# #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 # # NOTE: Fitted Data !! # Grey Iron Note: Original test data from LOAD CONTROL Tests! # Note: Fitted Curve did not use tests with mean stress. # 3.30C wt% 2.20Si .44Mn .40Cu # Ref.: J.Fash and D.F.Socie, "Fatigue behaviour and mean effects in grey # cast iron," Int.J.Fatigue July 1982 pp.137-142. # It is strongly recommended that in order to understand this work # the readers refer to the original paper listed above. # Data digitized from graphs and may contain errors. # # Note: Modulus used is average of tensile modulus and comp. modulus # Note: "Plastic Strain" doesn't have much meaning for Grey Iron. # #FileType= strain_life #DataType= fitted #TIMEcol= 0 #NAME= GreyIron #NAME= CastIron #Stress_units= mpa #Strain_units= strain #Sy= 185. 0.2pc offset = 26.9 ksi #Su= 228. #eu= 0.0122 #E= 96000. mpa =13930 ksi #FractureStrain= 0.0122 #FractureStress= 228. (same as ultimate) #monotonic_K= 0 not reported #monotonic_n= 0 not reported #BHN= 180. #%RA= 1.2 % #saedigcurve_v2.2.f starts. # NOTE!! The Following Points are <b>FITTED DATA:</b>#NOTE!! Fitted Stress computed using Experm. K' and n' #StrAmpl 2Nf StsAmpl So PlasStrAmpl IniMod NeuberEqiuvStressAmpl .0122 1 228. 0 .0098 96000. #Fitted_point monotonic test 0.00305 500 151.2 0. 0.00148 96000. #Fitted_point 0.00269 1000 141.2 0. 0.00121 96000. #Fitted_point 0.00237 2000 131.9 0. 0.00100 96000. #Fitted_point 0.00202 5000 120.6 0. 0.00077 96000. #Fitted_point 0.00180 10000 112.6 0. 0.00063 96000. #Fitted_point 0.00161 20000 105.2 0. 0.00052 96000. #Fitted_point 0.00140 50000 96.2 0. 0.00040 96000. #Fitted_point 0.00126 100000 89.9 0. 0.00033 96000. #Fitted_point 0.00114 200000 84.0 0. 0.00027 96000. #Fitted_point 0.00101 500000 76.8 0. 0.00021 96000. #Fitted_point 0.00092 1000000 71.7 0. 0.00017 96000. #Fitted_point #Original Test data ends at about 2Nf=1 million. Below are extrapolation: 0.00084 2000000 67.0 0. 0.00014 96000. #Fitted_point 0.00075 5000000 61.3 0. 0.00011 96000. #Fitted_point 0.00069 10000000 57.3 0. 0.00009 96000. #Fitted_point 0.00063 20000000 53.6 0. 0.00007 96000. #Fitted_point 0.00057 50000000 49.0 0. 0.00006 96000. #Fitted_point #