ASTM D695 塑料 压缩

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1、AnAmericanNationalStandardDesignation:D695–02StandardTestMethodfor1CompressivePropertiesofRigidPlasticsThisstandardisissuedunderthe®xeddesignationD695;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumbe

2、rinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(e)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheDepartmentofDefense.1.ScopeDeterminethePrecisionofaTestMethod61.1Thistestmethodcoversthedeterminationof

3、theme-3.Terminologychanicalpropertiesofunreinforcedandreinforcedrigidplas-tics,includinghigh-moduluscomposites,whenloadedin3.1De®nitions:compressionatrelativelylowuniformratesofstrainingor3.1.1compressivedeformationÐthedecreaseinlengthpro-loading.Testspecimensofstandardshapearee

4、mployed.ducedinthegagelengthofthetestspecimenbyacompressive1.2ThevaluesstatedinSIunitsaretoberegardedastheload.Itisexpressedinunitsoflength.standard.Thevaluesinparenthesesareforinformationonly.3.1.2compressivestrainÐtheratioofcompressivedefor-mationtothegagelengthofthetestspecim

5、en,thatis,theNOTE1ÐForcompressivepropertiesofresin-matrixcompositesrein-changeinlengthperunitoforiginallengthalongthelongitu-forcedwithorientedcontinuous,discontinuous,orcross-plyreinforce-dinalaxis.Itisexpressedasadimensionlessratio.ments,testsmaybemadeinaccordancewithTestMetho

6、dD3410.3.1.3compressivestrengthÐthemaximumcompressive1.3Thisstandarddoesnotpurporttoaddressallofthestress(nominal)carriedbyatestspecimenduringacompres-safetyconcerns,ifany,associatedwithitsuse.Itisthesiontest.Itmayormaynotbethecompressivestressresponsibilityoftheuserofthisstanda

7、rdtoestablishappro-(nominal)carriedbythespecimenatthemomentofrupture.priatesafetyandhealthpracticesanddeterminetheapplica-3.1.4compressivestrengthatfailure(nominal)Ðthecom-bilityofregulatorylimitationspriortouse.Aspeci®cprecau-pressivestress(nominal)sustainedatthemomentoffailure

8、oftionarystatementisgiveninNote11.thetestspecim