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【英文标准名称】:StandardTestMethodforDeterminingThermoplasticPipeWallStiffness
【原文标准名称】:测定热塑管壁硬挺度的标准试验方法
【标准号】:ASTMF2433-2005
【标准状态】:现行
【国别】:
【发布日期】:2005
【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】:F17.40
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:管;塑料管;测定;试验;管道;热塑性的;硬挺度;管壁
【英文主题词】:buckling;modulusofrelaxation;momentofinertia;pipestiffness;residualpipestiffness
【摘要】:Theperformanceunderbendingandcompressionloadofathermoplasticplasticpipewalldesignobtainedbythismethodcanbeusedforthefollowing:5.1.1Todeterminethestiffnessofthepipewallsection.Thisisafunctionofthepipedimensions,thewalldesign,thearclengthtested,andthephysicalpropertiesofthematerialofwhichthepipeismade.5.1.2Tocomparethecharacteristicsofvariousthermoplasticpipewalldesigns.5.1.3Tocomparethecharacteristicsofvariousplasticsinpipeform.5.1.4Tostudytheinterrelationsofdimensions,materials,anddeformationpropertiesofthermoplasticpipedesigns.5.1.5Tomeasurethedeformationandload-resistanceatanyofseveralsignificanteventswhichmayoccurduringthetest.5.1.6Toprovideareasonablequalitycontrol/qualityassurancetestforverylargediameterplasticpipes.Thetime-dependentpipewallstiffnessofathermoplasticpipeobtainedbythistestmethodmayusedforthefollowing:5.2.1Topredicttheresidualstiffnessofthepipewallinbendingandcompressionatalltimesafterinitialloading.5.2.2Forpurposesofdesign,todetermineamodulusofrelaxationundersustainedloads.5.2.3Toquantifytheinfluenceofmaterialformulationsofthermoplasticsonthemodulusofrelaxation.5.2.4Tostudytheinfluenceofgeometricpatternsofwallprofilesonthemodulusofrelaxation.Thetime-independentreductionofwallthicknessatspringlinemaybeusedforthefollowing:5.3.1Forpipewallstiffness,toquantifytheefficiencyofallwallprofilesofanymaterialcompositionandagivengeometrywiththatofasoliduniformthicknesswall.1.1Thistestmethodcoversthedeterminationoftheload-deflectionbehaviorofthermoplasticpipewallsectionsunderparallelplateloadingconditions.Note18212;Thesearenotfullpipesectiontests,butpipewallsegmenttests.TheresultsofthesetestswillbedifferentfrompipestiffnesstestsperTestMethodD2412,althoughtheymaybeproportional.Thistestprovidesquitedifferentinformation,including,stressrelaxationunderconstantstrain,andcomparisonsofthefunctionandstiffnessofdifferentpipewalldesignsormaterials.1.2Thistestmethodcoversaloadingtestfordeterminingthewallstiffnessofathermoplastic-pipewallunderacombinedloadofbendingandcompression.Changesinpipewallprofilegeometryunderloadmayalsobedetermined.1.3Thistestmethodcoversthermoplasticpipe.1.4Thecharacteristicsdeterminedbythistestmethodarewallstiffnessandchangesinprofilewalldimensionsatspecificdeformations.1.5Thecharacteristicsdeterminedbythistestmethodarewallstiffness,profilewallefficiency,andforsomewallelementsstabilityatspecificStrainlevels.1.6ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.7Thetextofthisspecificationreferencesnotesandfootnotesthatprovideexplanatorymaterial.Thesenotesandfootnotes(excludingthoseintablesandfigures)shallnotbeconsideredasrequirementsofthespecification.1.8Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:G33
【国际标准分类号】:23_040_20
【页数】:6P.;A4
【正文语种】:


【英文标准名称】:ESSENTIALOILS.DETERMINATIONOFACIDVALUE.
【原文标准名称】:香精油.酸性指数的测定
【标准号】:NFT75-103-1982
【标准状态】:作废
【国别】:法国
【发布日期】:1982-06
【实施或试行日期】:1982-05-24
【发布单位】:法国标准化协会(AFNOR)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:化学分析;香精油;试验条件;酸值;规程;化学分析和试验
【英文主题词】:testingconditions;procedure;essentialoils;acidnumber;chemicalanalysisandtesting;chemicalanalysis
【摘要】:
【中国标准分类号】:B36;X46
【国际标准分类号】:
【页数】:3P;A4
【正文语种】:其他