# # Fitted Curve: Check long life data. Flat fatigue limit assumed. # AISI 4142 Q+T AT 800F, LONGITUDINAL # LANDGRAF, T+AM320,1968, BHN 400 # saedigcurve_v2.2.f starts. # Copyright (C) 2000 R.W. Landgraf # 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 # #NAME= SAE4142 #Name= AlloySteel #Fn= 44 # #FileType= strain_life #DataType= fitted #TIMEcol= 0 #Stress_units= ksi #Strain_units= strain #Su= 224.90 #Sy= 209.90 #E= 28979. #%RA= 47.0 #BHN= 400. #NO. FAT. PTS.= 10 # SAE4142 AlloySteel BHN= 400 Fn= 44 # Monotonic Props. Cyclic Props. #ELAS. MOD.= 28979. KSI, 200. GPA K' = 254.6 KSI, 1756.MPA #YIELD,0.2%= 210. KSI, 1447. MPA N' = 0.0983 #ULT. STRG.= 225. KSI, 1551. MPA F. STRG COEF= 259.1 KSI, 1787.MPA #K = 0.0 KSI, 0. MPA F.STRG EXP, b=-0.0844 #N = 0.0000 FAT DUCT COEF= 1.1947 #RED. IN AREA = 47.0 F.DUCT EXP, c=-0.8591 #T. FRAC. STG.= 0.0 KSI, 0. MPA Exp Cyc Yld = 138. Ksi, 953.MPA #T. FRAC. STR.= 0.000 Fit Cyc Yld = 143. Ksi, 984.MPA #No. fatigue data points= 10 # # NOTE!! The Following Points are <b>FITTED DATA:</b>#NOTE!! Fitted Stress computed using Experm. K' and n' # NOTE!! Fatigue limit data adjusted manually. Not data # beyond 10**6 reversals FAC Jun09 #Stress_Units= KSI # Total Strain 2Nf Stress Mean Plastic Strain Initial # Amp Amp Stress Amp Elastic Mod. 1.20368 1 193.3 0. 1.19701 28979. #Fitted_point 0.66710 2 187.9 0. 0.66062 28979. #Fitted_point 0.30759 5 181.0 0. 0.30134 28979. #Fitted_point 0.17263 10 176.0 0. 0.16656 28979. #Fitted_point 0.09806 20 171.1 0. 0.09215 28979. #Fitted_point 0.04790 50 164.9 0. 0.04221 28979. #Fitted_point 0.02892 100 160.3 0. 0.02339 28979. #Fitted_point 0.01832 200 155.9 0. 0.01294 28979. #Fitted_point 0.01103 500 150.1 0. 0.00585 28979. #Fitted_point 0.00815 1000 145.7 0. 0.00312 28979. #Fitted_point 0.00645 2000 141.1 0. 0.00158 28979. #Fitted_point 0.00515 5000 133.9 0. 0.00053 28979. #Fitted_point 0.00455 10000 126.9 0. 0.00017 28979. #Fitted_point 0.00412 20000 118.2 0. 0.00004 28979. #Fitted_point 0.00370 50000 107.0 0. 0.00000 28979. #Fitted_point 0.00344 100000 99.7 0. 0.00000 28979. #Fitted_point 0.00322 200000 93.4 0. 0.00000 28979. #Fitted_point 0.00297 500000 86.0 0. 0.00000 28979. #Fitted_point 0.00279 1000000 80.9 0. 0.00000 28979. #Fitted_point 0.00279 10000000 80.9 0. 0.0000 28979. #Fitted_point manuall #