#SAE Standard Data File format

# #SAE Standard Data File format # #

Pick one: #FDE_plot #FDE_fit # #
The FD+E standard file goes below. Use browser "VIEW Source" file to download: #

#<pre>
#Copyright (C) 2025  Fatigue Design + Evaluation Committee of the SAE
#This data file is free software; you can redistribute it and/or
#modify it under the terms of the GNU General Public License as
#published by the Free Software Foundation; either version 2 of the
#license, or (at your option) any later version.
#This data file is distributed in the hope that it will be useful,
#but WITHOUT ANY WARRANTY; without even the implied warranty of
#MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#GNU General PUblic License for more details.
#You should have received a copy of the GNU General PUblic License
#along with this program; if not, write to the Free Software
#Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
#Try also their web site: http://www.gnu.org/copyleft/gpl.html
#
# DualPhase Steel, Step Quench Su=725mpa 217BHN
# Chem.: wt% 0.10C 1.29Mn .66Si .065Al .012Nb
# Hot Rolled to 3.8mm from ingots, machined to 3.3mm thick
# Equalized 5min at 910C, slow cool to 720, then 10min at  770C
# then quenched in 6% iced brine. 21% Martinsite: continuous
# ferrite network with islands of martensite.
# Ref.: S.R.Mediratta, V.Ramaswamy, P.Rama Rao, "Influence of
# Ref.: ferrite-martensite microstructural morphology on the
# Ref.: low Cycle fatigue of a dual-phase steel",
# Ref.: Int.J.Fatigue V7 N2 1985, pp107-115.
# Data digitized from plots may contain errors.

#FileType= strain_life  #Load control! assume elastic
#DataType= raw
#TIMEcol= 0
#NAME= DualPhase
#NAME= Steel
#NAME= StepQuench
#Stress_units= mpa
#Strain_units= strain

#Sy=  386 mpa 
#Su=  725 mpa = 105ksi
#eu=  0.133   #Engr. strain at Su
#E=   204000. # estimated from Stress and Elas.Strains.
#%RA=  0. %  Not reported
#%Elongation= 25.6 % 
#TrueFractureStress= 0  Not reported
#TrueFractureStrain= 0  Not reported
#BHN=  217  #converted from Su.=105 ksi

#StrAmpl 2Nf StsAmpl So PlsStrAmpl  Emod
0.01001    849  623  0  0.00642  204000
0.00803   1528  550  0  0.00468  204000
0.00606   4186  491  0  0.00334  204000
0.00495   5505  472  0  0.00255  204000
0.00395  15068  415  0  0.00171  204000
0.00284  37150  390  0  0.00097  204000
0.00247  42044  354  0  0.00062  204000
0.00216  46866  355  0  0.00049  204000
0.00204  65673  329  0  0.00029  204000
0.00196  80169  316  0  0.00029  204000
#