# #Copyright (C) 2011 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 # # NOTE!: Data are FITTED points! # High purity Iron. Room Temp. Load Control tests. # 0.0075C_wt% .0075N .0025O .0002S .0003Mn # Heated in vacuum at 700C for 3hrs, Cooled at 100C/min # Ref.: S.M.Pickard, F.Guiu, and A.P.Blackie, "Low Cycle Fatigue of # Strain Aging Ferrous Alloys," ASTM STP 942 1988 pp.776-797 # Tests in LOAD control with plastic strains measured. Total strains # computed from stress, Emodulus, and plastic strain # Tensile props. taken from other work on high pure Fe. # Warning!: Data points measured from graphs, some errors possible. # saedigcurve_v2.2.f starts. # #FileType= strain_life #DataType= fitted #TIMEcol= 0 #NAME= PureIron+N #NAME= Vac700C3hrs #NAME= Iron #Stress_units= mpa #E= 210000. #assumed #Sy= 130 # estimated from PlasticStrain ampl vs cycles plot #Su= 230 #Assumed from K.Pohl et al. Not reported in original work #%RA= 0. not reported #BHN= 0. not reported #NO. FAT. PTS.= 8 # # NOTE!! The Following Points are <b>FITTED DATA:</b>#NOTE!! Fitted Stress computed using Experm. K' and n' #Stress_Units= MPa # Total Strain 2Nf Stress Mean Plastic Strain Initial # Amp Amp Stress Amp Elastic Mod. 1.0 1 650. 0. 0.997 210000. #Fitted_point adapted from other work 0.00382 20000 192.6 0. 0.00290 210000. #Fitted_point 0.00253 50000 171.1 0. 0.00171 210000. #Fitted_point 0.00189 100000 156.5 0. 0.00115 210000. #Fitted_point 0.00145 200000 143.1 0. 0.00077 210000. #Fitted_point 0.00106 500000 127.2 0. 0.00045 210000. #Fitted_point 0.00086 1000000 116.3 0. 0.00030 210000. #Fitted_point 0.00071 2000000 106.4 0. 0.00020 210000. #Fitted_point 0.00057 5000000 94.5 0. 0.00012 210000. #Fitted_point #