# #Copyright (C) 2011 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 !! # NOTE: Original test data does not extend beyond 2Nf=10000 half cycles. !! # AA 2017A-T4 from 32mm diam. Bar. # Diametral Strain hourglass test specimens. 10mm diam. 50mm Radius # 3.97Cu wt% .36Zn .75Mg .54Si .30Fe .59Mn .028Ti .007Cr # Ref.: G.Ramusat and G.Vidal, "Fatigue oligocyclique de six alliages # d'aluminium en efforts et en deformations imposes," Memoires Scientifiques # Revue Metallurgie, Jan. 1979. pg23-36. # Original Data digitized from graph and may contain slight errors. # #FileType= strain_life #DataType= fitted #TIMEcol= 0 #NAME= AA2017A-T4 #NAME= Aluminum #Stress_units= mpa #Strain_units= strain #Sy= 305. 0.2pc offset #Su= 441. #eu= 0 #strain at Su not reported #E= 73390. #FractureStrain= 0.41 #FractureStress= 644 #monotonic_K= 0 not reported #monotonic_n= 0 not reported #BHN= 0. not reported #%RA= 44.7 % #saedigcurve_v2.2.f starts. #NOTE!! The Following Points are <b>FITTED DATA:</b>#NOTE!! Fitted Stress computed using Experm. K' and n' #NOTE!! Test data points have been used below because the traditional Coffin-Manson #fit does not work well in the short life region. # #StrAmpl 2Nf StsAmpl So PlasStrAmpl IniMod NeuberStressAmpl .41 1 644 0 .40 73390 #Fitted_point monotonic 0.02257 186 473 0 0.01629 73390 #test data point 0.01375 600 459 0 0.00726 73390 #test data point 0.00778 2000 437.3 0. 0.00182 73390. #Fitted_point 0.00616 5000 410.6 0. 0.00056 73390. #Fitted_point 0.00554 10000 390.6 0. 0.00022 73390. #Fitted_point #points below are extrapolation of elasticStrain-life line: 0.00514 20000 371.1 0. 0.00008 73390. #Fitted_point 0.00475 50000 347.0 0. 0.00002 73390. #Fitted_point 0.00451 100000 330.1 0. 0.00001 73390. #Fitted_point #