ASME A112.18.1M Errata-1994 管道固定配件.勘误表
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【英文标准名称】:Plumbingfixturefittings;Errata
【原文标准名称】:管道固定配件.勘误表
【标准号】:ASMEA112.18.1MErrata-1994
【标准状态】:作废
【国别】:美国
【发布日期】:1994
【实施或试行日期】:
【发布单位】:美国机械工程师协会(US-ASME)
【起草单位】:ASME
【标准类型】:()
【标准水平】:()
【中文主题词】:卫生设施;配件;装置;给水设施;阀门;管道配件
【英文主题词】:installations;watersupplyinstallations;valves;pipefittings;fittings;sanitaryfacilities
【摘要】:
【中国标准分类号】:J15
【国际标准分类号】:91_140_70
【页数】:5P.;A4
【正文语种】:英语
基本信息
| 标准名称： | 小型组合冲模 腰圆凸模 |
| 中标分类： |
航空、航天 >>
航空器与航天器制造用设备 >>
模具 |
| ICS分类： |
机械制造 >>
无屑加工设备 >>
模制设备和铸造设备
|
| 发布日期： | 1983-08-25 |
| 实施日期： | 1983-09-01 |
| 首发日期： | |
| 作废日期： | |
| 出版日期： | |
| 页数： | 1页 |
适用范围
没有内容
前言
没有内容
目录
没有内容
引用标准
没有内容
所属分类： 航空 航天 航空器与航天器制造用设备 模具 机械制造 无屑加工设备 模制设备和铸造设备
【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
