SAE Standard Fatigue Data File format

#SAE Standard Fatigue Data File format #
Pick one: #FDE_plot #FDE_fit # #
#
# Fitted Curve !
# SAE1038 Normalized HRb=87  AISI iter 18   Stelco
# BasicOxygen, LadleRefined, ConCast(300x600mm), Hot Rolled to 19mm bar
# Normalized 1650F. 65%Pearlite, 35%Ferrite, ASTM Grain Size 8 to 9
# Inclusions: TypeA 1.5Thin, TypeB,C,D= 0
# Test: UoToledo M.Roessle and A.Fatemi, Apr.1998
# saedigcurve_v2.2.f starts.
#
#FileType= strain_life
#DataType= fitted
#Name= SAE1038
#Name= AisiIt_18
#Name= Normalized
#Stress_units= MPa
#Strain_units= strain
#Sy= 330.7
#Su= 582.2
#E= 216400 average of 23, reported: 201000
#monotonic_K= 1105.7
#monotonic_n= 0.260
#LowerYield= 327.2
#UpperYield= 346.8
#FractureStrain= 0.80
#FractureStress= 898.
#%RA= 54
#MaterialForm= bar
#FailureDef= 50% load drop
#BHN= 163
#Hardness, Rockwell B= 87
#Basic Oxygen= True
#Electric Furnace= False
#Vacuum Degas= False
#Ladle Refined= True
#Ingot Cast= False
#Continuous Cast= True
#Pearlite, %= 65
#Ferrite, %= 35
#ASTM Grain Size No. (Min to Max)= 8 to 9
#Carbon, %= 0.4
#Manganese, %= 0.8
#Phosphorus, %= 0.013
#Sulfur, %= 0.024
#Silicon, %= 0.28
#Copper, %= 0.03
#Nickel, %= 0.01
#Chromium, %= 0.04
#Molybdenum, %= 0.01
#Vanadium, %= 0.00
#Columbium/Niobium, %= 0.00
#Aluminum, %= 0.030
# SAE1038    AisiIt_18  BHN=  163 Fn=    0
#          Monotonic Props.       Cyclic Props.
#ELAS. MOD.= 31386. KSI,  216. GPA     K'        = 206.4 KSI,  1423.MPA
#YIELD,0.2%=    48. KSI,  331. MPA     N'        = 0.2179
#ULT. STRG.=    84. KSI,  582. MPA     F. STRG COEF=  157.6 KSI, 1087.MPA
#K       =      0.0 KSI,      0. MPA   F.STRG EXP, b=-0.1035
#N            = 0.0000                 FAT DUCT COEF=   0.2907
#RED. IN AREA = 54.0                   F.DUCT EXP, c=-0.4749
#T. FRAC. STG.= 130.2 KSI,  898. MPA   Exp Cyc Yld  =   53. Ksi, 367.MPA
#T. FRAC. STR.= 0.800                  Fit Cyc Yld  =   51. Ksi, 348.MPA
#No. fatigue data points=   22
#
# 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.
    .80             1   898.       0.    .795      216400. #Fitted_point manually
   0.01783        500   523.8      0.   0.01541    216400. #Fitted_point
   0.01339       1000   490.7      0.   0.01112    216400. #Fitted_point
   0.01015       2000   459.7      0.   0.00803    216400. #Fitted_point
   0.00717       5000   421.8      0.   0.00522    216400. #Fitted_point
   0.00560      10000   395.3      0.   0.00377    216400. #Fitted_point
    .0035       40000   338        0.    .00181    216400. #Fitted_point manually
    .0020      350000   266        0     .00068    216400. #Fitted_point manually
    .0015     2000000   242        0.    .0003    216400. #Fitted_point manually
    .0015    10000000   242        0.    .0003    216400. #Fitted_point manually
#
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