#SAE Standard Data File: SRIM Composite # #FileType= strain_life #DataType= fitted #TIMEcol= 0 #Name= SRIM_0.120inchSheet #Name= FD+E_tests #Name= composite #Name= medianCurve # #Copyright (C) 2011 Fatigue Design and 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 #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 # # Fitted data Curve! Median of Scatter Line. # Material was tested by members of the Fatigue Design and # Eval. Comm. in the 1990s. Report compiled by Prof. Peter Kurath. UoI # Tests included Load Control R=-1, 0.1, and 0.5, and Strain Control # Curves were created by computing the median stress-strain curve # and then using the Neuber plot to compute life. # This curve is extrapolated beyond 2million reversals to failure. # #Stress_units= mpa #Strain_units= strain #Su= 171 mpa # ave. of 23 #Sy= 110 mpa # 0.1% strain offset. # #The initial modulus recorded in 18 cases as 11900. mpa ave. #From plots of the cyclic stress-strain curve it was concluded #that the fatigue "elastic" modulus for tests is 8600mpa #E= 8600 mpa # ##StrAmp 2Nf StsAmp MeanSts Pl_StrAmp Modulus ## mpa mpa mpa 0.03 1 215 0 0 8600 #Fitted_point 0.0197 74 146.8 0 0 8600 #Fitted_point 0.0135 632 105.4 0 0 8600 #Fitted_point 0.0114 1888 89.7 0 0 8600 #Fitted_point 0.00981 5020 77.7 0 0 8600 #Fitted_point 0.00886 10010 70.8 0 0 8600 #Fitted_point 0.00759 27600 61.4 0 0 8600 #Fitted_point 0.00638 90360 52 0 0 8600 #Fitted_point 0.00553 266000 44.5 0 0 8600 #Fitted_point 0.00484 700000 38.8 0 0 8600 #Fitted_point 0.0042 2016720 33.9 0 0 8600 #Fitted_point 0.0032 20000000 27.4 0 0 8600 #Fitted_point # #