# # Note: Fitted Curve! # Median Strain Life Curve, median stress-straincurve # Reinforced (2.5-3.0mm glass fibers) Polypropylene material cut from 2.8mm # Injection molded placques. Tested in strain control at R=-1 120C # Ref: J.D.Rehkopf and F.A.Conle, "Strain-Life Fatigue Approach Applied to # Glass Fibre Reinforced Polypropylene", SAMPE, M233. # F.A.Conle and J.D.Rehkopf, "Analysis of the Results of Strain Controlled Fatigue # Testing of Reinforced Polypropylene", SAE Paper No. 2009-01-0258 #FileType= strain_life #DataType= fitted #Name= ReinfPolypropylene #Name= Temp=120C #Name= Polypro120C-2.7mmFiber # #Copyright (C) 2009 F.A.Conle #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 #Stress_units= MPa #Strain_units= strain #Sy= 17 mpa (using a E=2500 and 0.2% offset of median data) #Su= 21 mpa (varies from 10 to 35mpa) #E= 2500 (Based on cyclic: varies from -50% to +25%) #FractureStrain= 0.017 (median value) #FractureStress= 21 (same as ultimate) #MaterialForm= Injection_mold_2.8mm_sheets #FailureDef= 0.002 loop gap (see Refis.) #BHN= 0 # #NOTE!! The Following Points are <b>FITTED DATA:</b> #NOTE!! Manually fitted strain-life and stress-strain data FAC Dec.2009 #NOTE!! median of scatter band on strain-life data, median line on stress-strain # Total Strain 2Nf Stress Mean Plastic Strain Initial # Amp Amp Stress Amp Elastic Mod. #MEDIAN: 0.0160 1. 21.1 0.0 0.00856 2500. #Fitted_Point 0.0100 1000. 17.7 0.0 0.00292 2500. #Fitted_Point 0.0090 7500. 16.7 0.0 0.00232 2500. #Fitted_Point 0.0085 10600. 16.2 0.0 0.00202 2500. #Fitted_Point 0.0075 30000. 15.0 0.0 0.00150 2500. #Fitted_Point 0.0062 78000. 13.2 0.0 0.00092 2500. #Fitted_Point 0.0055 170000. 12.4 0.0 0.00054 2500. #Fitted_Point 0.0051 360000. 11.7 0.0 0.0004 2500. #Fitted_Point 0.0049 1000000. 11.3 0.0 0.00038 2500. #Fitted_Point 0.0047 4300000. 11.0 0.0 0.00030 2500. #Fitted_Point 0.0047 5000000. 11.0 0.0 0.00030 2500. #Fitted_Point # #