BS 3S 70-1964 航空材料规范.55号碳钢(正火的)(45/55吨力/平方英寸限定等圆断面4英寸)

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【英文标准名称】:Specificationforaircraftmaterial.'55'carbonsteel(normalized)(45/55tonf/sqin:limitingrulingsection4in)
【原文标准名称】:航空材料规范.55号碳钢(正火的)(45/55吨力/平方英寸限定等圆断面4英寸)
【标准号】:BS3S70-1964
【标准状态】:作废
【国别】:英国
【发布日期】:1964-01-31
【实施或试行日期】:
【发布单位】:英国标准学会(BSI)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:棒材;材料的机械性能;抗拉强度;高碳钢;非合金钢;锻件;坯锭;热处理;航空运输工程;硬度;钢;化学成分;名称与符号
【英文主题词】:
【摘要】:
【中国标准分类号】:V11
【国际标准分类号】:49_025_10
【页数】:6P;A4
【正文语种】:英语


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【英文标准名称】:MEDICALANDSURGICALEQUIPMENT.IMPLANTSFORSURGERY.FORGEABLEANDCOLDFORMEDCOBALTBASEDALLOY.
【原文标准名称】:外科医疗器械.外科植入物.金属制品.钴基冷成型锻造合金
【标准号】:NFS90-403-1983
【标准状态】:作废
【国别】:法国
【发布日期】:1983-04
【实施或试行日期】:1983-03-07
【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】:
【英文主题词】:
【摘要】:
【中国标准分类号】:C35
【国际标准分类号】:
【页数】:3P;A4
【正文语种】:其他


【英文标准名称】:StandardTestMethodforDeterminingInSituModulusofDeformationofRockUsingDiametricallyLoaded76-mm(3-in.)BoreholeJack
【原文标准名称】:用径向加载76mm(3in)钻孔顶出装置测量岩石变型模量的标准试验方法
【标准号】:ASTMD4971-2008
【标准状态】:现行
【国别】:美国
【发布日期】:2008
【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】:D18.12
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:anisotropy;boreholedrilling;deformation;displacement;jacktest;loadingtests;modulusofdeformation;orientation;pressuretesting;rock;Boreholedrilling;Deformation--rock;Displacement--rockenvironments;Jacktest;Loadingtests--rock/related
【摘要】:Resultsofthistestmethodareusedtopredictdisplacementsinrockmasscausedbyloadsfromastructureorfromundergroundconstruction.Itisoneofseveralteststhatshouldbeperformed.Becausethejackcanapplydirectedloads,thistestmethodcanbeperformedtoprovideanestimateofanisotropy.Intheory,theanalysisoftestdataisstraightforward;themodulusestimaterequiresarecordofappliedhydraulicpressureversusboreholediameterchange,andaknowledgeoftherock''sPoisson''sratio.Inpractice,theaboveprocedure,usingtheoriginaltheoreticalformula,frequentlyhasresultedincomputingamaterialmodulusthatwasdemonstrablytoolow.Foranalyzingthetestdataitisassumedthattherockmassislinearlyelastic,isotropic,andhomogeneous.Withintheseassumptions,thistestmethodcanprovideusefuldataforrockmassesforwhichequivalentcontinuouspropertiescannotbefoundorestimated.Note18212;Notwithstandingthestatementsonprecisionandbiascontainedinthistestmethod;theprecisionofthistestmethodisdependentonthecompetenceofthepersonnelperformingit,andthesuitabilityoftheequipmentandfacilitiesused.AgenciesthatmeetthecriteriaofPracticeD3740aregenerallyconsideredcapableofcompetentandobjectivetesting.UsersofthistestmethodarecautionedthatcompliancewithPracticeD3740doesnotinitselfassurereliabletesting.Reliabletestingdependsonmanyfactors;PracticeD3740providesameansofevaluatingsomeofthosefactors.1.1Thistestmethodcoverstheestimationofinsitumodulusofarockmassatvariousdepthsandorientations.Informationontime-dependentdeformationmayalsobeobtained.1.2AllobservedandcalculatedvaluesshallconformtotheguidelinesforsignificantdigitsandroundingestablishedinPracticeD6026.1.2.1Themethodusedtospecifyhowdataarecollected,calculated,orrecordedinthisstandardisnotdirectlyrelatedtotheaccuracytowhichthedatacanbeappliedindesignorotheruses,orboth.Howoneappliestheresultsobtainedusingthisstandardisbeyonditsscope.1.3ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesaremathematicalconversionstoinch-poundunitsthatareprovidedforinformationonlyandarenotconsideredstandard.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:P13
【国际标准分类号】:93_020
【页数】:7P.;A4
【正文语种】:英语