ASTM D6108-2009 塑料层材和形材压缩特性的标准试验方法

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【英文标准名称】:StandardTestMethodforCompressivePropertiesofPlasticLumberandShapes
【原文标准名称】:塑料层材和形材压缩特性的标准试验方法
【标准号】:ASTMD6108-2009
【标准状态】:现行
【国别】:美国
【发布日期】:2009
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:D20.20
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:compressiveproperties;compressivestrength;modulusofelasticity;plasticlumber;plasticshapes;recycledplastic;secantmodulus;stressatagivenstrain;Compressiontesting--plastics;Lumber(plastic);Plasticlumber/shapes;Reinforcedplas
【摘要】:Compressiontestsprovideinformationaboutthecompressivepropertiesofplasticlumberandshapeswhentheseproductsareusedunderconditionsapproximatingthoseunderwhichthetestsaremade.Inthecaseofsomematerials,therewillbeaspecificationthatrequirestheuseofthistestmethod,butwithsomeproceduralmodificationsthattakeprecedencewhenadheringtothespecification.Therefore,itisadvisabletorefertothatmaterialspecificationbeforeusingthistestmethod.Table1inClassificationD4000liststheASTMmaterialsstandardsthatcurrentlyexist.Compressivepropertiesincludemodulusofelasticity,secantmodulus,compressivestrength,andstressatagivenstrain.Inthecaseofamaterialthatfailsincompressionbyashatteringfracture,thecompressivestrengthhasaverydefinitevalue.Inthecaseofamaterialthatdoesnotfailincompressionbyashatteringfracturenorexhibitsacompressiveyieldpoint,thecompressivestrengthisanarbitraryonedependinguponthedegreeofdistortionthatisregardedasindicatingcompletefailure.Manyplasticlumbermaterialswillnotexhibitatrueyieldpoint.Compressivestrengthcanhavenorealmeaninginsuchcases.Forplasticlumber,thestressatagivenstrainof3%(0.03in./in.(mm/mm))istypicallyused.Compressiontestsprovideastandardmethodofobtainingdataforresearchanddevelopment,qualitycontrol,acceptanceorrejectionunderspecifications,andspecialpurposes.Thetestscannotbeconsideredsignificantforengineeringdesigninapplicationsdifferingwidelyfromtheload-timescaleofthestandardtest.Suchapplicationsrequireadditionaltestssuchasimpact,creep,andfatigue.1.1Thistestmethodcoversthedeterminationofthemechanicalpropertiesofplasticlumberandshapes,whentheentirecross-sectionisloadedincompressionatrelativelylowuniformratesofstrainingorloading.Testspecimensinthex201C;as-manufacturedx201D;formareemployed.Assuch,thisisatestmethodforevaluatingthepropertiesofplasticlumberorshapesasaproductandnotamaterialpropertytestmethod.1.2Plasticlumberandplasticshapesarecurrentlymadepredominantlywithrecycledplastics.However,thistestmethodwouldalsobeapplicabletosimilarmanufacturedplasticproductsmadefromvirginresins,orwheretheproductisnon-homogenousinthecross-section.1.3Thevaluesstatedininch-poundunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Note18212;ThereisnoknownISOequivalenttothistestmethod.
【中国标准分类号】:G33
【国际标准分类号】:83_140_01
【页数】:5P.;A4
【正文语种】:英语