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BS EN 60068-2-2-2007 环境测试.试验.试验B:干热

作者:标准资料网 时间:2024-05-16 23:28:45  浏览:9377   来源:标准资料网
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【英文标准名称】:Environmentaltesting-Tests-TestB.Dryheat
【原文标准名称】:环境测试.试验.试验B:干热
【标准号】:BSEN60068-2-2-2007
【标准状态】:现行
【国别】:英国
【发布日期】:2007-10-31
【实施或试行日期】:2007-10-31
【发布单位】:英国标准学会(GB-BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:保用期服务;空气循环;温度变化;检验设备;气候试验;部件;锐度;识别标志;烘干;干热;干热试验;电气工程;电气设备;电学;环境;环境条件;环境测试;发热的;最终测量;热学;初始测量;材料测试;不发热的;预处理;样品;应力;应力时间;表面;温度;温度试验;试验环境;试验室;测试;热试验;热测试
【英文主题词】:Aftercare;Aircirculation;Changesoftemperature;Checkingequipment;Climatictests;Components;Definitions;Degreeofsharpness;Distinguishingsigns;Dry;Dryheat;Dry-heattests;Electricalengineering;Electricalequipment;Electricity;Environment;Environmentalconditions;Environmentaltesting;Exothermic;Finalmeasurements;Heat;Initialmeasurements;Materialstesting;Nomogram;Notexothermic;Pretreatment;Specimens;Stress;Stresstime;Surfaces;Temperature;Temperaturetest;Testatmospheres;Testchamber;Testing;Testingdevices;Thermaltest;Thermaltesting
【摘要】:Thisstandarddealswithdryheattestsapplicablebothtoheat-dissipatingandnonheatdissipatingspecimens.Fornonheat-dissipatingspecimens,TestsBbandBddonotdeviateessentiallyfromearlierissues.Theobjectofthedryheattestislimitedtothedeterminationoftheabilityofcomponents,equipmentorotherarticlestobeused,transportedorstoredathightemperature.Thesedryheattestsdonotenabletheabilityofspecimenstowithstandoroperateduringthetemperaturevariationstobeassessed.Inthiscase,itwouldbenecessarytouseIEC60068-2-14TestN:Changeoftemperature.Thedryheattestsaresubdividedasfollows:Dryheattestfornonheat-dissipatingspecimens–withgradualchangeoftemperature,Bb.Dryheattestsforheat-dissipatingspecimens–withgradualchangeoftemperature,Bd;–withgradualchangeoftemperature,specimenpoweredthroughout,Be.Theproceduresgiveninthisstandardarenormallyintendedforspecimensthatachievetemperaturestabilityduringtheperformanceofthetestprocedure.
【中国标准分类号】:K04;A21
【国际标准分类号】:19_040
【页数】:18P.;A4
【正文语种】:英语


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基本信息
标准名称:饲料级甜菜碱盐酸盐的测定离子色谱法
发布日期:2007-03-09
实施日期:2007-05-01
首发日期:
作废日期:
主管部门:山东省质量技术监督局
出版社:中国标准出版社
出版日期:2007-05-01
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所属分类: 农业 林业 畜牧 养蜂 养蚕 农业 农业和林业 农业和林业综合
【英文标准名称】:StandardTestMethodforMeasuringSurfaceWaterAbsorptionofOverlaidWood-BasedPanels
【原文标准名称】:测量木质人造板的表面吸水率的标准试验方法
【标准号】:ASTMD7433-2008
【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】:D07.03
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:wood-basedpanels;waterabsorption;overlays;CobbRing
【摘要】:Waterabsorptivenessthroughthesurfaceofanoverlaidpanelisafunctionofvariouscharacteristicsoftheoverlayandsubstrate,includingoverlayresincontent,thicknessoftheoverlay,porosity,andpermeability.Thistestmethodisusefulincomparingthewaterabsorptioncharacteristicsofdifferentoverlaidpanelproducts.Theresultsfromthistestmethodareinfluencedbyboththeperformanceoftheoverlaysystemandthepanelsubstrate.Therefore,theresultsareappropriateforcomparisonoftherelativeperformanceofanoverlaysystemwhentestedoversimilarormatchedpanelsubstrates.Note18212;Panelattributesthatmayinfluencewaterabsorptioninclude,butarenotlimitedto,paneltype,woodspecies,faceveneerthicknessandgrade,preoverlaysurfacetreatmentsuchassanding,particlegeometryandcompactionratio.1.1Thistestmethodcoversthedeterminationofthequantityofwaterabsorbedinaspecifiedtimethroughthesurfaceofanoverlaidwood-basedpanel.Thetestmethodmeasurestherateofwaterweightgainwithinacontrolledsurfaceareaoftheoverlaidpanelsurfacewhenexposedtostandingwater.ThemethodwasadaptedfromtheprinciplesofTestMethodD5795.1.2Thistestmethodisapplicabletovariousoverlaidwood-basedpanelsincluding,butnotlimitedto,plywood(suchasMDOandHDOreferencedinPS1x2013;07),orientedstrandboard,mediumdensityfiberboard,particleboard,andhardboard.1.3Thistestmethoddoesnotaddresssamplingprocedures,numberofreplicationsnorperformancecriteriasincethosedetailsvarydependinguponthepurposeofthetestingandthetypeofproduct.Themethodisspecifictothepanelsurfaceanddoesnotevaluatewaterabsorptionoredgeswellthatmayoccuralongpaneledges.Themethoddoesnotconsiderthevariablesrelatedtoin-servicemoistureconditionsandthereforedoesnotclaimtodirectlyrelatetowaterabsorptionthatmayoccurinactualpanelusesituations.1.4ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:B70
【国际标准分类号】:79_060_01
【页数】:3P.;A4
【正文语种】:英语



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