MECHANICAL PROPERTIES OF THE FIBERGLASS PREPREG SYSTEM USED FOR THE NATIONAL TRANSONIC FACILITY REPLACEMENT BLADE SET

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1、NASATechnicalMemorandum102756NASA-TM-10275619910008807MECHANICALPROPERTIESOFTHEaFIBERGLASSPREPREGSYSTEMUSEDFORTHENATIONALTRANSONICFACILITYREPLACEMENTBLADESETClarenceP.Young,Jr.andJohnW.WallaceFEBRUARY1991NalionalAeronautic,*;andSpaceAdministration_,I_RI_199!LangleyResearchCenterHamplon,Virginia2366

2、5-5225LANGLEYLIBRARyRESEARCHNA_*_CENTER,"_.HAMHON,VIRGINIAContentsListofTablesandFigures..............................iiSummary.....................................1ListofSymbols...................................1Introduction....................................2MaterialLayupDescription............

3、.................2MechanicalPropertiesTests.............................3Tensile.....................................3Compression...................................5InterlaminarShear................................6Fatigue.....................................6ThermalExpansion.......................

4、.........7Creep......................................7ThermalCycling.................................8AdditionalTests..................................8EvaluationofTensileandFatiguePropertiesforDesignRequirements...........9ConcludingRemarks...............................10Recommendations..........

5、.......................10References....................................10b

6、propertiesofdesignlaminatefornewblades(last15manufact.)comparedwithoriginalblades.........12IVFatiguestrength,residualstrengthforfatiguespecimens,creepandC.T.E.propertiesfordesignlaminate..........12VResidualtensilestrengthafterthermalcycling...........13VIAdditionaltestdata......................13

7、VIIComparisonofmeasuredpeakstresseswithfatiguestrengthandultimatestrength..................14VIIIMeasuredpeakstaticanddynamicstressesatairfoilrootduringtunneloperationatdesignloadconditionsandassociatedsafe