SAE Standard Fatigue Data File format

#SAE Standard Fatigue Data File format #
Pick one: #FDE_plot #FDE_fit # #
#
# Fitted Curve !
# SAE86B20 Simulated Carburized Core.  Rc=43  100%Martensite
# Material cyclically softens somewhat.
# ElecFurnace, ConCast(184.2mm billet), HotRolled to 53.2mm bar.  Spec. machined
# then heated in vacuum to 1800F then Quenched +tempered
# ASTM GrainSize T-T=11to 12, L-T= 10 to 11
# Inclusions: TypeA=2.5Thin, TypeBC=0 TypeD=1.5thin
# Test: UoToledo, N.Cyril and A.Fatemi June2006
# saedigcurve_v2.2.f starts.
#FileType= strain_life
#DataType= fitted
#Name= SAE86B20
#Name= SimulatedCore
#Name= AisiIt_82
#Stress_units= MPa
#Strain_units= strain
#Sy= 1198.0
#Su= 1502.0
#E= 208600 avg. or 13 obsv. Initially reported 205900.
#monotonic_K= 2192.8
#monotonic_n= 0.092
#FractureStrain= .909
#FractureStress=  3000 guestimated.  Reported value of 968. seems too low.
#%RA= 59.7
#MaterialForm= bar
#FailureDef= 50% load drop
#Hardness, Rockwell C= 43
#BHN= 401
#Basic Oxygen= False
#Electric Furnace= True
#Vacuum Degas= False
#Ladle Refined= False
#Ingot Cast= False
#Continuous Cast= True
#Martensite, %= 100
#Carbon, %= 0.19
#Manganese, %= 0.9
#Phosphorus, %= 0.018
#Sulfur, %= 0.029
#Silicon, %= 0.24
#Copper, %= 0.24
#Nickel, %= 0.36
#Chromium, %= 0.58
#Molybdenum, %= 0.2
#Aluminum, %= 0.021
#Titanium, %= 0.034
#Calcium, %= 0.00
#Boron, %= 0.002
#Tin, %= 0.010
#Oxygen, ppm= 12
#Nitrogen, ppm= 65
# SAE86B20   SimulatedC BHN=  401 Fn=    0
#          Monotonic Props.       Cyclic Props.
#ELAS. MOD.= 30255. KSI,  209. GPA     K'        = 334.8 KSI,  2308.MPA
#YIELD,0.2%=   174. KSI, 1198. MPA     N'        = 0.1213
#ULT. STRG.=   218. KSI, 1502. MPA     F. STRG COEF=  393.6 KSI, 2714.MPA
#K       =      0.0 KSI,      0. MPA   F.STRG EXP, b=-0.1114
#N            = 0.0000                 FAT DUCT COEF=   3.7970
#RED. IN AREA = 59.7                   F.DUCT EXP, c=-0.9190
#T. FRAC. STG.= 140.4 KSI,  968. MPA   Exp Cyc Yld  =  158. Ksi,1086.MPA
#T. FRAC. STR.= 0.909                  Fit Cyc Yld  =  159. Ksi,1096.MPA
#No. fatigue data points=   16
#
# NOTE!! The Following Points are <b>FITTED DATA:</b>#NOTE!! Fitted Stress computed using Experm. K' and n'
# NOTE!! Short life and fatigue limit manually fitted.  fac Aug2009
#Stress_Units= MPa
# Total Strain   2Nf  Stress  Mean   Plastic Strain   Initial
#    Amp               Amp   Stress      Amp        Elastic Mod.
    .909            1  3000.       0.    .895      208600. #Fitted_point manually
   0.01907        500  1296.9      0.   0.01285    208600. #Fitted_point
   0.01267       1000  1224.2      0.   0.00680    208600. #Fitted_point
   0.00909       2000  1154.4      0.   0.00356    208600. #Fitted_point
   0.00655       5000  1064.1      0.   0.00145    208600. #Fitted_point
   0.00546      10000   995.1      0.   0.00069    208600. #Fitted_point
   0.00474      20000   924.4      0.   0.00031    208600. #Fitted_point
   0.00408      50000   831.0      0.   0.00009    208600. #Fitted_point
   0.00370     100000   764.5      0.   0.00004    208600. #Fitted_point
   0.00339     200000   703.8      0.   0.00002    208600. #Fitted_point
   0.00304     500000   632.3      0.   0.00000    208600. #Fitted_point
   0.00280    1000000   584.0      0.   0.00000    208600. #Fitted_point
   0.00250    2000000   521.       0.   0.00000    208600. #Fitted_point manually
   0.00225    5000000   469.       0.   0.00000    208600. #Fitted_point manually
   0.00225   10000000   469.       0.   0.00000    208600. #Fitted_point manually
#
#