ANSI/(NFPA) T3.21.8-1990 气压传动.反应时间的测量.方向控制阀门

上一篇: ANSI/(NFPA) T3.21.3-1990 气压传动.固定节流元件的流速试验程序和报告方法.
下一篇: BS EN 20286-1-1993 ISO极值和配合体系.公差,偏差和配合的基准

【英文标准名称】:Methodsoftestfordenseshapedrefractoryproducts-Part20:determinationofresistancetoabrasionatambienttemperature.
【原文标准名称】:致密成型耐火制品检验方法.第20部分:环境温度下抗磨性的测定
【标准号】:NFB40-300-20-2004
【标准状态】:作废
【国别】:法国
【发布日期】:2004-10-01
【实施或试行日期】:2004-10-20
【发布单位】:法国标准化协会(FR-AFNOR)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:试验设备;试样;试样;环境温度;测定;试验;数学计算;定义;抗磨性;测量技术;耐火材料;材料试验;材料;耐熔制品;耐熔的;侵蚀
【英文主题词】:Abrasionbehaviour;Abrasionresistance;Ambienttemperatures;Definition;Definitions;Determination;Erosion;Materials;Materialstesting;Mathematicalcalculations;Measuringtechniques;Refractory;Refractorymaterials;Refractoryproducts;Samples;Testequipment;Testspecimens;Testing
【摘要】:
【中国标准分类号】:Q40
【国际标准分类号】:81_080
【页数】:12P;A4
【正文语种】:其他


【英文标准名称】:StandardPracticeforFabricatingandCheckingAluminumAlloyUltrasonicStandardReferenceBlocks
【原文标准名称】:标准铝合金块的制造及超声波检验的标准操作规程
【标准号】:ASTME127-2007
【标准状态】:现行
【国别】:
【发布日期】:2007
【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】:合金;铝合金;比较;金属;无损检验;生产;测试;超声检验;超声波学
【英文主题词】:aluminumreferenceblocks;area-amplitudecalibrationblocks;distance-amplitudecalibrationblocks;nondestructivetesting;standardreferenceblocks;ultrasonicreferenceblocks;Aluminumalloyultrasonicreferenceblocks;Aluminumultrasonicreferenceblocks;Area-amplitudecalibrationblocks;Distance-amplitudecalibrationblocks;Nondestructiveevaluation(NDE);Referenceblocks;Ultrasonicreferenceblocks
【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】:
【国际标准分类号】:77_040_01;77_120_10
【页数】:15P.;A4
【正文语种】: