【英文标准名称】:Railwayapplications-Structuralrequirementsofrailwayvehiclebodies-Part1:locomotivesandpassengerrollingstock(andalternativemethodforfreightwagons).
【原文标准名称】:铁路应用设施.铁路车辆车体的结构要求.第1部分:机车和客运全部车辆(货运的替代方法)
【标准号】:NFF17-001-1-2010
【标准状态】:现行
【国别】:法国
【发布日期】:2010-05-01
【实施或试行日期】:2010-05-28
【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】:客车;定义;设计;尺寸选定;疲劳;压缩力;检验;载荷情况;负荷测量;负荷;机车;材料;材料数据;数学计算;无动力铁路车辆;铁路设施;铁路车辆零部件;铁道车辆;铁路货运车辆;铁路;规范(验收);稳定性;静荷载;材料强度;强度性能;应力;拉伸强度;试验;牵引力;证实;验证;运货车
【英文主题词】:Coaches;Definitions;Design;Dimensioning;Fatigue;Forceofpressure;Inspection;Loadcases;Loadmeasurement;Loading;Locomotives;Materials;Materialsdata;Mathematicalcalculations;Non-poweredrailwayvehicles;Railwayapplications;Railwayvehiclecomponents;Railwayvehicles;Railwaywagons;Railways;Specification(approval);Stability;Staticloading;Strengthofmaterials;Strengthproperties;Stress;Tensilestrength;Testing;Tractiveforce;Validation;Verification;Waggonboxes
【摘要】:
【中国标准分类号】:S50
【国际标准分类号】:45_060_20
【页数】:37P;A4
【正文语种】:其他


【英文标准名称】:StandardTestMethodforNanosecondEventDetectionforElectricalContactsandConnectors
【原文标准名称】:电触点和电连接器用毫微秒事件探测标准试验方法
【标准号】:ASTMB878-1997(2009)
【标准状态】:现行
【国别】:
【发布日期】:1997
【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】:B02.11
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:事件探测;毫微秒事件;毫微秒间隙;连接器;电触点材料;毫微秒事件探测
【英文主题词】:eventdetection;nanosecondevents;nanosecondintermittences;Connectors;Electricalcontactmaterials;Nanosecondeventdetection
【摘要】:Thetestsinthistestmethodaredesignedtoassesstheresistancestabilityofelectricalcontactsorconnections.Thedescribedproceduresareforthedetectionofeventsthatresultfromshortduration,high-resistancefluctuations,orofvoltagevariationsthatmayresultinimpropertriggeringofhighspeeddigitalcircuits.Inthoseprocedures,thetestcurrentsare100mA(x00B1;20mA)whenthetestsamplehasaresistancebetween0and10x03A9;.Sincetheminimumresistancechangerequiredtoproduceanevent(definedin3.2.1)isspecifiedas10x03A9;(see1.3),thevoltageincreaserequiredtoproducethiseventmustbeatleast1.0V.Thedetectionofnanosecond-durationeventsisconsiderednecessarywhenanapplicationissusceptibletonoise.However,theseproceduresarenotcapableofdeterminingtheactualdurationoftheeventdetected.Theintegrityofnanosecond-durationsignalscanonlybemaintainedwithtransmissionlines;therefore,contactsinseriesareconnectedtoadetectorchannelthroughcoaxialcable.Thedetectorwillindicatewhentheresistancemonitoredexceedstheminimumeventresistanceformorethanthespecifiedduration.Thetestconditiondesignationcorrespondingtoaspecificminimumeventdurationof1,10,or50nsislistedinTable1.Theseshallbespecifiedinthereferencingdocument.TABLE1TestConditionDesignationsforSpecificMinimumEventDurationsTestConditionEventDuration,min
A
1nanosecond
B
10nanoseconds
C
50nanoseconds