Tensile curve much lower.
# BasicOxygen, IngotCast, HotRolled to 25mm bar, Spec.machined then
# Received same heat treatment as "carburized" part, but no carbon rich
# atmosphere.  Inclusions: TypeABC=non obsv., TypeD=1.5Thick
# Test; UoWaterloo  M.Khalil and T.Topper, Oct2000
# saedigcurve_v2.2.f starts.
#FileType= strain_life
#DataType= fitted
#Name= SAE8695
#Name= WithoutIGO
#Name= AisiIt_40
#Stress_units= MPa
#Strain_units= strain
#Sy= 780.0
#Su= 1496.0
#E= 205000
#monotonic_K= 6500.0
#monotonic_n= 0.340
#FractureStrain= 0.014
#FractureStress= 1520
#%RA= 1.3
#MaterialForm= bar
#FailureDef= 50% load drop
#BHN= 539
#Hardness, Rockwell C= 55
#StrAmp  2Nf StsAmp  So CalcPlasStr InitialModulus
#Basic Oxygen= True
#Electric Furnace= False
#Vacuum Degas= False
#Ladle Refined= False
#Ingot Cast= True
#Continuous Cast= False
#Martensite, %= 100
#Carbon, %= 0.96
#Manganese, %= 0.86
#Phosphorus, %= 0.003
#Sulfur, %= 0.028
#Silicon, %= 0.26
#Copper, %= 0.02
#Nickel, %= 0.48
#Chromium, %= 0.52
#Molybdenum, %= 0.17
#Vanadium, %= 0.00
#Columbium/Niobium, %= 0.00
#Aluminum, %= 0.043
#Lead, %= 0.010
#Titanium, %= 0.001
#Calcium, %= 0.00
#Cobalt, %= 0.000
#Zirconium, %= 0.000
#Tin, %= 0.000
# SAE8695    WithoutIGO BHN=  539 Fn=    0
#          Monotonic Props.       Cyclic Props.
#ELAS. MOD.= 29733. KSI,  205. GPA     K'        =8853.0 KSI, 61039.MPA
#YIELD,0.2%=   113. KSI,  780. MPA     N'        = 0.4986
#ULT. STRG.=   217. KSI, 1496. MPA     F. STRG COEF=  449.3 KSI, 3098.MPA
#K       =      0.0 KSI,      0. MPA   F.STRG EXP, b=-0.1445
#N            = 0.0000                 FAT DUCT COEF=   0.0025
#RED. IN AREA =  1.3                   F.DUCT EXP, c=-0.2898
#T. FRAC. STG.= 220.5 KSI, 1520. MPA   Exp Cyc Yld  =  399. Ksi,2754.MPA
#T. FRAC. STR.= 0.014                  Fit Cyc Yld  =  286. Ksi,1975.MPA
#No. fatigue data points=   26
#
# NOTE!! The Following Points are <b>FITTED DATA:</b>#NOTE!! Fitted Stress computed using Experm. K' and n'
# NOTE!! Short and longlife fitted curve adjusted manually.  FAC Aug2009
#Stress_Units= MPa
# Total Strain   2Nf  Stress  Mean   Plastic Strain   Initial
#    Amp               Amp   Stress      Amp        Elastic Mod.
    .014            1  1900        0     .0047     205000. #Fitted_point manually
   0.010           20  1830.       0.   0.00161    205000. #Fitted_point manually
   0.00757        400  1471.7      0.   0.00039    205000. #Fitted_point manually
   0.00591       1000  1187.2      0.   0.00012    205000. #Fitted_point
   0.00532       2000  1076.0      0.   0.00007    205000. #Fitted_point
   0.00463       5000   942.0      0.   0.00003    205000. #Fitted_point
   0.00417      10000   850.7      0.   0.00002    205000. #Fitted_point
   0.00376      20000   767.9      0.   0.00001    205000. #Fitted_point
   0.00328      50000   670.3      0.   0.00001    205000. #Fitted_point
   0.00295     100000   604.8      0.   0.00000    205000. #Fitted_point
   0.00266     140000   545.8      0.   0.00000    205000. #Fitted_point manually
   0.00210     700000   430.2      0.   0.00000    205000. #Fitted_point manually
   0.00150    2000000   306.6      0.   0.00000    205000. #Fitted_point manually
   0.00150   10000000   306.6      0.   0.00000    205000. #Fitted_point manually
#
#