【英文标准名称】:StandardTestMethodforFlexureCreepofSandwichConstructions
【原文标准名称】:加层结构挠曲蠕变的标准试验方法
【标准号】:ASTMC480/C480M-2008
【标准状态】:现行
【国别】:美国
【发布日期】:2008
【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】:bendingstress;corestress;creep;creepdeflection;facingstress;sandwich;sandwichconstruction;sandwichdeflection;Creep;Creepdeflection;Flexuraltesting--buildingmaterials;Sandwichcorematerials
【摘要】:Thedeterminationofthecreeprateprovidesinformationonthebehaviorofsandwichconstructionsunderconstantappliedforce.Creepisdefinedasdeflectionunderconstantforceoveraperiodoftimebeyondtheinitialdeformationasaresultoftheapplicationoftheforce.Deflectiondataobtainedfromthistestmethodcanbeplottedagainsttime,andacreepratedetermined.Byusingstandardspecimenconstructionsandconstantloading,thetestmethodmayalsobeusedtoevaluatecreepbehaviorofsandwichpanelcore-to-facingadhesives.Thistestmethodprovidesastandardmethodofobtainingflexurecreepofsandwichconstructionsforqualitycontrol,acceptancespecificationtesting,andresearchanddevelopment.Factorsthatinfluencethesandwichconstructioncreepresponseandshallthereforebereportedincludethefollowing:facingmaterial,corematerial,adhesivematerial,methodsofmaterialfabrication,facingstackingsequenceandoverallthickness,coregeometry(cellsize),coredensity,corethickness,adhesivethickness,specimengeometry,specimenpreparation,specimenconditioning,environmentoftesting,specimenalignment,loadingprocedure,speedoftesting,facingvoidcontent,adhesivevoidcontent,andfacingvolumepercentreinforcement.Further,facingandcore-to-facingstrengthandcreepresponsemaybedifferentbetweenprecured/bondedandco-curedfacesheetsofthesamematerial.1.1Thistestmethodcoversthedeterminationofthecreepcharacteristicsandcreeprateofflatsandwichconstructionsloadedinflexure,atanydesiredtemperature.Permissiblecorematerialformsincludethosewithcontinuousbondingsurfaces(suchasbalsawoodandfoams)aswellasthosewithdiscontinuousbondingsurfaces(suchashoneycomb).1.2ThevaluesstatedineitherSIunitsorinch-poundunitsaretoberegardedseparatelyasstandard.Withinthetexttheinch-poundunitsareshowninbrackets.ThevaluesstatedineitherSIunitsorinch-poundunitsaretoberegardedseparatelyasstandard.Thevaluesstatedineachsystemmaynotbeexactequivalents;therefore,eachsystemshallbeusedindependentlyoftheother.Combiningvaluesfromthetwosystemsmayresultinnon-conformancewiththestandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:Q23
【国际标准分类号】:83_120
【页数】:5P.;A4
【正文语种】:英语


【英文标准名称】:Informationtechnology-SEDRIS-Part1:Functionalspecification;Amendment1
【原文标准名称】:信息技术.SEDRIS语言.第1部分:功能规范.修改件1
【标准号】:ISO/IEC18023-1AMD1-2012
【标准状态】:现行
【国别】:国际
【发布日期】:2012-06
【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/SC24
【标准类型】:()
【标准水平】:()
【中文主题词】:数据交换;数据处理;数据表示;定义;环境;环境数据;图形数据处理;信息交换;信息技术;污染控制;SEDRIS;语义学;软件;规范;句法
【英文主题词】:Dataexchange;Dataprocessing;Datarepresentation;Definitions;Environment;Environmentaldata;Graphicdataprocessing;Informationinterchange;Informationtechnology;Pollutioncontrol;SEDRIS;Semantics;Software;Specification;Syntax
【摘要】:
【中国标准分类号】:L74
【国际标准分类号】:35_140
【页数】:
【正文语种】:英语