#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, Intermediate Quench Su=792mpa 237BHN
# 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
# annealed 10min at 770C, brine quench for 20% martensite finely
# dispersed in ferrite matrix.
# 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= IntermQuench
#Stress_units= mpa
#Strain_units= strain

#Sy=   471 mpa 
#Su=   792 mpa # or 115 ksi
#eu=   0.145   #Engr. strain at Su
#E=   200000.  #Estimated from stress and ElasStrai
#%RA=    0. %  Not reported
#%Elongation= 33.3 % 
#TrueFractureStress= 0  Not reported
#TrueFractureStrain= 0  Not reported
#BHN=  237  #converted from Su.=115 ksi

#StrAmpl 2Nf  StsAmpl So PlsStrAmpl Emod
0.01008    1561  575  0  0.00669  200000
0.00781    3077  519  0  0.00455  200000
0.00594    5005  458  0  0.00332  200000
0.00497    8428  464  0  0.00255  200000
0.00394   13872  416  0  0.00156  200000
0.00296   33230  378  0  0.00091  200000
0.00250   53381  372  0  0.00052  200000
0.00193  398470  316  0  0.00021  200000
#