# #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 # # AA 2618A-T651 from 40mm diam. bar # Diametral Strain hourglass test specimens. 10mm diam. 50mm Radius # 2.70Cu wt% .07Zn 1.70Mg .20Si 1.1Fe .03Mn .10Ti 1.1Ni # 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. # Data digitized from graph and may contain slight errors. # #FileType= strain_life #DataType= fitted #TIMEcol= 0 #NAME= 2618A-T651 #NAME= AluminumBar #Stress_units= mpa #Strain_units= strain #Sy= 437. 0.2pc offset #Su= 487. #eu= 0 #strain at Su not reported #E= 73150. #FractureStrain= 0.243 #computed from %RA #FractureStress= 567. #monotonic_K= 475. mpa #monotonic_n= 0.020 #BHN= 0. not reported #%RA= 22.0 % # saedigcurve_v2.2.f starts. #No. of original fatigue test data points= 17 # # NOTE!! The Following Points are <b>FITTED DATA:</b>#NOTE!! Fitted Stress computed using Experm. K' and n' #StrAmpl 2Nf StsAmpl So PlasStrAmpl IniMod NeuberStressAmpl 0.243 1 567. 0 0.235 73150. #Fitted_point monotonic 0.01532 500 463.2 0. 0.00898 73150. #Fitted_point 0.01056 1000 440.0 0. 0.00455 73150. #Fitted_point 0.00800 2000 417.8 0. 0.00229 73150. #Fitted_point 0.00623 5000 389.5 0. 0.00090 73150. #Fitted_point 0.00547 10000 368.4 0. 0.00043 73150. #Fitted_point 0.00495 20000 347.6 0. 0.00020 73150. #Fitted_point #Original test data only goes to 2Nf=20000. Thus below is extrapolated: 0.00446 50000 320.9 0. 0.00007 73150. #Fitted_point 0.00416 100000 301.9 0. 0.00003 73150. #Fitted_point 0.00390 200000 284.0 0. 0.00001 73150. #Fitted_point 0.00359 500000 262.1 0. 0.00000 73150. #Fitted_point #