#Copyright (C) 2012 F.D.E. Committee #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 # # SAE 950X HSLA-345 machined from 5/16inch plate channels. # specimens were initially overstrained 10 cycles +-1.0% strain # (as tabulated below) # Ref.: P.Watson and T.H.Topper, "An Evaluation of the Fatigue Performance # of Automotive Steels," SAE Paper 710597, Montreal Que., Jun.7-11 1971 # Data digitized from graphs and may contain errors. # Due to plasticity at long life, the traditional fit has a problem. # #FileType= strain_life #DataType= raw #TIMEcol= 0 #NAME= SAE950X #NAME= HSLA-345 #NAME= Steel #Stress_units= mpa #Strain_units= strain #Sy= 345. 0.2pc offset = 50 ksi #Su= 441. #eu= 0.14 (engineerin strain at Su ) #E= 204220. mpa =29640 ksi #FractureStrain= 1.06 #FractureStress= 751. #monotonic_K= 0 not reported #monotonic_n= 0 not reported #BHN= 140. #%RA= 65. % #StrAmpl 2Nf StsAmpl So PlasStrAmpl IniMod NeuberStressAmpl #non-initially overstrained in another file. #Initially overstrained Points: #( +-1.0% strain for 10 cycles) 0.00296 13590 310.37 0 0.00144 204220 433 0.00202 33823 254.76 0 0.00077 204220 324 0.00163 127063 220.87 0 0.00055 204220 271 0.00133 990656 208.84 0 0.00031 204220 238 0.00123 2612300 202.25 0 0.00024 204220 225 0.00114 19364400 173.29 0 0.00029 204220 201 #runout # #