作者:标准资料网 时间:2024-05-29 02:47:12   浏览:8892   来源:标准资料网

【英文标准名称】:StandardTestMethodforNondestructiveMeasurementofDryFilmThicknessofAppliedOrganicCoatingsUsinganUltrasonicGage
【原文标准名称】:用超声波仪表对外施的有机涂层的干膜厚度进行无损测量的标准试验方法
【标准号】:ASTMD6132-2008
【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】:D01.23
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:coatingthickness;dryfilmthickness;nondestructivethickness;paintthickness;ultrasonicthicknessgage;Nondestructiveevaluation(NDE)--paints/relatedcoatings;Concrete;Dryfilmthickness;Organiccoatings;Paintthickness;Ultrasonicthicknessga
【摘要】:p>Manycoatingpropertiesaremarkedlyaffectedbythefilmthicknessofthedryfilmsuchasadhesion,flexibility,andhardness.Tobeabletocompareresultsobtainedbydifferentoperators,itisessentialtomeasurefilmthicknesscarefully.Mostprotectiveandhighperformancecoatingsareappliedtomeetarequirementoraspecificationforthedry-filmthicknessofeachcoat,orforthecompletesystem,orboth.Coatingsmustbeappliedwithincertainminimumandmaximumthicknesstolerancesinorderthattheycanfulfilltheirintendedfunction.Inadditiontopotentialperformancedeficiencies,itisuneconomicaltoapplymorematerialthannecessarywhencoatinglargeareassuchasfloorsandwalls.Surfaceroughnesscanaffecttheaccuracyofthistestmethod.Aroughsurfacehasatendencytoscattertheultrasonicpulseandoddreadingsmayoccuroccasionally.Thistestmethodmaynotbeapplicabletomeasureorganiccoatingthicknessonallsubstrates.Theinstrument''sabilitytodetectadistinctinterfacebetweenthecoatingandthesubstratemaybeimpededifthecoatingandthesubstrateareofsimilarcompositionorifthecoatingisnon-homogeneous.Verifyoperationonaknownthicknessofthecoating/substratecombinationifthesecircumstancesarethoughttoexist.Multilayeredcoatingshavemanyinterfacesandtheinstrumentwillmeasuretotheinterfaceseparatingthetwomostacousticallydifferentmaterials.Someinstrumentshavetheabilitytodetectandmeasuretheindividuallayerthicknessesinamulti-layersystem.Theuseofthistestmethodisnotnecessarilylimitedbythetypeofsubstratematerialasnondestructivemagnetic-typeoreddycurrentmeans.1.1Thistestmethodcoverstheuseofultrasonicfilmthicknessgagestomeasureaccuratelyandnondestructivelythedryfilmthicknessoforganiccoatingsappliedoverasubstrateofdissimilarmaterial.Measurementsmaybemadeonfieldstructures,oncommerciallymanufacturedproducts,oronlaboratorytestspecimens.Thesetypesofgagescanaccuratelymeasurethedryfilmthicknessoforganiccoatingsonconcrete,woodandwallboardsubstrates.1.2Thistestmethodisnotapplicabletocoatingsthatwillbereadilydeformableunderloadofthemeasuringinstrumentastheinstrumentprobeisplaceddirectlyonthecoatingsurfacetotakeareading.1.3Theeffectiverangeofinstrumentsusingtheprincipleofultrasonicsislimitedbygagedesign.Athicknessrangeof0.3to600mils(8x03BC;mto15mm)hasbeendemonstrated.1.4ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.5Thisstandarddoesnotpurporttoaddressthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:A29
【国际标准分类号】:71_040_50
【页数】:3P.;A4
【正文语种】:英语