ISO 12162-1995 压力用热塑性塑料管材和管件分级和命名总体使用(设计)系数
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【英文标准名称】:Thermoplasticsmaterialsforpipesandfittingsforpressureapplications-Classificationanddesignation-Overallservice(design)coefficient
【原文标准名称】:压力用热塑性塑料管材和管件分级和命名总体使用(设计)系数
【标准号】:ISO12162-1995
【标准状态】:作废
【国别】:国际
【发布日期】:1995-06
【实施或试行日期】:
【发布单位】:国际标准化组织(IX-ISO)
【起草单位】:ISO/TC138
【标准类型】:()
【标准水平】:()
【中文主题词】:压力管;系数;热固性聚合物;热塑性聚合物;材料;分类;作标记;配件;数学计算;塑料管;管
【英文主题词】:Classification;Coefficients;Definitions;Designations;Fittings;Hydrostaticpressure;Marking;Materialparameters;Materials;Mathematicalcalculations;Pipecouplings;Pipes;Plasticpipes;Plastics;Pressurepipes;Pressureresistance;Thermoplasticpolymers;Thermosettingpolymers
【摘要】:Establishestheclassificationofthermoplasticsmaterialsinpipeformandspecifiesthematerialdesignation.Alsogivesamethodforcalculatingthedesignstress.Appliestomaterialsintendedforpipesand/orfittingsforpressureapplications.
【中国标准分类号】:G31
【国际标准分类号】:23_040_20;23_040_45
【页数】:3P;A4
【正文语种】:英语
【英文标准名称】:StandardSpecificationforTypePSMPoly(VinylChloride)(PVC)SDR51andSDR64SewerPipeandFittings
【原文标准名称】:PSM型聚氯乙烯(PVC)SDR51和SDR64排水管及配件的标准规范
【标准号】:ASTMF2658-2007
【标准状态】:现行
【国别】:美国
【发布日期】:2007
【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】:抗冲击(强度);作标记;管道配件;管道;管;塑料制品;聚氯乙烯;污水工程;下水道;规范(验收);测试
【英文主题词】:Impactresistance;Marking;Pipefittings;Pipelines;Pipes;Plasticsproducts;Polyvinylchloride;Sewerage;Sewers;Specification(approval);Testing
【摘要】:
【中国标准分类号】:Q81
【国际标准分类号】:23_040_20
【页数】:10P;A4
【正文语种】:英语
【英文标准名称】:StandardTestMethodforYoung'sModulus,ShearModulus,andPoisson'sRatioforGlassandGlass-CeramicsbyResonance
【原文标准名称】:用共振现象对玻璃和玻璃陶瓷材料的杨氏模量、剪切模量及泊松比的标准试验方法
【标准号】:ASTMC623-1992(2005)
【标准状态】:作废
【国别】:
【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】:C14.04
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:玻璃;弹性模量;剪切模量;共振;泊松比;陶瓷;试验
【英文主题词】:glass;Poisson'sratio;resonance;shearmodulus;Young'smodulus
【摘要】:Thistestsystemhasadvantagesincertainrespectsovertheuseofstaticloadingsystemsinthemeasurementofglassandglass-ceramics:3.1.1Onlyminutestressesareappliedtothespecimen,thusminimizingthepossibilityoffracture.3.1.2Theperiodoftimeduringwhichstressisappliedandremovedisoftheorderofhundredsofmicroseconds,makingitfeasibletoperformmeasurementsattemperatureswheredelayedelasticandcreepeffectsproceedonamuch-shortenedtimescale,asinthetransformationrangeofglass,forinstance.Thetestissuitablefordetectingwhetheramaterialmeetsspecifications,ifcognizanceisgiventooneimportantfact:glassandglass-ceramicmaterialsaresensitivetothermalhistory.Thereforethethermalhistoryofatestspecimenmustbeknownbeforethemodulicanbeconsideredintermsofspecifiedvalues.Materialspecificationsshouldincludeaspecificthermaltreatmentforalltestspecimens.FIG.1BlockDiagramofApparatus1.1Thistestmethodcoversthedeterminationoftheelasticpropertiesofglassandglass-ceramicmaterials.Specimensofthesematerialspossessspecificmechanicalresonancefrequencieswhicharedefinedbytheelasticmoduli,density,andgeometryofthetestspecimen.Thereforetheelasticpropertiesofamaterialcanbecomputedifthegeometry,density,andmechanicalresonancefrequenciesofasuitabletestspecimenofthatmaterialcanbemeasured.Young'smodulusisdeterminedusingtheresonancefrequencyintheflexuralmodeofvibration.Theshearmodulus,ormodulusofrigidity,isfoundusingtorsionalresonancevibrations.Young'smodulusandshearmodulusareusedtocomputePoisson'sratio,thefactoroflateralcontraction.1.2Allglassandglass-ceramicmaterialsthatareelastic,homogeneous,andisotropicmaybetestedbythistestmethod.Thetestmethodisnotsatisfactoryforspecimensthathavecracksorvoidsthatrepresentinhomogeneitiesinthematerial;neitherisitsatisfactorywhenthesematerialscannotbepreparedinasuitablegeometry.Elasticheremeansthatanapplicationofstresswithintheelasticlimitofthatmaterialmakingupthebodybeingstressedwillcauseaninstantaneousanduniformdeformation,whichwillceaseuponremovalofthestress,withthebodyreturninginstantlytoitsoriginalsizeandshapewithoutanenergyloss.Glassandglass-ceramicmaterialsconformtothisdefinitionwellenoughthatthistestismeaningful.Note1Isotropicmeansthattheelasticpropertiesarethesameinalldirectionsinthematerial.Glassisisotropicandglass-ceramicsareusuallysoonamacroscopicscale,becauseofrandomdistributionandorientationofcrystallites.1.3Acryogeniccabinetandhigh-temperaturefurnacearedescribedformeasuringtheelasticmoduliasafunctionoftemperaturefrom195Cto1200C.1.4Modificationofthetestforuseinqualitycontrolispossible.Arangeofacceptableresonancefrequenciesisdeterminedforapiecewithaparticulargeometryanddensity.Anyspecimenwithafrequencyresponsefallingoutsidethisfrequencyrangeisrejected.Theactualmodulusofeachpieceneednotbedeterminedaslongasthelimitsoftheselectedfrequencyrangeareknowntoincludetheresonancefrequencythatthepiecemustpossessifitsgeometryanddensityarewithinspecifiedtolerances.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:Q30
【国际标准分类号】:81_040_30;81_060_01
【页数】:7P.;A4
【正文语种】:
