ASTM D4703-2010 将热塑性材料压塑为试样、饰板或板材的标准实施规程

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【英文标准名称】:StandardPracticeforCompressionMoldingThermoplasticMaterialsintoTestSpecimens,Plaques,orSheets
【原文标准名称】:将热塑性材料压塑为试样、饰板或板材的标准实施规程
【标准号】:ASTMD4703-2010
【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】:D20.09
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:
【英文主题词】:acrylonitrile-butadiene-styrene(ABS);chlorinatedpoly(vinylchloride)(CPVC);compressionmolding;polyethylene(PE);poly(vinylchloride)(PVC);styrene-butadiene;testspecimenpreparation;thermoplastics;Acrylonitrile-butadiene-styrene(ABS)
【摘要】:Themethodsbywhichsamplematerialsarepreparedandmoldedinfluencethemechanicalpropertiesofthespecimen.Unlikeinjectionmolding,theobjectiveofcompressionmoldingistoproducetestspecimensorsheetsthatarebothhomogeneousandisotropic.Moldedspecimensmaybemadefrompowderorpelletssuchasarereceiveddirectlyfromamaterialmanufacturer,particlesproducedinarecyclerecoveryoperation,orfromamilledpreformorsheetpreparedonatwo-rollmill.Thepowder,pellets,particles,preform,orsheetaremeltedandmoldedinamolddesignedtoproduceafinishedspecimenofagivengeometry,size,andthickness,ormeltedandmoldedintheformofasmoothplaqueorsheetofuniformthicknessfromwhichdesiredspecimensarecut,punched,ormachined.Workingacompoundonatwo-rollmillpriortomoldingwilldisperseanddistributethecompoundadditivesinamannerthatwillaffectthephysicalpropertiesofthecompound.Theneedformillingasamplepriortocompressionmoldingmaybedeterminedbyreferencetotherelevantmaterialspecificationorthematerialmanufacturer.Itisimportanttotreatdifferentsamplesofthesametypeofmaterialinthesameway:ifmillingwasdonepriortomoldingonamaterialwhichistobeusedasastandardforcomparison,allnewmaterialstobetestedagainstthispracticeshouldbepreparedandmoldedinasimilarmanner.Theapparatusandexactconditionsrequiredtoprepareadequatespecimensmayvaryforeachplasticmaterial.ApparatusandprocedureswhichshouldbesatisfactoryformoldingmanydifferentplasticmaterialsaregiveninthispracticeinSections5and6.TheapparatusandprocedureswhichhavebeenfoundsatisfactoryformoldingcertainspecificmaterialsaregivenintheAppendix.Inanycase,theapparatusandprocedurestobeusedinproducingcompression-moldedspecimensofagivenmaterialmaybeobtainedbyreferencetotherelevantmaterialspecificationandshouldbeagreeduponbetweenthepurchaserandthesupplier.1.1Thispracticecoversthecompressionmoldingofthermoplasticgranulesandmilledstockforthepreparationoftestspecimens.1.2Whileconditionsforcertainmaterialsaregiven,theprimarysourceofspecificconditionsshallbethematerialspecificationstandardsforeachtypeofmaterial.1.3ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Note18212;ThemainbodyofthispracticeisequivalenttoISO293-1986.AnnexA1andISO293-1986differinsomedetails;however,specimenspreparedusingAnnexA1,ProcedureAshouldbeequivalenttothosepreparedusingISO293-1986,CoolingMethodD.SpecimenspreparedusingAnnexA1,ProcedureCshouldbeequivalenttothosepreparedusingISO293-1986,CoolingMethodB.However,duetothegreatercoolingratetolerancesoftheISOstandard,specimenspreparedinaccordancewithISOCoolingMethodBmaynotbeequivalenttoAnnexA1,ProcedureC.
【中国标准分类号】:G33
【国际标准分类号】:
【页数】:12P.;A4
【正文语种】:英语

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Product Code:SAE ARP577
Title:Emergency Placarding - Internal and External
Issuing Committee:S-9 Cabin Safety Provisions Committee
Scope:This Aerospace Recommended Practice (ARP) provides criteria for the development and standardization of placards containing easily understood signs, symbols and/or instructions for locating and operating exits and emergency equipment which might be used or operated by cabin occupants and rescue personnel under emergency conditions. In addition, this ARP gives guidance in the selection and development of warning labels. The placards are intended to be seen and understood by occupants within and, in the case of external exit placards, by persons outside the airplane.【英文标准名称】:StandardTestMethodsforModulusandDampingofSoilsbyResonant-ColumnMethod
【原文标准名称】:用共振柱法测定土壤的模数和阻尼因数的标准试验方法
【标准号】:ASTMD4015-2007
【标准状态】:现行
【国别】:
【发布日期】:2007
【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】:D18.09
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:建筑;施工材料;阻尼(波);模数;土壤;测试
【英文主题词】:amplitude;confiningpressure;damping;dynamicloading;elasticwaves;elasticitymodulus;frequency;laboratorytests;nondestructivetests;resonance;sheartests;soils;strain;stress;torsionaloscillations;triaxialstress;vertical
【摘要】:Themodulusanddampingofagivensoil,asmeasuredbytheresonant-columntechniquehereindescribed,dependuponthestrainamplitudeofvibration,theambientstateofeffectivestress,andthevoidratioofthesoil,temperature,time,etc.Sincetheapplicationandcontroloftheambientstressesandthevoidratioarenotprescribedinthesemethods,theapplicabilityoftheresultstofieldconditionswilldependonthedegreetowhichtheapplicationandcontroloftheambientstressesandthevoidratio,aswellasotherparameterssuchassoilstructure,duplicatefieldconditions.Thetechniquesusedtosimulatefieldconditionsdependonmanyfactorsanditisuptotheengineertodecideonwhichtechniquesapplytoagivensituationandsoiltype.1.1Thesetestmethodscoverthedeterminationofshearmodulus,sheardamping,rodmodulus(commonlyreferredtoasYoung''smodulus),androddampingforsolidcylindricalspecimensofsoilintheundisturbedandremoldedconditionsbyvibrationusingtheresonantcolumn.Thevibrationofthespecimenmaybesuperposedonacontrolledambientstateofstressinthespecimen.Thevibrationapparatusandspecimenmaybeenclosedinatriaxialchamberandsubjectedtoanall-aroundpressureandaxialload.Inaddition,thespecimenmaybesubjectedtoothercontrolledconditions(forexample,pore-waterpressure,degreeofsaturation,temperature).Thesetestmethodsofmodulusanddampingdeterminationareconsiderednondestructivewhenthestrainamplitudesofvibrationarelessthan104rad(104in./in.),andmanymeasurementsmaybemadeonthesamespecimenandwithvariousstatesofambientstress.1.2Thesetestmethodscoveronlythedeterminationofthemodulusanddamping,thenecessaryvibration,andspecimenpreparationproceduresrelatedtothevibration,etc.,anddonotcovertheapplication,measurement,orcontroloftheambientstress.Thelatterproceduresmaybecoveredby,butarenotlimitedto,TestMethodsD2166orD2850.1.3AllrecordedandcalculatedvaluesshallconformtotheguideforsignificantdigitsandroundingestablishedinPracticeD6026.1.3.1Theproceduresusedtospecifyhowdataarecollected/recordedandcalculatedinthisstandardareregardedastheindustrystandard.Inaddition,theyarerepresentativeofthesignificantdigitsthatshouldgenerallyberetained.Theproceduresuseddonotconsidermaterialvariation,purposeforobtainingthedata,specialpurposestudies,oranyconsiderationsfortheusersobjectives;anditiscommonpracticetoincreaseorreducesignificantdigitsofreporteddatatobecommensuratewiththeseconsiderations.Itisbeyondthescopeofthisstandardtoconsidersignificantdigitsusedinanalysismethodsforengineeringdesign.1.3.2Measurementsmadetomoresignificantdigitsorbettersensitivitythanspecifiedinthisstandardshallnotberegardedanonconformancewiththisstandard.1.4ThevaluesstatedinSIunitsaretoberegardedasthestandard.ReportingtestresultsinunitsotherthanSIshallberegardedasconformancewiththesetestmethods.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:P13
【国际标准分类号】:93_020
【页数】:22P.;A4
【正文语种】: