BS C 18-1976 航空用管道和导管用V形法兰联结器规范.公制系列
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【英文标准名称】:SpecificationforV-flangecouplingsforaircraftpipingandducting-metricseries
【原文标准名称】:航空用管道和导管用V形法兰联结器规范.公制系列
【标准号】:BSC18-1976
【标准状态】:作废
【国别】:英国
【发布日期】:1976-08-31
【实施或试行日期】:1976-08-31
【发布单位】:英国标准学会(GB-BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:飞行器部件;管接头;V形;管联接器;航空运输工程;管道配件;导管;法兰管件;直径;管;法兰;尺寸;设计
【英文主题词】:Aircraft;Dimensions;Electricalequipment;Flanges;Pipefittings;Pipelines
【摘要】:ThisBritishStandardspecifiesthedimensionsforthreebasicexternalprofiles(types1,2and3respectively)forflangesforV-flangecouplingsusedinaircraftforthepurposeofcouplingcomponentstopiping/ductingoreffectingjointsinpiping/ducting.Italsospecifiesastandardrangeofflangeoutsidediametersforeachprofiletypeasfollows.Type1.Solidprofile44.45mmto222.25mmdiameterType2.Solidprofile;large239.47mmto379.17mmdiameterdiameter/lowpressureType3.Rolledflangeprofile39.42mmto219.48mmdiameterInaddition,thebasicrequirementsfortheassociatedcouplingsclampsareincluded.
【中国标准分类号】:V38
【国际标准分类号】:49_080
【页数】:8P.;A4
【正文语种】:英语
【英文标准名称】:StandardPracticeforCalibrationofSystemsUsedforMeasuringVehicularResponsetoPavementRoughness
【原文标准名称】:道路粗糙度对车辆影响的测量系统的校正的标准方法
【标准号】:ASTME1448/E1448M-2009
【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】:E17.31
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:
【英文主题词】:calibration;response-typesystem;roadroughness;Calibration--pavementtestinganalysisinstrumentation;Passengercars;Responsefactors;Roadroughness
【摘要】:Measuresobtainedbyaresponse-typesystemdependprimarilyonthevehicledesignandcondition,theload,themeasuringspeed,andahostofenvironmentalconditions.Evenwithcontrolofallsignificantvariables,theresponseofeveryvehicleisunique.Thus,rawmeasuresfromsuchasystemarenotreproduciblewithothersystems.Thecalibrationdescribedinthispracticeprovidesamethodforconvertingtherawoutputofaparticularresponse-typesystemtoareproduciblestandardroughnessscale.Theresponseofavehicletoroadroughnessisacomplexphenomenonthatcannotbesummarizedinalaboratorytest.Therefore,thecalibrationismadethroughcorrelationwithstandardroughnessindexvaluesestablishedforcalibrationsitessituatedonrepresentativeroads.ThedatafromthecalibrationsitesareanalyzedtodetermineanequationtoestimatethestandardroughnessindexfromanRTSN.TheestimateofthestandardroughnessindexmadebytransforminganRTSNissubjecttothreetypesoferror:RandomErroroftheResponse-Type-System(Repeatability)8212;Thiserrorincludesoperatorerrorandvariabilityintheresponseofthevehicleandothercomponentsoftheresponse-typesystem.Itcanbereducedbyperformingrepeatedmeasurementswiththeresponse-typesystemandaveragingtheindividualmeasurementstoestimatethetrueRTSNforasite.AppendixX1describesatestmethodfordeterminingthemagnitudeofin-userepeatabilityerror.Note18212;Thelengthofthesiteorsitesusedtoestimatein-userepeatabilityshallbeequaltotheminimumlengthofthetestsectionstobesurveyedbytheresponse-typesystem.Thismayrequiretestsitesthatarelongerthanthoseprofiledforthecalibration.BiasErrorintheCalibrationEquation8212;Estimatesofthestandardroughnessindexarebiasedifthecalibrationequationisincorrectorifnocalibrationequationisused.Thepurposeofthisstandardpracticeistoreducebiastoanegligiblelevel.Ifdesired,themagnitudeofbiasremainingaftercalibrationcanbeestimatedfromdatacollectedinthecalibration.StandardErroroftheEstimate(ErrorDuetoInteractionsBetweenSiteEffectsandResponse-TypeSystemEffects)8212;Thiserrorisconstant(abias)foraparticularcombinationofresponse-typesystemandsite,butitisrandomwithsiteselection.Ultimatelyitlimitstheaccuracyoftheestimateofthestandardroughnessofasitemadewitharesponse-typesystem.Theerrorcanbeestimatedfromdatacollectedinthecalibration.Thestandarderroroftheestimateestimatestheerrorduetophysicaldifferencesinresponsebetweenaparticularresponse-typesystemandthestandardroughnessindex.Itcannotbereducedbyamathematicaltransform.Threephysicalvariablesthatarecontrollableandthatinfluencethestandarderroroftheestimatearevehicletestspeed,shockabsorberdampingstiffness,andvehicletirepressure.Formostvehicles,maximumreproducibilityofstandardroughnessindexestimatesisobtainedbyadoptingatestspeedof80km/h[50mph],byequippingthevehiclewithstiffshockabsorbers,andbymaintainingastandardtirepressure.(Seealso8.2.)Periodicverificationisessentialtoensurethatthecalibrationremainsvalid.1.1Thispracticedescribesequipmentandproceduresforthecalibrationofsystemsusedformeasuringvehicularresponsetopavementroughness.Suchsystemsarereferredtoasresponse-typesystems.(SeeTestMethodE1082.)1.2Theresponse-typesystemincl......
【中国标准分类号】:R86
【国际标准分类号】:93_080_20
【页数】:9P.;A4
【正文语种】:英语
基本信息
| 标准名称： | 高冰镍化学分析方法 丁二酮肟重量法测定镍量 |
| 中标分类： |
冶金 >>
金属化学分析方法 >>
重金属极其合金分析方法 |
| 替代情况： | 替代原标准号GB 5194.1-85;被YS/T 252.1-2007代替 |
| 发布日期： | |
| 实施日期： | 1993-01-01 |
| 首发日期： | |
| 作废日期： | 2007-10-01 |
| 出版社： | 中国标准出版社 |
| 出版日期： | |
| 页数： | 4页 |
适用范围
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前言
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引用标准
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所属分类： 冶金 金属化学分析方法 重金属极其合金分析方法
