ASTM B 863-2002 钛和钛合金线材的标准规范
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【英文标准名称】:StandardSpecificationforTitaniumandTitaniumAlloyWire
【原文标准名称】:钛和钛合金线材的标准规范
【标准号】:ASTMB863-2002
【标准状态】:作废
【国别】:美国
【发布日期】:2002
【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】:钛;金属线;钛合金
【英文主题词】:wires;titaniumalloys;titanium
【摘要】:
【中国标准分类号】:H64
【国际标准分类号】:77_150_50
【页数】:5P;A4
【正文语种】:英语
【英文标准名称】:MeasurementofDispersionPowerPenaltyinDigitalSingle-ModeSystems
【原文标准名称】:在数字单模系统中色散能力损失的测量
【标准号】:ANSI/TIA/EIA526-10-1993
【标准状态】:现行
【国别】:美国
【发布日期】:1993
【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】:
【标准类型】:()
【标准水平】:()
【中文主题词】:电信;电子工程;色散
【英文主题词】:telecommunications;electronicengineering;dispersion
【摘要】:Providestestprocedurestomeasurethedispersion(ps/nm)thatthesystemisdesignedtoaccommodateasspecifiedbythemanufacturer.
【中国标准分类号】:M33
【国际标准分类号】:33_040_99
【页数】:
【正文语种】:英语
【英文标准名称】:StandardTestMethodforVehicleCrashTestingofPerimeterBarriers
【原文标准名称】:环形物障的车辆撞击测试的标准试验方法
【标准号】:ASTMF2656-2007
【标准状态】:现行
【国别】:
【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(US-ASTM)
【起草单位】:F12.10
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:物障;碰撞;撞击;维修;周长;道路车辆;试验设备;测试;运载工具
【英文主题词】:anti-rambarriers;anti-terroristbarriers;berms;bollards;continuousbarriers;ditches;fixedbarriers;fixed-widthbarriers;freestandingbarriers;netbarriers;operablebarriers;perimeterbarriers;perimetergates;planterbarriers;platebarriers;
【摘要】:Thistestmethodprovidesastructuredproceduretoestablishapenetrationratingforperimeterbarrierssubjectedtoavehicleimpact.Knowingthepenetrationratingprovidestheabilitytoselectanappropriatebarrierforsite-specificconditionsaroundafacility.Thebarrierpenetrationratingdoesnotimplythatabarrierwillperformasratedinallsiteconditions,approachroutes,andtopography.Also,onlysingle-specimentestsataspecifiedimpactlocationarerequiredbythistestmethod,andtherefore,notallpointsofimpactcanbetestedandvalidatedforthepenetrationrating.Otherimpactlocationsmayresponddifferently.1.1Thistestmethodprovidesarangeofvehicleimpactconditions,designations,andpenetrationperformancelevels.Thiswillallowanagencytoselectpassiveperimeterbarriersandactiveentrypointbarriersappropriateforuseatfacilitieswithadefinedmovingvehiclethreat.Agenciesmayadoptandspecifythoseconditiondesignationsandperformancelevelsinthistestmethodthatsatisfytheirspecificneeds.Agenciesmayalsoassigncertificationratingsforactiveandpassiveperimeterbarriersbasedonthetestsandtestmethodologiesdescribedherein.Manytestparametersarestandardizedtoarriveatacommonvehicletypeandmass,enhancetestrealismandreplication,andproduceuniformratingdesignations.1.2Compliancewiththesetestproceduresestablishesameasureofperformancebutdoesnotrenderanyperimeterbarrierinvulnerabletovehiclepenetration.Cautionshouldbeexercisedininterpretingtestfindingsandinextrapolatingresultstootherthantestconditions.Whilecomputersimulationsarepowerfultoolsthatareusefulinthedevelopmentofnewandimprovedbarriersorinestimatingperformanceunderdifferingconditions,useofonlytheresultsfromcomputersimulationforfieldingaproductisstronglydiscouraged.Whenperformingatest,developersandusersareencouragedtoaddressspecificorunusualsiteconditionsasneeded.Oftenlocalterrainfeatures,soilconditions,climate,orotheritemswilldictatespecialneedsatspecificlocations.Therefore,ifsiteconditionsarelikelytodegradeabarriersperformance,theagencyinneedofaperimeterbarriershouldrequiretestingwiththespecificsiteconditionsreplicatedforfull-scalecrashtesting.1.3Product/designcertificationunderthistestmethodonlyaddressestheabilityofthebarriertowithstandtheimpactofthetestvehicle.Itdoesnotrepresentanendorsementoftheproduct/designoraddressitsoperationalsuitability.1.4ThevaluesinSIunitsaretoberegardedasthestandard.Thevaluesshowninparenthesesareforinformationonly.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesandtodeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:T04
【国际标准分类号】:43_180
【页数】:16P.;A4
【正文语种】:
