【英文标准名称】:Particularsafetyrequirementsforequipmenttobeconnectedtotelecommunicationnetworksand/oracabledistributionsystem.
【原文标准名称】:电信网络和/或电缆配电系统连接用设备的特殊安全要求
【标准号】:NFC98-011-2009
【标准状态】:现行
【国别】:法国
【发布日期】:2009-08-01
【实施或试行日期】:2009-08-29
【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】:
【英文主题词】:Adapters;Cabledistributingpoints;Circuitnetworks;Communicationequipment;Communicationnetworks;Connections;Electricappliances;Electricalengineering;Electricalsafety;Electrically-operateddevices;Electronically-operateddevices;Equipmentsafety;Informationprocessing;Protectionagainstelectricshocks;Safety;Safetyrequirements;Specification(approval);Telecommunication;Telecommunicationinstallations;Telecommunicationnetworks;Telecommunications;Testing
【摘要】:
【中国标准分类号】:M30
【国际标准分类号】:33_040_01
【页数】:15P;A4
【正文语种】:其他
【英文标准名称】:StandardTestMethodforFlatwiseCompressivePropertiesofSandwichCores
【原文标准名称】:层压芯材的抗平向压强的标准试验方法
【标准号】:ASTMC365/C365M-2005
【标准状态】:现行
【国别】:美国
【发布日期】:2005
【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】:D30.09
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:compressivemodulus;compressivestrength;flatwise;sandwichcore
【摘要】:Flatwisecompressivestrengthandmodulusarefundamentalmechanicalpropertiesofsandwichcoresthatareusedindesigningsandwichpanels.Deformationdatacanbeobtained,andfromacompleteforceversusdeformationcurve,itispossibletocomputethecompressivestressatanyappliedforce(suchascompressivestressatproportionallimitforceorcompressivestrengthatthemaximumforce)andtocomputetheeffectivemodulusofthecore.Thistestmethodprovidesastandardmethodofobtainingtheflatwisecompressivestrengthandmodulusforsandwichcorestructuraldesignproperties,materialspecifications,researchanddevelopmentapplications,andqualityassurance.Inordertopreventlocalcrushingattheedgesofsomehoneycombcores,itisoftendesirabletostabilizetheedgeswithasuitablematerial,suchasathinlayerofresinorthinfacings.Flatwisecompressivestrengthdatamaybegeneratedusingeitherstabilizedspecimens(reportedasstabilizedcompressionstrength)ornon-stabilizedspecimens(reportedasbarecompressionstrength).Itiscustomaryaerospaceindustrypracticetodeterminecompressionmodulusonlywhenusingstabilizedspecimens.Factorsthatinfluencetheflatwisecompressivestrengthandshallthereforebereportedincludethefollowing:corematerial,methodsofmaterialfabrication,coregeometry(cellsize),coredensity,specimengeometry,specimenpreparation,specimenconditioning,environmentoftesting,specimenalignment,loadingprocedure,andspeedoftesting.1.1Thistestmethodcoversthedeterminationofthecompressivestrengthandmodulusofsandwichcores.Thesepropertiesareusuallydeterminedfordesignpurposesinadirectionnormaltotheplaneoffacingsasthecorewouldbeplacedinastructuralsandwichconstruction.Thetestprocedurespertaintocompressioninthisdirectioninparticular,butalsocanbeappliedwithpossibleminorvariationstodeterminingcompressivepropertiesinotherdirections.1.2ThevaluesstatedinSIunitsaretoberegardedasthestandard.Theinch-poundunitsgivenmaybeapproximate.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:Q23
【国际标准分类号】:83_120
【页数】:7P.;A4
【正文语种】:英语
基本信息
| 标准名称： | 农作物优异种质资源评价规范 莲藕 |
| 发布部门： | 中华人民共和国农业部 |
| 发布日期： | 2012-06-06 |
| 实施日期： | 2012-09-01 |
| 首发日期： | |
| 作废日期： | |
| 出版社： | 中国农业出版社 |
| 出版日期： | 2012-09-01 |
适用范围
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前言
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所属分类： 农业 林业 经济作物 其他经济作物