# saedigcurve_v2.2.f starts. #Copyright (C) 2022 Fatigue Design + Evaluation Comm. #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 MERCHANTA- #BILITY 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 # AA7249-T6511 aluminum extrusion !!! FITTED CURVE DATA file !!! # Solution treated, artificially aged, # Spec. from extruded 0.76 inch plate with stiffners. # 4 u_inch surface finish. 0.6in. gauge section. 0.5in. extensometer # Ref.: A.Arcari, "Enhanced strain-based fatigue methodology # Ref.: for high strength aluminum alloys", PhD thesis, Engr. Mech., # Ref.: Virginia Polytechnic, Jan 29, 2010 # Data from Appendix A #FileType= strain_life #DataType= fitted #TIMEcol= 0 #Name= AA7249-T6511 #Name= Extrusion #Stress_Units= mpa #Strain_Units= strain #Sy= 567.6 mpa #Su= 607.1 #E= 69889 average of 57 initial loadings #%Elongation= 13.32 over ? 1inch #%RA= 26.8 % #FractureStress= 687 mpa #FractureStrain= 0.312 # # NOTE!! The Following Points are <b>FITTED DATA:</b>#NOTE!! Fitted Stress computed using Experm. K' and n' # Total Strain 2Nf Stress Mean Plastic Strain Initial # Amp Amp Stress Amp Elastic Mod. 0.312 1 687 0. 0.302 69889. #Tensile test 0.02932 50 570.5 0. 0.02116 69889. #Fitted_point 0.02014 100 564.0 0. 0.01207 69889. #Fitted_point 0.01476 200 557.3 0. 0.00678 69889. #Fitted_point 0.01074 500 547.6 0. 0.00290 69889. #Fitted_point 0.00894 1000 538.1 0. 0.00124 69889. #Fitted_point 0.00772 2000 521.1 0. 0.00026 69889. #Fitted_point 0.00659 5000 460.5 0. 0.00000 69889. #Fitted_point 0.00595 10000 415.7 0. 0.00000 69889. #Fitted_point 0.00542 20000 378.6 0. 0.00000 69889. #Fitted_point 0.00482 50000 337.2 0. 0.00000 69889. #Fitted_point 0.00443 100000 310.0 0. 0.00000 69889. #Fitted_point 0.00408 200000 285.4 0. 0.00000 69889. #Fitted_point 0.00367 500000 256.4 0. -0.00000 69889. #Fitted_point 0.00338 1000000 236.5 0. 0.00000 69889. #Fitted_point 0.00312 2000000 218.3 0. 0.00000 69889. #Fitted_point 0.00281 5000000 196.3 0. 0.00000 69889. #Fitted_point 0.00259 10000000 181.2 0. 0.00000 69889. #Fitted_point 0.00239 20000000 167.3 0. 0.00000 69889. #Fitted_point 0.00215 50000000 150.5 0. 0.00000 69889. #Fitted_point 0.00199 100000000 139.0 0. 0.00000 69889. #Fitted_point 0.00184 200000000 128.3 0. -0.00000 69889. #Fitted_point 0.00165 500000000 115.5 0. 0.00000 69889. #Fitted_point 0.00153 1000000000 106.6 0. 0.00000 69889. #Fitted_point # #