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【英文标准名称】:Steelpipes;designofsteelpressurepipes
【原文标准名称】:钢管.抗内压钢管壁厚计算
【标准号】:DIN2413-1936
【标准状态】:作废
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【发布单位】:德国标准化学会(DE-DIN)
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【标准类型】:()
【标准水平】:()
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【英文标准名称】:StandardPracticeforAcousto-UltrasonicAssessmentofFilament-WoundPressureVessels
【原文标准名称】:丝绕制高压容器的超声波评定用标准实施规程
【标准号】:ASTME1736-2005
【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】:E07.04
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:实施规程;声学测量;丝;超声波学;超声检验;无损检验;压力容器
【英文主题词】:acousticemission;acousto-ultrasonics;fiberreinforcedcomposites;filament-woundpressurevessels;nondestructiveevaluation;nondestructivetesting
【摘要】:TheAUmethodshouldbeconsideredforvesselsthatareproventobefreeofmajorflawsordiscontinuitiesasdeterminedbyconventionaltechniques.TheAUmethodmaybeusedfordetectingmajorflawsifothermethodsaredeemedimpractical.Itisimportanttousemethodssuchasimmersionpulse-echoultrasonics(PracticeE1001)andacousticemission(PracticeE1067)toascertainthepresenceofmajorflawsbeforeproceedingwithAU.TheAUmethodisintendedalmostexclusivelyformaterialscharacterizationbyassessingthecollectiveeffectsofdisperseddefectsandsubcriticalflawpopulations.ThesearematerialaberrationsthatinfluenceAUmeasurementsandalsounderliemechanicalpropertyvariations,dynamicloadresponse,andimpactandfractureresistance.6TheAUmethodcanbeusedtoevaluatelaminatequalityusingaccesstoonlyonesurface,theusualconstraintimposedbyclosedpressurevessels.Forbestresults,theAUprobesmustbefixturedtomaintaintheprobeorientationatnormalincidencetothecurvedsurfaceofthevessel.Giventheseconstraints,thispracticedescribesaprocedureforautomatedAUscanningusingwatersquirterstoassesstheserviceabilityandreliabilityoffilament-woundpressurevessels.71.1Thispracticecoversaprocedureforacousto-ultrasonic(AU)assessmentoffilament-woundpressurevessels.Guidelinesaregivenforthedetectionofdefectstatesandflawpopulationsthatariseduringmaterialsprocessingormanufacturingoruponexposuretoaggressiveserviceenvironments.Althoughthispracticedescribesanautomatedscanningmode,similarresultscanbeobtainedwithamanualscanningmode.1.2ThisprocedurerecommendstechnicaldetailsandrulesforthereliableandreproducibleAUdetectionofdefectstatesandflawpopulations.TheAUproceduredescribedhereincanbeabasisforassessingtheserviceabilityoffilament-woundpressurevessels.1.3TheobjectiveoftheAUmethodisprimarilytheassessmentofdefectstatesanddiffuseflawpopulationsthatinfluencethemechanicalstrengthandultimatereliabilityoffilament-woundpressurevessels.TheAUapproachandprobeconfigurationaredesignedspecificallytodeterminecompositepropertiesinlateralratherthanthrough-the-thicknessdirections.1.4TheAUmethodisnotforflawdetectionintheconventionalsense.TheAUmethodismostusefulformaterialscharacterization,asexplainedinGuideE1495,whichgivestherationaleandbasictechnologyfortheAUmethod.Flawsanddiscontinuitiessuchaslargevoids,disbonds,orextendedlackofcontactofinterfacescanbefoundbyothernondestructiveexamination(NDE)methodssuchasimmersionpulse-echoultrasonics.1.5ThevaluesstatedinSIunitsaretoberegardedasthestandard.1.6Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:J74
【国际标准分类号】:19_100
【页数】:5P.;A4
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