# #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 # # Note: Fitted Data !! # SAE 980X HSLA-550 VAN80 machined from 5/16inch plate channels. # Some specimens were initially overstrained 10 cycles +-1.0% strain # (as tabulated below) # 0.145C wt% 1.25Mn .01P .011S .38Si .06Cu .033Ni .04Cr .056Al .008Mo .12V # 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 # Original test data digitized from graphs and may contain errors. # #FileType= strain_life #DataType= fitted #TIMEcol= 0 #NAME= SAE980K #NAME= VAN80 #NAME= HSLA-550 #NAME= Steel #Stress_units= mpa #Strain_units= strain #Sy= 579. 0.2pc offset = 84 ksi #Su= 686. #eu= 0.109 #engr. strain at Su #E= 198000. mpa =28700 ksi #FractureStrain= 1.15 #FractureStress= 1220. mpa #monotonic_K= 0 not reported #monotonic_n= 0 not reported #BHN= 225. #%RA= 68. % #saedigcurve_v2.2.f starts. # #NOTE!! The Following Points are <b>FITTED DATA:</b>#NOTE!! Fitted Stress computed using Experm. K' and n' #StrAmpl 2Nf StsAmpl So PlasStrAmpl IniMod 1.15 1 1220. 0. 1.14 198000. #Fitted_point monotonic point # 1. 1 1220. 0. 1.14 198000. #byPassGnuplotError 0.0494 40 716 0 0.0458 198000. #Guesstimated 0.00979 500 697.1 0. 0.00627 198000. #Fitted_point 0.00755 1000 647.2 0. 0.00428 198000. #Fitted_point 0.00596 2000 601.0 0. 0.00292 198000. #Fitted_point 0.00453 5000 545.3 0. 0.00177 198000. #Fitted_point 0.00378 9000 506.9 0. 0.00122 198000. #manualFit 0.00322 18000 471.5 0. 0.00084 198000. #manualFit 0.00268 40000 428.9 0. 0.00052 198000. #manualFit 0.00237 80000 399.5 0. 0.00036 198000. #manualFit 0.00213 140000 372.3 0. 0.00025 198000. #manualFit 0.00187 300000 339.2 0. 0.00015 198000. #manualFit 0.00170 800000 316.3 0. 0.00011 198000. #manualFit 0.00156 2000000 294.9 0. 0.00007 198000. #Fitted_point 0.00156 10000000 294.9 0. 0.00007 198000. #Fitted_point manually #