ASTM F948-1994(2006) 在恒定内流动压力下塑料管道系统和组件损坏时间的标准试验方法
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【英文标准名称】:StandardTestMethodforTime-to-FailureofPlasticPipingSystemsandComponentsUnderConstantInternalPressureWithFlow
【原文标准名称】:在恒定内流动压力下塑料管道系统和组件损坏时间的标准试验方法
【标准号】:ASTMF948-1994(2006)
【标准状态】:现行
【国别】:
【发布日期】:1994
【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】:塑料;最终制品;管道装置;内压力;流动;失效率;试验;组件
【英文主题词】:constantflow;constantinternalpressure;plasticpipe;pressurepipe;timetofailure
【摘要】:Thedataobtainedbythistestmethodareusefulforestablishingpressure,orhoopstresswhereapplicable,versusfailure-timerelationships,underindependentlycontrolledinternalandexternalenvironmentsthatsimulateactualanticipatedproductend-useconditions,fromwhichthedesignbasis(DB)forpipingproductsormaterials,orboth,canbedetermined.(RefertoTestMethodD2837andPracticeD2992,andAppendixX1ofthistestmethod.)Note38212;Referencetodesignbasis(DB)inthistestmethodreferstothehydrostaticdesignbasis(HDB)formaterialinstraighthollowcylindricalshapeswherehoopstresscanbeeasilycalculated,orisbasedonappliedpressuredesignbasis(PDB)forcomplex-shapedproductsorsystemswherecomplexstressfieldsseriouslyprohibittheuseofhoopstress.Inordertocharacterizeplasticsaspipingproducts,itisnecessarytoestablishthestress-to-rupture-time,orpressure-to-rupture-timerelationshipsovertwoormorelogarithmicdecadesoftime(hours)withincontrolledenvironmentalparameters.Becauseofthenatureofthetestandspecimensemployed,nosinglelinecanadequatelyrepresentthedata.Therefore,theconfidencelimitsshouldbeestablished.Resultsobtainedatonesetofenvironmentalconditionsshouldnotbeusedforotherconditions,exceptthathighertemperaturedatacanbeusedforadesignbasisassignmentforlowerapplicationtemperatures,providedthatitcanbedemonstratedthattheapplicationconditionspresentalessstringentenvironment.Thedesignbasisshouldbedeterminedforeachspecificplasticmaterialandeachdifferentsetofenvironmentalconstraints.Designandprocessingcansignificantlyaffectthelong-termperformanceofpipingproducts,andthereforeshouldbetakenintoconsiderationduringanyevaluation(seeAppendixX2).Specimensusedmustberepresentativeofthepipingproductormaterialunderevaluation(seeAppendixX2).1.1Thistestmethodcoversthedeterminationofthetime-to-failureofplasticpipingproductsunderconstantinternalpressureandflow.1.2Thistestmethodprovidesamethodofcharacterizingplasticsintheformofpipe,components,andsystemsunderanyreasonablecombinationofinternalandexternaltemperaturesandenvironments,undertheproceduresdescribed.1.3Thistestmethodcanbeusedtocharacterizethetestedplasticmaterialsorproducts,orboth,onthebasisofpressure-,orstress-rupturedatadevelopedundertheconditionsprescribed.1.4Thevaluesstatedininch-poundunitsaretoberegardedasthestandard.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:J20
【国际标准分类号】:23_040_20
【页数】:6P.;A4
【正文语种】:
【原文标准名称】:在恒定内流动压力下塑料管道系统和组件损坏时间的标准试验方法
【标准号】:ASTMF948-1994(2006)
【标准状态】:现行
【国别】:
【发布日期】:1994
【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】:塑料;最终制品;管道装置;内压力;流动;失效率;试验;组件
【英文主题词】:constantflow;constantinternalpressure;plasticpipe;pressurepipe;timetofailure
【摘要】:Thedataobtainedbythistestmethodareusefulforestablishingpressure,orhoopstresswhereapplicable,versusfailure-timerelationships,underindependentlycontrolledinternalandexternalenvironmentsthatsimulateactualanticipatedproductend-useconditions,fromwhichthedesignbasis(DB)forpipingproductsormaterials,orboth,canbedetermined.(RefertoTestMethodD2837andPracticeD2992,andAppendixX1ofthistestmethod.)Note38212;Referencetodesignbasis(DB)inthistestmethodreferstothehydrostaticdesignbasis(HDB)formaterialinstraighthollowcylindricalshapeswherehoopstresscanbeeasilycalculated,orisbasedonappliedpressuredesignbasis(PDB)forcomplex-shapedproductsorsystemswherecomplexstressfieldsseriouslyprohibittheuseofhoopstress.Inordertocharacterizeplasticsaspipingproducts,itisnecessarytoestablishthestress-to-rupture-time,orpressure-to-rupture-timerelationshipsovertwoormorelogarithmicdecadesoftime(hours)withincontrolledenvironmentalparameters.Becauseofthenatureofthetestandspecimensemployed,nosinglelinecanadequatelyrepresentthedata.Therefore,theconfidencelimitsshouldbeestablished.Resultsobtainedatonesetofenvironmentalconditionsshouldnotbeusedforotherconditions,exceptthathighertemperaturedatacanbeusedforadesignbasisassignmentforlowerapplicationtemperatures,providedthatitcanbedemonstratedthattheapplicationconditionspresentalessstringentenvironment.Thedesignbasisshouldbedeterminedforeachspecificplasticmaterialandeachdifferentsetofenvironmentalconstraints.Designandprocessingcansignificantlyaffectthelong-termperformanceofpipingproducts,andthereforeshouldbetakenintoconsiderationduringanyevaluation(seeAppendixX2).Specimensusedmustberepresentativeofthepipingproductormaterialunderevaluation(seeAppendixX2).1.1Thistestmethodcoversthedeterminationofthetime-to-failureofplasticpipingproductsunderconstantinternalpressureandflow.1.2Thistestmethodprovidesamethodofcharacterizingplasticsintheformofpipe,components,andsystemsunderanyreasonablecombinationofinternalandexternaltemperaturesandenvironments,undertheproceduresdescribed.1.3Thistestmethodcanbeusedtocharacterizethetestedplasticmaterialsorproducts,orboth,onthebasisofpressure-,orstress-rupturedatadevelopedundertheconditionsprescribed.1.4Thevaluesstatedininch-poundunitsaretoberegardedasthestandard.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:J20
【国际标准分类号】:23_040_20
【页数】:6P.;A4
【正文语种】:
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