作者:标准资料网 时间:2024-05-13 14:46:49   浏览:9488   来源:标准资料网

【英文标准名称】:StandardTestMethodforTensilePropertiesofThinPlasticSheeting
【原文标准名称】:薄塑料板的抗拉特性的标准试验方法
【标准号】:ASTMD882-2010
【标准状态】:现行
【国别】:美国
【发布日期】:2010
【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】:D20.19
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:modulusofelasticity;plasticfilm;plasticsheeting;tensileproperties;tensilestrength;toughness;yieldstress;Plasticsheetandfilm;Tensileproperties/testing--plastics;Thinsheeting;Modulusofelasticity--plastics;Toecompensation;Tou
【摘要】:Tensilepropertiesdeterminedbythistestmethodareofvaluefortheidentificationandcharacterizationofmaterialsforcontrolandspecificationpurposes.Tensilepropertiescanvarywithspecimenthickness,methodofpreparation,speedoftesting,typeofgripsused,andmannerofmeasuringextension.Consequently,whereprecisecomparativeresultsaredesired,thesefactorsmustbecarefullycontrolled.Thistestmethodshallbeusedforrefereepurposes,unlessotherwiseindicatedinparticularmaterialspecifications.Formanymaterials,therecanbeaspecificationthatrequirestheuseofthistestmethod,butwithsomeproceduralmodificationsthattakeprecedencewhenadheringtothespecification.Therefore,itisadvisabletorefertothatmaterialspecificationbeforeusingthistestmethod.Table1inClassificationD4000liststheASTMmaterialsstandardsthatcurrentlyexist.Tensilepropertiescanbeutilizedtoprovidedataforresearchanddevelopmentandengineeringdesignaswellasqualitycontrolandspecification.However,datafromsuchtestscannotbeconsideredsignificantforapplicationsdifferingwidelyfromtheload-timescaleofthetestemployed.Thetensilemodulusofelasticityisanindexofthestiffnessofthinplasticsheeting.Thereproducibilityoftestresultsisgoodwhenprecisecontrolismaintainedoveralltestconditions.Whendifferentmaterialsarebeingcomparedforstiffness,specimensofidenticaldimensionsmustbeemployed.Thetensileenergytobreak(TEB)isthetotalenergyabsorbedperunitvolumeofthespecimenuptothepointofrupture.Insometextsthispropertyhasbeenreferredtoastoughness.Itisusedtoevaluatematerialsthataresubjectedtoheavyabuseorthatcanstallwebtransportequipmentintheeventofamachinemalfunctioninend-useapplications.However,therateofstrain,specimenparameters,andespeciallyflawscancauselargevariationsintheresults.Inthatsense,cautionisadvisedinutilizingTEBtestresultsforend-usedesignapplications.Materialsthatfailbytearinggiveanomalousdatawhichcannotbecomparedwiththosefromnormalfailure.1.1Thistestmethodcoversthedeterminationoftensilepropertiesofplasticsintheformofthinsheetingandfilms(lessthan1.0mm(0.04in.)inthickness).Note18212;FilmisdefinedinTerminologyD883asanoptionaltermforsheetinghavinganominalthicknessnogreaterthan0.25mm(0.010in.).Note28212;Tensilepropertiesofplastics1.0mm(0.04in.)orgreaterinthicknessshallbedeterminedaccordingtoTestMethodD638.1.2Thistestmethodcanbeusedtotestallplasticswithinthethicknessrangedescribedandthecapacityofthemachineemployed.1.3Specimenextensioncanbemeasuredbygripseparation,extensionindicators,ordisplacementofgagemarks.1.4Theprocedurefordeterminingthetensilemodulusofelasticityisincludedatonestrainrate.Note38212;Themodulusdeterminationisgenerallybasedontheuseofgripseparationasameasureofextension;however,thedesirabilityofusingextensometers,asdescribedin5.2,isrecognizedandprovisionfortheuseofsuchinstrumentationisincorporatedintheprocedure.1.5Testdataobtainedbythistestmethodisrelevantandappropriateforuseinengineeringdesign.1......
【中国标准分类号】:G33
【国际标准分类号】:83_140_10
【页数】:10P.;A4
【正文语种】:英语