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【英文标准名称】:StandardTestMethodforDeterminingtheCharpyImpactResistanceofNotchedSpecimensofPlastics
【原文标准名称】:测定塑料切口试样的抗夏氏冲击性能的标准试验方法
【标准号】:ASTMD6110-2010
【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】:D20.10
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:Charpyimpact;impactresistance;notchsensitivity;notchedspecimen;Charpyimpacttest;Impacttesting--Charpy;Notchedplasticspecimens;Windageandfrictioncorrectionchart
【摘要】:Beforeproceedingwiththistestmethod,refertothematerialspecificationforthematerialbeingtested.Anytestspecimenpreparation,conditioning,dimensionsandtestingparametersrequiredbythematerialsspecificationshalltakeprecedenceoverthoserequiredbythistestmethod.Table1ofClassificationD4000liststheASTMmaterialsstandardsthatcurrentlyexist.Ifthereisnomaterialspecification,thentherequirementsofthistestmethodapply.Thependulumimpacttestindicatestheenergytobreakstandardtestspecimensofspecifiedsizeunderstipulatedconditionsofspecimenmounting,notching(stressconcentration),andpendulumvelocityatimpact.Forthistestmethod,theenergylostbythependulumduringthebreakageofthespecimenisthesumoftheenergiesrequiredtoinitiatefractureofthespecimen;topropagatethefractureacrossthespecimen;tothrowthefreeendsofthebrokenspecimen(tossenergy);tobendthespecimen;toproducevibrationinthependulumarm;toproducevibrationorhorizontalmovementofthemachineframeorbase;toovercomefrictioninthependulumbearingandintheindicatingmechanism,andtoovercomewindage(pendulumairdrag);toindentordeform,plastically,thespecimenatthelineofimpact;andtoovercomethefrictioncausedbytherubbingofthestrikingnoseoverthefaceofthebentspecimen.Note58212;Thetossenergy,ortheenergyusedtothrowthefreeendsofthebrokenspecimen,issuspectedtorepresentaverylargefractionofthetotalenergyabsorbedwhentestingrelativelydenseandbrittlematerials.NoprocedurehasbeenestablishedforestimatingthetossenergyfortheCharpymethod.Fortough,ductile,fiber-filled,orcloth-laminatedmaterials,thefracturepropagationenergyisusuallylargecomparedtothefractureinitiationenergy.Whentestingthesematerials,energylossesduetofracturepropagation,vibration,frictionbetweenthestrikingnoseandthespecimenhasthepotentialtobecomequitesignificant,evenwhenthespecimenisaccuratelymachinedandpositioned,andthemachineisingoodconditionwithadequatecapacity(seeNote6).Significantenergylossesduetobendingandindentationwhentestingsoftmaterialshavealsobeenobserved.Note68212;Althoughtheframeandthebaseofthemachinemustbesufficientlyrigidandmassivetohandletheenergiesoftoughspecimenswithoutmotionorexcessivevibration,thependulumarmcannotbemadeverymassivebecausethegreaterpartofitsmassmustbeconcentratednearitscenterofpercussionatitsstrikingnose.Locatingthestrikingnosepreciselyatthecenterofpercussionreducesthevibrationofthependulumarmwhenusedwithbrittlespecimens.Somelossesduetopendulumarmvibration(theamountvaryingwiththedesignofthependulum)willoccurwithtoughspecimensevenwhenthestrikingnoseisproperlypositioned.Inawell-designedmachineofsufficientrigidityandmass,thelossesduetovibrationandfrictioninthependulumbearingandintheindicatingmechanismwillbeverysmall.Vibrationallossesareobservedwhenwidespecimensoftoughmaterialsaretestedinmachinesofinsufficientmass,orinmachinesthatarenotsecurelyfastenedtoaheavybase.Sincethistestmethodpermitsavariationinthewidthofthespecimensandsincethewidthdictates,formanymaterials,whetherabrittle,low-energybreak(asevidencedbylittleornodrawingdownorneckingandbyarelativelylowenergyabsorption)oraductile,high-energybreak(asevidencedbyconsiderabledrawingorneckingdownintheregionbehindthenotchandbyarelativelyhighenergyabsorption)willoccur,itis........
【中国标准分类号】:G31
【国际标准分类号】:83_140_01
【页数】:17P.;A4
【正文语种】:英语


【英文标准名称】:Aerospaceseries-Paintsandvarnishes-Twocomponentcoldcuringpolyurethanefinish-Part005:Highflexibilityandchemicalagentresistanceformilitaryapplication;GermanandEnglishversionEN2434-005:2006
【原文标准名称】:航空航天系列.涂料和清漆.双组分冷固化聚氨酯光洁度.第005部分:军用高柔性和耐化学试剂性
【标准号】:DINEN2434-005-2007
【标准状态】:现行
【国别】:德国
【发布日期】:2007-11
【实施或试行日期】:
【发布单位】:德国标准化学会(DE-DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:航空航天运输;耐化学性;分类;涂层材料;涂层清漆;涂层;弹性(流体);检验;军事工程;多语种的;涂料;聚氨酯;耐力;测试;双组分涂层;双组分精整涂层;双组分聚氨酯涂层材料;双组分聚氨酯精整涂层;清漆
【英文主题词】:Aerospacetransport;Airtransport;Chemicalresistance;Classification;Coatingmaterials;Coatingvarnishes;Coatings;Elasticproperties(fluids);Inspection;Militaryengineering;Multilingual;Paints;Polyurethane;Resistance;Testing;Two-componentcoatings;Two-componentfinishcoatings;Two-componentpolyurethanecoatingmaterials;Two-componentpolyurethanefinishcoatings;Varnishes
【摘要】:
【中国标准分类号】:V13
【国际标准分类号】:49_040
【页数】:39P.;A4
【正文语种】:德语