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【英文标准名称】:StandardPracticeforFabricatingandCheckingAluminumAlloyUltrasonicStandardReferenceBlocks
【原文标准名称】:铝合金超声波检验标准基准块的制造和检查的标准实施规程
【标准号】:ASTME127-2010
【标准状态】:现行
【国别】:美国
【发布日期】:2010
【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】:E07.06
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:
【英文主题词】:aluminumreferenceblocks;area-amplitudecalibrationblocks;distance-amplitudecalibrationblocks;nondestructivetesting;standardreferenceblocks;ultrasonicreferenceblocks;Aluminumalloyultrasonicreferenceblocks;Aluminumultrasonicreferen
【摘要】:Referenceblocksfabricatedtothispracticewillexhibitspecificarea-amplitudeanddistance-amplituderelationshipsonlywithanimmersiontestat5MHzusingthesearchunit,testinstrument,andtestparametersdescribedinthispractice.Comparisontestsatotherfrequenciesorwithuncalibratedtestsystemswillnotnecessarilygivethesamerelationshipsshowninthispractice.Note28212;The1964andpriorissuesofthispracticerequiredatestfrequencyof15MHz.Blocksconformingtoearlierissuesofthispracticemaynotproduceultrasonicresponsesthatconformtothisissue.SeeSection13regardingprovisionforrecertificationorcorrectioncurvesandtables.Althoughtheprimaryultrasonicevaluationofblocksisperformedataspecifiedfrequency,theblocksmaybeusedtostandardizeultrasonictestsatanyfrequencyandwithanypulse-echoultrasonictestsystem.Establishmentofdistance-amplitudeandarea-amplitudecharacteristicsisnecessaryforeachapplication.Thisusemaybeinappropriateforothermaterialsandcurvedsurfaceswithoutspecialcompensation.Alsosee(3)forcautionsregardinguseofstandardblocksforteststandardization.1.1Thispracticecoversaprocedureforfabricatingaluminumalloyultrasonicstandardreferenceblocksthatcanbeusedforcheckingperformanceofultrasonictestingequipmentandforstandardizationandcontrolofultrasonictestsofaluminumalloyproductsusingpulsedlongitudinalwavesintroducedintotestmaterialeitherbythedirect-contactmethodorbytheimmersionmethod.Arecommendedprocedureforcheckingblocksisdescribedandcalibrationdataforanumberofreferenceblocksaretabulated.Statementsconcerningproceduresareprovidedwithoutadiscussionofthetechnicalbackgroundforthepreference.ThenecessarytechnicalbackgroundcanbefoundinRefs.(1-16).Note18212;PracticeE428andGuideE1158alsodescribeproceduresforselectingmaterial,fabricatingblocks,andcheckingresponse.Unlikethispractice,thereisnorequirementforevaluationrelativetoaspecifiedstandardtarget.1.2Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:H26
【国际标准分类号】:77_120_10
【页数】:15P.;A4
【正文语种】:英语