标准资料网-标准资料免费资源平台

【英文标准名称】:Workplaceair.Determinationofmetalsandmetalloidsinairborneparticulatematterbyinductivelycoupledplasmaatomicemissionspectrometry.Sampling
【原文标准名称】:车间空气.等离子体原子发射光谱法对颗粒物中金属及非金属的测定.采样
【标准号】:BSISO15202-1-2012
【标准状态】:现行
【国别】:英国
【发布日期】:2012-06-30
【实施或试行日期】:2012-06-30
【发布单位】:英国标准学会(GB-BSI)
【起草单位】:IEC/TC55
【标准类型】:()
【标准水平】:()
【中文主题词】:空气;空气污染;空气质量;环境;原子吸收分光光度测定法;原子发射光谱法;化学分析和测试;定义;测定;含量测定;气体分析;感应;准金属;金属;颗粒;粒状物;质量;取样;采样设备;工作场所浓度;工作地点;工作场所安全性
【英文主题词】:Air;Airpollution;Airquality;Atmosphere;Atomicabsorptionspectroscopy;Atomicemissionspectrometry;Chemicalanalysisandtesting;Definitions;Determination;Determinationofcontent;Gasanalysis;Induction;Metalloids;Metals;Particles;Particulatematter;Quality;Sampling;Samplingequipment;Workingplaceconcentration;Workingplaces;Workplacesafety
【摘要】:
【中国标准分类号】:
【国际标准分类号】:13_040_30
【页数】:30P;A4
【正文语种】:英语


【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-2011
【标准状态】:现行
【国别】:
【发布日期】:2011
【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】:压力模数;抗压强度;芯;平压;夹心;抗平压力度;三明治内层芯板
【英文主题词】:compressivemodulus;compressivestrength;core;flatwisecompression;sandwich;Flatwisecompressivestrength;Sandwichcorematerials
【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.1.1Thistestmethodcoversthedeterminationofcompressivestrengthandmodulusofsandwichcores.Thesepropertiesareusuallydeterminedfordesignpurposesinadirectionnormaltotheplaneoffacingsasthecorewouldbeplacedinastructuralsandwichconstruction.Thetestprocedurespertaintocompressioninthisdirectioninparticular,butalsocanbeappliedwithpossibleminorvariationstodeterminingcompressivepropertiesinotherdirections.Permissiblecorematerialformsincludethosewithcontinuousbondingsurfaces(suchasbalsawoodandfoams)aswellasthosewithdiscontinuousbondingsurfaces(suchashoneycomb).1.2Thistestmethoddoesnotcoverthedeterminationofcompressivecorecrushproperties.ReferenceTestMethodD7336/D7336Mfordeterminationofstaticenergyabsorptionpropertiesofhoneycombsandwichcorematerials.1.3ThevaluesstatedineitherSIunitsorinch-poundunitsaretoberegardedseparatelyasstandard.Thevaluesstatedineachsystemmaynotbeexactequivalents;therefore,eachsystemshallbeusedindependentlyoftheother.Combiningvaluesfromthetwosystemsmayresultinnon-conformancewiththestandard.1.3.1Withinthetexttheinch-poundunitsareshowninbrackets.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:
【国际标准分类号】:83_120
【页数】:8P.;A4
【正文语种】: