SAE AMS5677 Alloy, Corrosion and Heat Resistant, Covered Welding Electrodes 75ni 19.5cr 1.6(Cb + Ta) (Cancelled Mar 1999
时间:2024-05-24 10:43:57 来源: 标准资料网 作者：标准资料网 阅读：8806
Product Code:SAE AMS5677
Title:Alloy, Corrosion and Heat Resistant, Covered Welding Electrodes 75ni 19.5cr 1.6(Cb + Ta) (Cancelled Mar 1999)
Issuing Committee:Ams F Corrosion Heat Resistant Alloys Committee
Scope:This specification covers a corrosion and heat resistant nickel alloy in the form of covered welding electrodes.
【英文标准名称】:StandardTablesforReferenceSolarSpectralIrradiances:DirectNormalandHemisphericalon37176;TiltedSurface
【原文标准名称】:参考太阳光谱辐照度的标准表:37斜面上直接垂直和半球状
【标准号】:ASTMG173-2003(2008)
【标准状态】:现行
【国别】:美国
【发布日期】:2003
【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】:G03.09
【标准类型】:(Guide)
【标准水平】:()
【中文主题词】:
【英文主题词】:directnormal;hemispherical;irradiance;solarconstant;solarspectrum;terrestrial;wavelength;Directnormalspectralirradiance;Hemisphericalspectralirradiance;Solarspectralirradiance;Tables(measurement)--petroleumproducts;Directnorm
【摘要】:Absorptance,reflectance,andtransmittanceofsolarenergyareimportantfactorsinmaterialdegradationstudies,solarthermalsystemperformance,solarphotovoltaicsystemperformance,biologicalstudies,andsolarsimulationactivities.Theseopticalpropertiesarenormallyfunctionsofwavelength,whichrequirethespectraldistributionofthesolarfluxbeknownbeforethesolar-weightedpropertycanbecalculated.Tocomparetherelativeperformanceofcompetitiveproducts,ortocomparetheperformanceofproductsbeforeandafterbeingsubjectedtoweatheringorotherexposureconditions,areferencestandardsolarspectraldistributionisdesirable.Thesetablesprovideappropriatestandardspectralirradiancedistributionsfordeterminingtherelativeopticalperformanceofmaterials,solarthermal,solarphotovoltaic,andothersystems.Thetablesmaybeusedtoevaluatecomponentsandmaterialsforthepurposeofsolarsimulationwhereeitherthedirectorthehemispherical(thatis,directbeamplusdiffusesky)spectralsolarirradianceisdesired.However,thesetablesarenotintendedtobeusedasabenchmarkforultravioletradiationusedinindoorexposuretestingofmaterialsusingmanufacturedlightsources.Thetotalintegratedirradiancesforthedirectandhemisphericaltiltedspectraare900.1Wx00B7;m-2and1000.4Wx00B7;m-2,respectively.Notethat,inPVapplications,noamplitudeadjustmentsarerequiredtomatchstandardreportingconditionirradiancesof1000Wx00B7;m-2forhemisphericalirradiance.Previouslydefinedglobalhemisphericalreferencespectrum(G159)forasun-facing37x00B0;-tiltedsurfaceservedwelltomeettheneedsoftheflatplatephotovoltaicresearch,development,andindustrialcommunity.Investigationofprevailingconditionsandmeasuredspectrashowsthatthisglobalhemisphericalreferencespectrumcanbeattainedinpracticeunderavarietyofconditions,andthattheseconditionscanbeinterpretedasrepresentativeformanycombinationsofatmosphericparameters.Earlierglobalhemisphericalreferencespectrummaybeclosely,butnotexactly,reproducedwithimprovedspectralwavelengthrange,uniformspectralinterval,andspectralresolutionequivalenttothespectralinterval,usinginputsinX1.4.ReferencespectrageneratedbytheSMARTSVersion2.9.2modelfortheindicatedconditionsareshowninFig.1.TheexactinputfilestructurerequiredtogeneratethereferencespectraisshowninTable1.Theavailabilityoftheadjunct(ADJG173CD)standardcomputersoftwareforSMARTSallowsoneto(1)reproducethereferencespectra,usingtheaboveinputparameters;(2)computetestspectratoattempttomatchmeasureddataataspecifiedFWHM,andevaluateatmosphericconditions;and(3)computetestspectrarepresentingspecificconditionsforanalysisvis-?/span>-visanyoneorallofthereferencespectra.Differencesfromthepreviousstandardspectra(G159)canbesummarizedasfollows:Extendedspectralintervalintheultraviolet(downto280nm,ratherthan305nm),Betterresolution(2002wavelengths,ascomparedto120),Constantintervals(0.5nmbelow400nm,1nmbetween400and1700nm,and5nmabove),Betterdefinitionofatmosphericscatteringandgaseousabsorption,withmorespeciesconsidered,Betterdefinedextraterrestrialspectrum,Morerealisticspectralgroundreflectance,andLoweraerosolopticaldepth,yieldingsignificantlylargerdirect......
【中国标准分类号】:A60
【国际标准分类号】:17_180_01
【页数】:21P.;A4
【正文语种】:英语
【英文标准名称】:StandardTestMethodsforImpactResistanceofRigidPoly(VinylChloride)(PVC)BuildingProducts
【原文标准名称】:刚性聚氯乙烯建筑制品的耐冲击性的标准试验方法
【标准号】:ASTMD4226-1999
【标准状态】:作废
【国别】:美国
【发布日期】:1999
【实施或试行日期】:
【发布单位】:美国材料与试验协会(ASTM)
【起草单位】:ASTM
【标准类型】:()
【标准水平】:()
【中文主题词】:冲击强度;塑料;聚氯乙烯;建筑;试验;冲击试验;塑料制品
【英文主题词】:impactstrength;plastics;plasticsproducts;construction;testing;impacttesting;polyvinylchloride
【摘要】:
【中国标准分类号】:Q74
【国际标准分类号】:83_080_20
【页数】:
【正文语种】:英语