#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, Three Anneals Su=759mpa 229BHN
# Chem.: wt% 0.10C 1.29Mn .66Si .065Al .012Nb
# Hot Rolled to 3.8mm from ingots, machined to 3.3mm thick
# Quenched in brine from 970C, to obtain 100%martensite, then
# 3 anneales 10min at 770C, final brine quench for 21% martensite: 
# chains along the ferrite grain boundaries.
# 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= 3xAnneled
#Stress_units= mpa
#Strain_units= strain

#Sy=   396 mpa 
#Su=   759 mpa  110 ksi
#eu=   0.145   #Engr. strain at Su
#E=   204000. Estimated from stress and elas.Strain.
#%RA=    0. %  Not reported
#%Elongation= 31.2 % 
#TrueFractureStress= 0  Not reported
#TrueFractureStrain= 0  Not reported
#BHN=  229  #converted from Su.=110ksi

#StrAmpl 2Nf StsAmpl So PlsStrAmpl  Emod
0.00998    1233  546  0  0.00651  204000
0.00783    1472  530  0  0.00473  204000
0.00695    3913  500  0  0.00422  204000
0.00591    6675  477  0  0.00319  204000
0.00490   13530  438  0  0.00156  204000
0.00392   13956  400  0  0.00243  204000
0.00293   38418  382  0  0.00103  204000
0.00237  111510  367  0  0.00068  204000
0.00215  154620  339  0  0.00044  204000
0.00188  245710  329  0  0.00016  204000
#