Designation:D4476/D4476M−14StandardTestMethodforFlexuralPropertiesofFiberReinforcedPultrudedPlasticRods1ThisstandardisissuedunderthefixeddesignationD4476/D4476M;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope*1.1Thistestmethodcoversthedeterminationoftheflexuralpropertiesoffiber-reinforcedpultrudedplasticrods.Thespeci-menisarodwithasemicircularcrosssection,moldedorcutfromlengthsofpultrudedrods(seeFig.1).Thistestmethodisdesignedforrodswithadiameterof1⁄2in.orgreater.NOTE1—ThereisnoknownISOequivalenttothisstandard.1.2ThevaluesstatedineitherSIunitsorinch-poundunitsaretoberegardedseparatelyasstandard.Thevaluesstatedineachsystemmaynotbeexactequivalents;therefore,eachsystemshallbeusedindependentlyoftheother.Combiningvaluesfromthetwosystemsmayresultinnonconformancewiththestandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2D618PracticeforConditioningPlasticsforTestingD883TerminologyRelatingtoPlasticsD3918TerminologyRelatingtoReinforcedPlasticPul-trudedProductsE4PracticesforForceVerificationofTestingMachinesE691PracticeforConductinganInterlaboratoryStudytoDeterminethePrecisionofaTestMethod3.Terminology3.1Fordefinitionsoftermsusedinthistestmethod,seeTerminologyD883orDefinitionsD3918.4.SummaryofTestMethod4.1Arodofsemicircularconstructionistestedinflexureasasimplebeam.Thespecimenrestsontwosupportsandisloadedbymeansofaloadingnosemidwaybetweenthesupports(seeFig.3).4.2Thespecimenisdeflecteduntilruptureoccursintheouterfibers,oruntilthemaximumfiberstrainof5%isreached,whicheveroccursfirst.5.SignificanceandUse5.1Flexuralpropertiesdete...
