NF A08-710-3-2010 铜和铜合金.镍含量的测定.第3部分:火焰原子吸收光谱法(FAAS)
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【英文标准名称】:Copperandcopperalloys-Determinationofnickelcontent-Part3:flameatomicabsorptionspectrometricmethod(FAAS).
【原文标准名称】:铜和铜合金.镍含量的测定.第3部分:火焰原子吸收光谱法(FAAS)
【标准号】:NFA08-710-3-2010
【标准状态】:现行
【国别】:法国
【发布日期】:2010-11-01
【实施或试行日期】:2010-11-06
【发布单位】:法国标准化协会(FR-AFNOR)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:分析;原子吸收分光光度测定法;铸件;含量;铜;铜合金;测定;含量测定;FAAS方法;火焰原子吸收光谱测定法;方法;分析方法;镍;镍含量;有色金属
【英文主题词】:Analysis;Atomicabsorptionspectrophotometry;Castings;Content;Copper;Copperalloys;Determination;Determinationofcontent;FAASmethods;Flameatomicabsorptionspectrometry;Methods;Methodsofanalysis;Nickel;Nickelcontent;Non-ferrousmetals
【摘要】:
【中国标准分类号】:H13
【国际标准分类号】:77_120_30
【页数】:15P;A4
【正文语种】:其他
【英文标准名称】:StandardPracticeforDeterminingResistanceofSolarCollectorCoverstoHailbyImpactWithPropelledIceBalls
【原文标准名称】:用发射冰球法测定太阳能收集器覆盖材料对冰雹冲击抗力的标准实施规程
【标准号】:ASTME822-1992(2009)
【标准状态】:现行
【国别】:美国
【发布日期】:1992
【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】:E44.05
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:
【英文主题词】:hail;iceballs;impact;impactresistance;solarcollector;Covermaterials--solarcollectors;Hail;Iceballs;Impactresistance;Propellediceballs;Solarcollectors
【摘要】:Inmanygeographicareasthereisconcernabouttheeffectoffallinghailuponsolarcollectorcovers.Thispracticemaybeusedtodeterminetheabilityofflat-platesolarcollectorcoverstowithstandtheimpactforcesofhailstones.Inthispractice,theabilityofasolarcollectorcoverplatetowithstandhailimpactisrelatedtoitstestedabilitytowithstandimpactfromiceballs.Theeffectsoftheimpactonthematerialarehighlyvariableanddependentuponthematerial.Thispracticedescribesastandardprocedureformountingthetestspecimen,conductingtheimpacttest,andreportingtheeffects.Theproceduresformountingcoverplatematerialsandcollectorsareprovidedtoensurethattheyaretestedinaconfigurationthatrelatestotheiruseinasolarcollector.Thecornerlocationsofthefourimpactsarechosentorepresentvulnerablesitesonthecoverplate.Impactsnearcornersupportsaremorecriticalthanimpactselsewhere.Onlyasingleimpactisspecifiedateachoftheimpactlocations.Fortestcontrolpurposes,multipleimpactsinasinglelocationarenotpermittedbecauseasubcriticalimpactmaystillcausedamagethatwouldaltertheresponsetosubsequentimpacts.Resultantvelocityisusedtosimulatethevelocitythatmaybereachedbyhailaccompaniedbywind.Theresultantvelocityusedinthispracticeisdeterminedbyvectoradditionofa20m/s(45mph)horizontalvelocitytotheverticalterminalvelocity.Iceballsareusedinthispracticetosimulatehailstonesbecausenaturalhailstonesarenotreadilyavailabletouse,andiceballscloselyapproximatehailstones.However,nodirectrelationshiphasbeenestablishedbetweentheeffectofimpactoficeballsandhailstones.Hailstonesarehighlyvariableinpropertiessuchasshape,density,andfrangibility.Thesepropertiesaffectfactorssuchasthekineticenergydeliveredtothecoverplate,theperiodduringwhichenergyisdelivered,andtheareaoverwhichtheenergyisdistributed.Iceballs,withadensity,frangibility,andterminalvelocityneartherangeofhailstones,arethenearesthailstoneapproximationknownatthistime.Perhapsthemajordifferencebetweeniceballsandhailstonesisthathailstonesaremuchmorevariablethaniceballs.However,iceballscanbeuniformlyandrepeatedlymanufacturedtoensureaprojectilewithknownproperties.Awiderangeofobservableeffectsmaybeproducedbyimpactingthevarioustypesofcoverplatematerials.Theeffectsmayvaryfromnoeffecttototaldestruction.Somechangesinthecovermaterialmaybevisiblewhenthereisnoapparentfunctionalimpairmentofthecoverplatematerial.Alleffectsofeachimpactmustbedescribedinthereportsothatanestimateoftheirsignificancecanbemade.Datageneratedusingthispracticemaybeused:(1)toevaluateimpactresistanceofasinglematerialorcollector,(2)tocomparetheimpactresistanceofseveralmaterialsorcollectors,(3)toprovideacommonbasisforselectionofcovermaterialsorcollectorsforuseinvariousgeographicareas,or(4)toevaluatechangesinimpactresistanceduetoenvironmentalfactorssuchasweather.Thispracticedoesnotstatethesize(s)oficeball(s)tobeusedinmakingtheimpact.Eitherthepersonrequestingthetestorthepersonperformingthetestmustdetermineiceballsizetobeusedinthetesting.Choiceoficeballsizemayrelatetotheintentofthetesting.Ifthetestingisbeingperformedtoevaluateimpactresistanceofasinglematerialorcollector,orseveralmaterialsorcollectors,itmaybedesirabletorepeatthetestusingseveralsizesoficeballs.Inthismannerthedifferenteffectsofvarioussizesoficeball......
【中国标准分类号】:F12
【国际标准分类号】:27_160
【页数】:5P.;A4
【正文语种】:英语
基本信息
| 标准名称： | 船体结构 圆弧形舷缘泄水沟 |
| 中标分类： |
船舶 >>
船舶总体 >>
船体通用结构 |
| 发布日期： | 1984-02-10 |
| 实施日期： | 1985-01-01 |
| 首发日期： | 1900-01-01 |
| 作废日期： | 1900-01-01 |
| 出版日期： | 1900-01-01 |
| 页数： | 2页 |
适用范围
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前言
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目录
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引用标准
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所属分类： 船舶 船舶总体 船体通用结构
