SAE Standard Fatigue Data File format

#SAE Standard Fatigue Data File format #
Pick one: #FDE_plot #FDE_fit # #
#
# Fitted Curve.
# SAE4140 Rc=38, Q+T, 100%Martensite
# ElecFurn, LadleRefined, IngotCast, HotRolled 57mm bar,
# Specimens Q+Temp.  Type D inclus.= 1.0
# Test: UoWaterloo
# saedigcurve_v2.2.f starts.
#FileType= strain_life
#DataType= fitted
#Name= SAE4140
#Name= AisiIt_68
#Stress_units= MPa
#Strain_units= strain
#Sy= 1255.1
#Su= 1355.1
#E= 199000
#monotonic_K= 1610.4
#monotonic_n= 0.040
#FractureStrain= 0.50
#FractureStress= 1333.
#%RA= 38.8
#MaterialForm= bar
#FailureDef= 50% load drop
#Hardness, Rockwell C= 38
#BHN= 353
#Basic Oxygen= False
#Electric Furnace= True
#Vacuum Degas= False
#Ladle Refined= True
#Ingot Cast= True
#Continuous Cast= False
#Martensite, %= 100
#Carbon, %= 0.41
#Manganese, %= 0.96
#Phosphorus, %= 0.009
#Sulfur, %= 0.009
#Silicon, %= 0.23
#Copper, %= 0.20
#Nickel, %= 0.16
#Chromium, %= 0.99
#Molybdenum, %= 0.2
#Vanadium, %= 0.00
#Columbium/Niobium, %= 0.00
#Aluminum, %= 0.031
#Lead, %= 0.007
#Titanium, %= 0.003
#Calcium, %= 0.00
#Cobalt, %= 0.001
#Zirconium, %= 0.001
#Boron, %= 0.0004
#Tin, %= 0.009
#Nitrogen, ppm= 103
# SAE4140    AisiIt_68  BHN=  353 Fn=    0
#          Monotonic Props.       Cyclic Props.
#ELAS. MOD.= 28863. KSI,  199. GPA     K'        = 152.8 KSI,  1054.MPA
#YIELD,0.2%=   182. KSI, 1255. MPA     N'        = 0.0392
#ULT. STRG.=   197. KSI, 1355. MPA     F. STRG COEF=  159.6 KSI, 1100.MPA
#K       =      0.0 KSI,      0. MPA   F.STRG EXP, b=-0.0327
#N            = 0.0000                 FAT DUCT COEF=   3.0213
#RED. IN AREA = 38.8                   F.DUCT EXP, c=-0.8351
#T. FRAC. STG.= 193.3 KSI, 1333. MPA   Exp Cyc Yld  =  120. Ksi, 826.MPA
#T. FRAC. STR.= 0.500                  Fit Cyc Yld  =  119. Ksi, 818.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!! Manually 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.
    .50             1  1333        0.    .4933     199000. #Fitted_point manually
   0.00960       2000   851.3      0.   0.00532    199000. #Fitted_point
   0.00664       5000   825.1      0.   0.00250    199000. #Fitted_point
   0.00547      10000   806.0      0.   0.00142    199000. #Fitted_point
   0.00477      20000   787.7      0.   0.00081    199000. #Fitted_point
   0.00424      50000   764.7      0.   0.00040    199000. #Fitted_point
   0.00399     100000   748.2      0.   0.00023    199000. #Fitted_point
   0.00382     200000   732.5      0.   0.00014    199000. #Fitted_point
   0.00365     500000   712.4      0.   0.00007    199000. #Fitted_point
   0.00355    1000000   697.4      0.   0.00004    199000. #Fitted_point
   0.00346    2000000   682.6      0.   0.00003    199000. #Fitted_point
   0.00346   10000000   682.6      0.   0.00003    199000. #Fitted_point manually
#
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