SAE Standard Fatigue Data File format

#SAE Standard Fatigue Data File format #
Pick one: #FDE_plot #FDE_fit # #
#
# Fitted Curve !
# SAE86B20 Simulated Carburized Core Q+T Rc=36 100%Martensite ?
# Material cyclically softens substantially.
# ElecFurnace, ConCast(184.2mm billet), HotRolled to 53.2mm bar.
# Inclusions: TypeABC=none obsv.  TypeD=3.5Thin'
# ASTM Grain size: 7 to 8,
# Test: UoToledo, F.Yin and A.Fatemi Apr.2005
# saedigcurve_v2.2.f starts.
#FileType= strain_life
#DataType= fitted
#Name= SAE86B20
#Name= AisiIt_74
#Stress_units= MPa
#Strain_units= strain
#Sy= 989.0
#Su= 1034.1
#E= 205600 avg. of 18 obsv.  Initial report=204500
#monotonic_K= 1213.0
#monotonic_n= 0.037
#LowerYield= 980.1
#UpperYield= 995.9
#FractureStrain= 1.013
#FractureStress= 2447 ?     Engr. is  900  check.
#%RA= 63.7
#MaterialForm= bar
#FailureDef= 50% load drop
#Hardness, Rockwell C= 36
#BHN= 336
#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   AisiIt_74  BHN=  336 Fn=    0
#          Monotonic Props.       Cyclic Props.
#ELAS. MOD.= 29820. KSI,  206. GPA     K'        = 171.0 KSI,  1179.MPA
#YIELD,0.2%=   143. KSI,  989. MPA     N'        = 0.0770
#ULT. STRG.=   150. KSI, 1034. MPA     F. STRG COEF=  185.3 KSI, 1278.MPA
#K       =      0.0 KSI,      0. MPA   F.STRG EXP, b=-0.0642
#N            = 0.0000                 FAT DUCT COEF=   2.8344
#RED. IN AREA = 63.7                   F.DUCT EXP, c=-0.8331
#T. FRAC. STG.= 354.9 KSI, 2447. MPA   Exp Cyc Yld  =  106. Ksi, 731.MPA
#T. FRAC. STR.= 1.013                  Fit Cyc Yld  =  106. Ksi, 729.MPA
#No. fatigue data points=   18
#
# NOTE!! The Following Points are <b>FITTED DATA:</b>#NOTE!! Fitted Stress computed using Experm. K' and n'
#Stress_Units= MPa
# Total Strain   2Nf  Stress  Mean   Plastic Strain   Initial
#    Amp               Amp   Stress      Amp        Elastic Mod.
   2.84057          1  1205.5      0.   2.83471    205600. #Fitted_point
   0.02016        500   842.5      0.   0.01606    205600. #Fitted_point
   0.01296       1000   809.5      0.   0.00903    205600. #Fitted_point
   0.00885       2000   777.8      0.   0.00507    205600. #Fitted_point
   0.00595       5000   737.7      0.   0.00236    205600. #Fitted_point
   0.00476      10000   708.4      0.   0.00131    205600. #Fitted_point
   0.00403      20000   679.8      0.   0.00072    205600. #Fitted_point
   0.00345      50000   642.7      0.   0.00032    205600. #Fitted_point
   0.00316     100000   615.0      0.   0.00017    205600. #Fitted_point
   0.00295     200000   587.8      0.   0.00009    205600. #Fitted_point
   0.00273     500000   553.2      0.   0.00004    205600. #Fitted_point
   0.00259    1000000   528.3      0.   0.00002    205600. #Fitted_point
   0.00246    2000000   504.8      0.   0.00001    205600. #Fitted_point
   0.00232    5000000   475.4      0.   0.00000    205600. #Fitted_point
   0.00221   10000000   454.5      0.   0.00000    205600. #Fitted_point
   0.00221   11000000   454.5      0.   0.00000    205600. #Fitted_point manually
#
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