【英文标准名称】:StandardTestMethodforReflectanceFactorandColorbySpectrophotometryUsingBidirectional(45:0or0:45)Geometry
【原文标准名称】:用双向几何形状的分光光度法测量反射系数和颜色的测试方法(45:0或0:45)
【标准号】:ASTME1349-2006
【标准状态】:现行
【国别】:
【发布日期】:2006
【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】:E12.02
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:比色的;光学;反射;分光光度法;试验
【英文主题词】:bidirectionalgeometry;color;reflectance;spectrophotometer
【摘要】:Themostdirectandaccessiblemethodsforobtainingthecolorcoordinatesofobjectcolorsarebyinstrumentalmeasurementusingspectrophotometersorspectrocolorimeterswitheitherhemisphericalorbidirectionalopticalmeasuringsystems.Thistestmethodprovidesproceduresforsuchmeasurementbyspectrophotometryusingabidirectional(0:45or45:0)opticalmeasuringsystem.ThemethodforcolorandcolordifferencemeasurementusingfiltercolorimetersiscontainedinTestMethodE1347.Thistestmethodisespeciallysuitableformeasurementofthefollowingtypesofspecimensfortheindicateduses(seealsoGuideE179andPracticeE805):5.2.1Object-colorspecimensofanyglosslevelforcolorassessment.5.2.2Object-colorspecimenswithphysicallyflat,smoothsurfacesfromwhichtoobtaindataforuseincomputercolorantformulation.5.2.3Retroreflectivespecimens.Note18212;Toensureinter-instrumentagreementinthemeasurementofspecimenswithintermediategloss,forformulation,orofretroreflectivespecimens,significantlytightertolerancesthanthosegiveninPracticeE1164,InfluxandEffluxConditions,45x00B0;:Normal(45:0)andNormal:45x00B0;(0:45)ReflectanceFactorsection,mayberequiredfortheinstrumentanglesofilluminationandviewing.Informationontherequiredtolerancesisbeingdeveloped.Thistestmethodisnotrecommendedformeasurementofspecimenswithbaremetalsurfacesforcolorassessment,forwhichtheuseofhemisphericalmeasurementgeometry,aswithanintegrating-spheretypeinstrument,ispreferable(seeGuideE179).1.1Thistestmethodcoverstheinstrumentalmeasurementofthereflectionpropertiesandcolorofobject-colorspecimensbyuseofaspectrophotometerorspectrocolorimeterwithabidirectionalopticalmeasuringsystem,suchasannular,circumferential,oruniplanar45:0or0:45geometry.1.2Thistestmethodisgenerallysuitableforanynon-fluorescent,flatobject-colorspecimen.Itisespeciallyrecommendedformeasuringretroreflectivespecimensandspecimensofintermediategloss.1.3ProceduresrequiredforthemeasurementoffluorescentobjectcoloraregiveninPracticeE991andPracticeE2153.1.4ProceduresrequiredforthemeasurementofcolorusingfiltercolorimetersarecontainedinTestMethodE1347andthisstandarddoesnotaddressthoseinstruments..Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:A42
【国际标准分类号】:17_180_20
【页数】:3P.;A4
【正文语种】:
基本信息
| 标准名称： | 重要用途低碳钢丝 |
| 中标分类： |
冶金 >>
钢铁产品 >>
钢丝、钢丝绳 |
| 替代情况： | 调整为YB/T 5032-1993 |
| 发布日期： | |
| 实施日期： | 1983-03-01 |
| 首发日期： | |
| 作废日期： | |
| 出版日期： | |
| 页数： | 4页 |
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所属分类： 冶金 钢铁产品 钢丝 钢丝绳