# #Copyright (C) 2010 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 # # Fitted Curve ! # AA 6061 Merged File: Aluminum Wrought, Data from reference: # [1] R.F.Brodrick, G.A.Spiering, "Low Cycle Fatigue of Aluminum Alloys", # ASTM J.of Matls, V7 N4 Dec 1972, pp.515-526 # [2] Y.S. Chung, A.Abel, ASTM STP 942 1988. # saedigcurve_v2.2.f starts. # #FileType= strain_life #DataType= fitted #TIMEcol= 0 #NAME= AA6061_T6xx #Name= Aluminum #Stress_units= ksi #Strain_units= strain #Su= 43.2 ksi (reported by [1] #Sy= 38.8 ksi average (40.1 and 37.4 observed) ksi 0.2% offset #E= 10100. #%RA= 45.4 percent [1] #%Elong= 18.3 percent over 2 inch. [1] #TrueFractureStress= 69.2 ksi [1] #TrueFractureStrain= 0.61 [1] #MonotonicStrengthCoefficient= 63.8 [1] #MonotonicStrainHardeningExponent= 0.124 [1] #BHN= 0. #Data from Chung and Abel: #NO. FAT. PTS.= 13 #____ #Brodrick and Spierling: #NO. FAT. PTS.= 12 # # AA6061_T6x Aluminum BHN= 0 Fn= 0 # Monotonic Props. Cyclic Props. #ELAS. MOD.= 10100. KSI, 70. GPA K' = 67.0 KSI, 462.MPA #YIELD,0.2%= 39. KSI, 268. MPA N' = 0.0854 #ULT. STRG.= 43. KSI, 298. MPA F. STRG COEF= 71.2 KSI, 491.MPA #K = 0.0 KSI, 0. MPA F.STRG EXP, b=-0.0757 #N = 0.0000 FAT DUCT COEF= 2.0289 #RED. IN AREA = 45.4 F.DUCT EXP, c=-0.8874 #T. FRAC. STG.= 0.0 KSI, 0. MPA Exp Cyc Yld = 39. Ksi, 272.MPA #T. FRAC. STR.= 0.000 Fit Cyc Yld = 40. Ksi, 273.MPA #No. fatigue data points= 25 # #NOTE!! The Following Points are <b>FITTED DATA:</b>#NOTE!! Fitted Stress computed using Experm. K' and n' #Stress_Units= KSI #Total Strain 2Nf Stress Mean Plastic Strain Initial NeuberRg #Amp Amp Stress Amp Elastic Mod. #2.03595 1 72.8 0. 2.02874 10100. #Fitted_point Deleted from automatic fit .61 1 69.2 0 .60 10100. 1305. #Fitted_point manually 0.0207 200 47.8 0. 0.01838 10100. 200. #Fitted_point manually 0.01257 500 44.8 0. 0.00814 10100. 150.8 #Fitted_point 0.00859 1000 42.4 0. 0.00439 10100. 121.3 #Fitted_point 0.00635 2000 40.2 0. 0.00237 10100. 101.6 #Fitted_point 0.00476 5000 37.4 0. 0.00105 10100. 84.8 #Fitted_point 0.00408 10000 35.4 0. 0.00057 10100. 76.4 #Fitted_point 0.00364 20000 33.6 0. 0.00031 10100. 70.3 #Fitted_point .00277 101894 27.95 0. .0 10100. 55.9 #Fitted_point manually using Neuber plots .00228 377440 23.06 0. .0 10100. 46.1 #Fitted_point manually using Neuber plots .00198 1719700 20.0 0. .0 10100. 40.0 #Fitted_point manually using Neuber plots .00145 35700000 14.65 0. .0 10100. 29.3 #Fitted_point manually using Neuber plots #