Designation:D6132−13(Reapproved2022)StandardTestMethodforNondestructiveMeasurementofDryFilmThicknessofAppliedOrganicCoatingsUsinganUltrasonicCoatingThicknessGage1ThisstandardisissuedunderthefixeddesignationD6132;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethoddescribestheuseofultrasonicfilmthicknessgagestomeasureaccuratelyandnondestructivelythedryfilmthicknessoforganiccoatingsappliedoverasubstrateofdissimilarmaterial.Measurementsmaybemadeonfieldstructures,oncommerciallymanufacturedproducts,oronlaboratorytestspecimens.Thesetypesofgagescanaccuratelymeasurethedryfilmthicknessoforganiccoatingsonavarietyofsubstratessuchasconcrete,wood,wallboard,plastic,fibercompositesandmetal.1.2Thistestmethodisnotapplicabletocoatingsthatwillbereadilydeformableunderloadofthemeasuringinstrumentastheinstrumentprobeisplaceddirectlyonthecoatingsurfacetotakeareading.1.3Theeffectiverangeofinstrumentsusingtheprincipleofultrasonicsislimitedbygagedesign.Athicknessrangeof8µmto7.60mm(0.3to300mils)hasbeendemonstrated.1.4ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.1.6Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2D823PracticesforProducingFilmsofUniformThicknessofPaint,CoatingsandRelatedProd...
