【英文标准名称】:EquipmentEngineering(EE)-Environmentalconditionsandenvironmentaltestsfortelecommunicationsequipment-Part2-7:Specificationofenvironmentaltests;Portableandnon-stationaryuse(EndorsementoftheEnglishversionEN300019-2-7V3.0.0(2002-
【原文标准名称】:设备工程(EE).电信设备的环境条件和环境试验.第2-7部分:环境试验规范.便携设备和非固定使用设备
【标准号】:EN300019-2-7-2002
【标准状态】:现行
【国别】:
【发布日期】:2004-03
【实施或试行日期】:
【发布单位】:欧洲标准学会(EN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:环境影响;设备配置;仪器工艺;环境条件;试验;极限(数学);电气工程;应用;通信;便携的;气候试验;通信设备;环境试验;易动的;定义;仪器;环境;分类;耐力
【英文主题词】:Classification;Climatictests;Communicationequipment;Definition;Definitions;Deviceconfiguration;Electricalengineering;Environment;Environmentalconditions;Environmentaleffects;Environmentaltesting;Instrumenttechnology;Instruments;Limits(mathematics);Mobile;Portable;Resistance;Telecommunication;Telecommunications;Testing;Tests;Use
【摘要】:
【中国标准分类号】:M04
【国际标准分类号】:33_050_01
【页数】:2P.;A4
【正文语种】:英语


【英文标准名称】:Toughnessofchainsteels
【原文标准名称】:链条钢的韧性
【标准号】:ISO/TR23602-2005
【标准状态】:现行
【国别】:国际
【发布日期】:2005-07
【实施或试行日期】:
【发布单位】:国际标准化组织(ISO)
【起草单位】:ISO/TC111
【标准类型】:()
【标准水平】:()
【中文主题词】:化学成分;抗拉试验;材料;提升设备;钢链条;圆钢链条;热处理;韧性;链条;断裂韧性;钢;链式吊索
【英文主题词】:chainslings;liftingequipment;steelchains;fracturetoughness;tensiletests;steels;chemicalcomposition;chains;roundsteelchains;heattreatment;materials;toughness
【摘要】:TheobjectiveoftheinvestigationpresentedinthisTechnicalReportwastoquantifytherequiredmaterialtoughnessfortheoperationalsafetyofroundsteelchains.Thedeterminationofthistoughnessmusttakeplaceunderunfavourableboundaryconditions,i.e.atthelowestpermissibleoperatingtemperatureondamaged(precracked)chains.Onthebasisofcharacteristicpropertiesdeterminedonchainsandthree-pointbend(TPB)specimensandthenotchimpactenergy,aload-bearingandbrittlefracturetransitiontemperatureconceptwaselaborated.Fromthecorrelationofthefracturestressofchains,fracturemechanicscharacteristicpropertiesandthenotchimpactenergy,minimumvaluesofthenotchimpactenergycanbederivedwhichyieldadequatesafetyagainstfractureforthedamagedchain.Furthermore,inordertoexcludebrittlefailureofchains,thepositionofthelowestpermissibleoperatingtemperaturerelativetotheNDT(nil-ductilitytransition)temperaturewasdetermined.Finally,thelinkageofthedeterminedfracturemechanicspropertiestonotchimpactenergyvaluesandthedefinitionoftherequirementsforthesevaluesfurnishesasimpletestandacceptanceprocedureforchainmaterialsandchaintypes.
【中国标准分类号】:H46
【国际标准分类号】:53_020_30;77_140_65
【页数】:51P;A4
【正文语种】:英语