IEC 60068-2-6-1982 基本环境试验规程.第2部分:试验.第6节:试验Fc和指南:振动(正弦)
作者:标准资料网 时间:2024-05-21 05:07:56 浏览:8324
来源:标准资料网
【英文标准名称】:Basicenvironmentaltestingprocedures.Part2:Tests.TestFcandguidance:Vibration(sinusoidal)
【原文标准名称】:基本环境试验规程.第2部分:试验.第6节:试验Fc和指南:振动(正弦)
【标准号】:IEC60068-2-6-1982
【标准状态】:作废
【国别】:国际
【发布日期】:1982
【实施或试行日期】:
【发布单位】:国际电工委员会(IEC)
【起草单位】:IEC/SC50A
【标准类型】:()
【标准水平】:()
【中文主题词】:环境试验;定义;振动;振动试验;材料试验;正弦的;试验;指导手册;电气工程;环境
【英文主题词】:vibrationtesting;definitions;testing;electricalengineering;guidebooks;environmentaltesting;environment;materialstesting;sinusoidal;vibration
【摘要】:
【中国标准分类号】:A21
【国际标准分类号】:1290
【页数】:59P.;A4
【正文语种】:英语
【英文标准名称】:StandardPracticeforCalculationofColorTolerancesandColorDifferencesfromInstrumentallyMeasuredColorCoordinates
【原文标准名称】:仪器测量颜色坐标中允许色差和色差的计算用标准实施规程
【标准号】:ASTMD2244-2009b
【标准状态】:现行
【国别】:美国
【发布日期】:2009
【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】:E12.04
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:
【英文主题词】:color;colordifference;colormetrics;colorspaces;colortolerances;Latexpaints;Lighttransmissionandreflection;Reflectanceandreflectivity--paints/relatedcoatings/materials;Tristimulusvalue;Color--paints/relatedcoatings/materials;Instrum
【摘要】:TheoriginalCIEcolorscalesbasedontristimulusvaluesX,Y,Zandchromaticitycoordinatesx,yarenotuniformvisually.EachsubsequentcolorscalebasedonCIEvalueshashadweightingfactorsappliedtoprovidesomedegreeofuniformitysothatcolordifferencesinvariousregionsofcolorspacewillbemorenearlycomparable.Ontheotherhand,colordifferencesobtainedforthesamespecimensevaluatedindifferentcolor-scalesystemsarenotlikelytobeidentical.Toavoidconfusion,colordifferencesamongspecimensortheassociatedtolerancesshouldbecomparedonlywhentheyareobtainedforthesamecolor-scalesystem.Thereisnosimplefactorthatcanbeusedtoconvertaccuratelycolordifferencesorcolortolerancesinonesystemtodifferenceortoleranceunitsinanothersystemforallcolorsofspecimens.Foruniformityofpractice,theCIErecommendedin1976theuseoftwocolormetrics.TheCIELABmetric,withitsassociatedcolor-differenceequation,hasfoundwideacceptanceinthecoatings,plastics,textilesandrelatedindustries.WhiletheCIELABequationhasnotcompletelyreplacedtheuseofHunterLH,aH,bH,thisolderscaleisnolongerrecommendedforotherthanlegacyusers,andisthereforeincludedinanAppendixforhistoricalpurposes.TheCIELABcolor-differenceequationisalsonotrecommendedinthispracticeforuseindescribingsmallandmoderatecolordifferences(differenceswithmagnitudelessthan5.0x0394;E*abunits).Thefourmorerecentlydefinedequations,documentedhere,arehighlyrecommendedforusewithcolor-differencesintherangeof0.0to5.0x0394;E*abunits.Usersofcolortoleranceequationshavefoundthat,ineachsystem,summationofthree,vectorcolor-differencecomponentsintoasinglescalarvalueisveryusefulfordeterminingwhetheraspecimencoloriswithinaspecifiedtolerancefromastandard.However,forcontrolofcolorinproduction,itmaybenecessarytoknownotonlythemagnitudeofthedeparturefromstandardbutalsothedirectionofthisdeparture.Itispossibletoincludeinformationonthedirectionofasmallcolordifferencebylistingthethreeinstrumentallydeterminedcomponentsofthecolordifference.Selectionofcolortolerancesbasedoninstrumentalvaluesshouldbecarefullycorrelatedwithavisualappraisaloftheacceptabilityofdifferencesinhue,lightness,andsaturationobtainedbyusingPracticeD1729.Thethreetoleranceequationsgivenherehavebeentestedextensivelyagainstsuchdatafortextilesandplasticsandhavebeenshowntoagreewiththevisualevaluationstowithintheexperimentaluncertaintyofthevisualjudgments.Thatimpliesthattheequationsthemselvesmisclassifyacolordifferencewithafrequencynogreaterthanthatofthemostexperiencedvisualcolormatcher.Whilecolordifferenceequationsandcolortoleranceequationsareroutinelyappliedtoawiderangeofilluminants,theyhavebeenderivedoroptimized,orboth,foruseunderdaylightillumination.Goodcorrelationwiththevisualjudgmentsmaynotbeobtainedwhenthecalculationsaremadewithotherilluminants.Useofatoleranceequationforotherthandaylightconditionswillrequirevisualconfirmationofthelevelofmetamerisminaccordancewith........
【中国标准分类号】:A26
【国际标准分类号】:17_180_20
【页数】:11P.;A4
【正文语种】:英语
【英文标准名称】:Metallicmaterials-Verificationofstaticuniaxialtestingmachines-Part2:Tensioncreeptestingmachines-Verificationoftheappliedforce(ISO7500-2:2006);EnglishversionofDINENISO7500-2:2007-04
【原文标准名称】:金属材料.静态非同轴试验机校验.第2部分:拉伸蠕变试验机.外加力校验
【标准号】:DINENISO7500-2-2007
【标准状态】:现行
【国别】:德国
【发布日期】:2007-04
【实施或试行日期】:
【发布单位】:德国标准化学会(DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:拉伸强度;力;材料试验机;材料试验;金属材料;金属;单轴向;静荷载;应力;压力破裂实验样品;拉伸应变;拉伸试验机;试验设备;试验力;试验;验证
【英文主题词】:
【摘要】:ThispartofISO7500specifiestheverificationoftestingmachinesusedforuniaxialcreeptestingintensioninaccordancewithISO204.Theverificationconsistsof—ageneralinspectionofthetestingmachine,and—averificationoftheforceappliedbythetestingmachine.ThispartofISO7500appliestodead-weightmachines,lever-typecreeptestingmachinesanddirect-spring-loadingmachines.Machineswithaforce-measuringsystem1)shouldbeverifiedinaccordancewithISO7500-1,Metallicmaterials—Verificationofstaticuniaxialtestingmachines—Part1:Tension/compressiontestingmachines—Verificationandcalibrationoftheforce-measuringsystem.
【中国标准分类号】:H22;N71
【国际标准分类号】:19_060;77_040_10
【页数】:22P.;A4
【正文语种】:英语
