ASTM D 6982-2003 使用点网(格栅)搜寻模式探测热点和地下物体的标准实施规范

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【英文标准名称】:Informationtechnology-InternationalstandardizedprofileRA-Relayingtheconnectionless-modenetworkservice-Part6:DefinitionofprofileRA51.54,relayingtheconnectionless-modenetworkservicebetweenCSMA/CDLANsubnetworksandFDDILANsubnetw
【原文标准名称】:信息技术国际标准化轮廓RA中继无连接方式网络服务第6部分:轮廓RA51.54的定义,在CSMA/CDLAN子网与FDDILAN子网之间中断无连接方式网络服务
【标准号】:ISO/IECISP10613-6-1995
【标准状态】:作废
【国别】:国际
【发布日期】:1995-04
【实施或试行日期】:
【发布单位】:国际标准化组织(IX-ISO)
【起草单位】:ISO/IECJTC1
【标准类型】:()
【标准水平】:()
【中文主题词】:外形;无连接;带检测冲突的载波监听外路存取;数据传输;控制规程;标准轮廓;通信网;网络互连;网络层;信息交换;局域网;通信规程;信息技术;数据处理;数据网络;电信;开放系统互连;局部地区网络;继电器
【英文主题词】:Communicationnetworks;Communicationprocedures;Connectionless;Controlprocedures;CSMA/CD;Datanetwork;Dataprocessing;Datatransmission;Informationinterchange;Informationtechnology;LAN;Localareanetworks;Networkinterconnection;Networklayers;OSI;Profile;Relays;Standardizedprofiles;Telecommunications
【摘要】:ApplicabletointerworkingunitsconcernedwithoperatingintheOpenSystemsInterconnection(OSI)environment.SpecifiesacombinationofOSIbasestandardsthatcollectivelyprovideaNetworkRelayfunctionfortheconnectionless-modeNetworkService.SpecifiestheRA51.54profileapplicabletointerworkingunitsoperatingbetweenCSMA/CDLANsubnetworksandFDDILANsubnetworks.
【中国标准分类号】:M11
【国际标准分类号】:35_100_05
【页数】:6P;A4
【正文语种】:英语


【英文标准名称】:StandardTestMethodforEffectofSurfaceGrindingonFlexureStrengthofAdvancedCeramics
【原文标准名称】:测试表面研磨对高级陶瓷抗挠强度的影响的标准试验方法
【标准号】:ASTMC1495-2007
【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】:C28.01
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:高级工业陶瓷;影响;抗弯强度;表面研磨;试验方法
【英文主题词】:surfacegrinding;machining;advancedceramic;flexurestrength;baselineflexurestrength;damagetolerance
【摘要】:Surfacegrindingcancauseasignificantdecrease3intheflexurestrengthofadvancedceramicsmaterials.Themagnitudeofthelossinstrengthisdeterminedbythegrindingconditionsandtheresponseofthematerial.Thistestmethodcanbeusedtoobtainadetailedcharacterizationoftherelationshipbetweengrindingconditionsandflexurestrengthforanadvancedceramicmaterial.Theeffectonflexurestrengthofvaryingasinglegrindingparameterorseveralgrindingparameterscanbemeasured.Themethodmayalsobeusedtocompareandrankdifferentmaterialsaccordingtotheirresponsetooneormoredifferentgrindingconditions.Resultsobtainedbythismethodcanbeusedtodevelopanoptimumgrindingprocesswithrespecttomaximizingmaterialremovalrateforaspecifiedflexurestrengthrequirement.Thetestmethodcanassistinthedevelopmentofimprovedgrinding-damage-tolerantceramicmaterials.Itmayalsobeusedforqualitycontrolpurposestomonitorandassuretheconsistencyofagrindingprocessinthefabricationofpartsfromadvancedceramicmaterials.Thetestmethodisapplicabletogrindingmethodsthatgenerateaplanarsurfaceandisnotdirectlyapplicabletogrindingmethodsthatproducenon-planarsurfacessuchascylindricalandcenterlessgrinding.1.1Thistestmethodcoversthedeterminationoftheeffectofsurfacegrindingontheflexurestrengthofadvancedceramics.Surfacegrindingofanadvancedceramicmaterialcanintroducemicrocracksandotherchangesinthenearsurfacelayer,generallyreferredtoasdamage(See).Suchdamagecanresultinachange-mostoftenadecrease-inflexurestrengthofthematerial.Thedegreeofchangeinflexurestrengthisdeterminedbyboththegrindingprocessandtheresponsecharacteristicsofthespecificceramicmaterial.Thismethodcomparestheflexurestrengthofanadvancedceramicmaterialafterapplicationofauser-specifiedsurfacegrindingprocesswiththebaselineflexurestrengthofthesamematerial.Thebaselineflexurestrengthisobtainedafterapplicationofasurfacegrindingprocessspecifiedinthisstandard.Thebaselineflexurestrengthisexpectedtoapproximatecloselytheinherentstrengthofthematerial.TheflexurestrengthismeasuredbymeansofASTMstandardflexuretestmethods.1.2FlexuretestmethodsusedtodeterminetheeffectofsurfacegrindingareC1161TestMethodforFlexureStrengthofAdvancedCeramicsatAmbientTemperaturesandC1211TestMethodforFlexureStrengthofAdvancedCeramicsatElevatedTemperatures.1.3MaterialscoveredinthisstandardarethoseadvancedceramicsthatmeetcriteriaspecifiedinflexuretestingstandardsC1161andC1211.1.4Theflexuretestmethodssupportingthisstandard(C1161andC1211)requirespecimensthathavearectangularcrosssection,flatsurfaces,andthatarefabricatedwithspecificdimensionsandtolerances.Onlygrindingprocessesthatarecapableofgeneratingthespecifiedflatsurfaces,i.e.planargrindingmodes,aresuitableforevaluationbythismethod.Amongtheapplicablemachinetypesarehorizontalandverticalspindlereciprocatingsurfacegrinders,horizontalandverticalspindlerotarysurfacegrinders,doublediskgrinders,andtool-and-cuttergrinders.Incrementalcross-feed,plunge,andcreep-feedgrindingmethodsmaybeused.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:Q32
【国际标准分类号】:81_060_30
【页数】:12P.;A4
【正文语种】: