ANSI T1.610a-1998 电信.ISDN补充服务控制的通用程序.改动姓名地址号码的信息元素的更改
时间:2024-05-21 07:21:01 来源: 标准资料网 作者：标准资料网 阅读：8893
【英文标准名称】:Telecommunications-GenericProceduresfortheControlofISDNSupplementaryServices-ModificationtotheRedirectingNumberInformationElement
【原文标准名称】:电信.ISDN补充服务控制的通用程序.改动姓名地址号码的信息元素的更改
【标准号】:ANSIT1.610a-1998
【标准状态】:现行
【国别】:美国
【发布日期】:1998
【实施或试行日期】:
【发布单位】:美国国家标准学会(US-ANSI)
【起草单位】:ATIS
【标准类型】:()
【标准水平】:()
【中文主题词】:入口控制;检验;通信网;数字连接;综合服务数字网络;综合业务数字网;网络互连;网络接口;补充业务;电信
【英文主题词】:Accesscontrols;Checks;Communicationnetworks;Digitalconnections;Integratedservicesdigitalnetwork;ISDN;Networkinterconnection;Networkinterfaces;Supplementaryservices;Telecommunications
【摘要】:ThissupplementtoAmericanNationalStandardforTelecommunications-GenericProceduresfortheControlofISDNSupplementaryServices,ANSIT1.610-1998,revisesthestandardtoimproveandclarifythestandardbasedonrelatedadvancesinotherstanda
【中国标准分类号】:M11
【国际标准分类号】:33_080
【页数】:
【正文语种】:英语
【英文标准名称】:StandardTestMethodforMeasurementofFractureToughness
【原文标准名称】:断裂韧性测定的标准试验方法
【标准号】:ASTME1820-2009e1
【标准状态】:现行
【国别】:美国
【发布日期】:2009
【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】:E08.07
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:crackinitiation;crack-tipopeningdisplacement;CTOD;ductilefracture;elastic-plasticfracturetoughness;fractureinstability;J-integral;KIc;plane-strainfracturetoughness;resistancecurve;stablecrackgrowth;Crack-tipope
【摘要】:Assumingthepresenceofapreexisting,sharp,fatiguecrack,thematerialfracturetoughnessvaluesidentifiedbythistestmethodcharacterizeitsresistanceto:(1)fractureofastationarycrack,(2)fractureaftersomestabletearing,(3)stabletearingonset,and(4)sustainedstabletearing.Thistestmethodisparticularlyusefulwhenthematerialresponsecannotbeanticipatedbeforethetest.ApplicationofproceduresinTestMethodE1921isrecommendedfortestingferriticsteelsthatundergocleavagefractureintheductile-to-brittletransition.Thesefracturetoughnessvaluesmayserveasabasisformaterialcomparison,selection,andqualityassurance.Fracturetoughnesscanbeusedtorankmaterialswithinasimilaryieldstrengthrange.Thesefracturetoughnessvaluesmayserveasabasisforstructuralflawtoleranceassessment.Awarenessofdifferencesthatmayexistbetweenlaboratorytestandfieldconditionsisrequiredtomakeproperflawtoleranceassessment.Thefollowingcautionarystatementsarebasedonsomeobservations.Particularcaremustbeexercisedinapplyingtostructuralflawtoleranceassessmentthefracturetoughnessvalueassociatedwithfractureaftersomestabletearinghasoccurred.Thisresponseischaracteristicofferriticsteelinthetransitionregime.Thisresponseisespeciallysensitivetomaterialinhomogeneityandtoconstraintvariationsthatmaybeinducedbyplanargeometry,thicknessdifferences,modeofloading,andstructuraldetails.TheJ-Rcurvefrombend-typespecimensrecommendedbythistestmethod(SE(B),C(T),andDC(T))hasbeenobservedtobeconservativewithrespecttoresultsfromtensileloadingconfigurations.Thevaluesofx03B4;c,x03B4;u,Jc,andJumaybeaffectedbyspecimendimensions.1.1Thistestmethodcoversproceduresandguidelinesforthedeterminationoffracturetoughnessofmetallicmaterialsusingthefollowingparameters:K,J,andCTOD(x03B4;).ToughnesscanbemeasuredintheR-curveformatorasapointvalue.Thefracturetoughnessdeterminedinaccordancewiththistestmethodisfortheopeningmode(ModeI)ofloading.1.2Therecommendedspecimensaresingle-edgebend,[SE(B)],compact,[C(T)],anddisk-shapedcompact,[DC(T)].Allspecimenscontainnotchesthataresharpenedwithfatiguecracks.1.2.1Specimendimensional(size)requirementsvaryaccordingtothefracturetoughnessanalysisapplied.Theguidelinesareestablishedthroughconsiderationofmaterialtoughness,materialflowstrength,andtheindividualqualificationrequirementsofthetoughnessvaluepervaluessought.1.3ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Note18212;OtherstandardmethodsforthedeterminationoffracturetoughnessusingtheparametersK,J,andCTODarecontainedinTestMetho......
【中国标准分类号】:H22
【国际标准分类号】:77_040_10
【页数】:49P.;A4
【正文语种】:英语
【英文标准名称】:Ski-polesforalpineskiing-Requirementsandtestmethods.
【原文标准名称】:高山滑雪用滑雪杖的要求和试验方法.
【标准号】:NFS52-701-2011
【标准状态】:现行
【国别】:法国
【发布日期】:2011-09-01
【实施或试行日期】:2011-09-30
【发布单位】:法国标准化协会(FR-AFNOR)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:Alpineskis;Design;Dimensions;Marking;Materials;Minimumrequirements;Safetyengineering;Safetyrequirements;Skipoles;Skiing;Skis;Specification(approval);Specifications;Sportsequipment;Symbols;Terms;Testing;Testingconditions;Units;Wintersportsequipment
【摘要】:
【中国标准分类号】:Y56
【国际标准分类号】:97_220_20
【页数】:21P;A4
【正文语种】:其他