【英文标准名称】:StandardPracticeforFabricationandControlofMetal,OtherthanAluminum,ReferenceBlocksUsedinUltrasonicTesting
【原文标准名称】:超声波校准用金属非铝基块的制造和控制的标准实施规程
【标准号】:ASTME428-2008
【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】:E07.06
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:
【英文主题词】:area-amplitudereferenceblocks;distance-amplitudereferenceblocks;metalalloyreferenceblocks;nondestructivetesting;ultrasonicreferenceblocks;Specimenpreparation(fortesting)--metals/alloys;Ultrasonicreferenceblocks
【摘要】:Referenceblocksfabricatedinaccordancewiththispracticewillexhibitspecificarea-amplitudeanddistance-amplituderelationshipsonlywithanimmersiontestat5MHzusingthesearchunit,testinstrumentandtestparametersdescribedinthispractice.Comparisontestatotherfrequenciesorwithuncalibratedinstrumentswillnotnecessarilygivethesamerelationshipsshowninthispractice.SeeReference(1)forarea-amplitudelimitationsatotherfrequenciesandtransducerdiameters.AlsoseeReference(2)forcautionsregardinguseofstandardblocksforteststandardizations.1.1Thispracticecoversaprocedureforfabricationandcontrolofmetalalloyreferenceblocksusedinultrasonicexaminationthathaveaflat-surfacesoundentry,arecylindricalinshape,andcontainflat-bottomholes(FBH)whichmaybeusedforcheckingtheperformanceofultrasonicexaminationinstrumentationandsearchunitsandforstandardizationandcontrolofultrasonicexaminationofmetalalloyproducts.Thereferenceblocksdescribedaresuitableforusewitheitherthedirect-contactmethodorimmersionpulse-echoultrasonicmethods.Note18212;Useofflat-surfacereferenceblocksmaynotbesuitableforcylindricalmaterials(3).1.2Whilethisprocedureisbasicallydesignedforthefabricationandcontrolofcarbonandalloysteelblockstobeusedinconjunctionwiththeexaminationofthesematerials,thefabricationandcontrolproceduresmayalsobesuitableforthepreparationofblocksforothertypesofmaterialssuchasnickel-basealloys,certaintypesofaluminumalloys,andsoforth.Additionalproceduresandcontrolsmayberequiredwhenfabricatingreferenceblocksfromotherthancarbonoralloysteelmaterial.Thispracticeshallinnowayprecludethespecificationoradditionofanysupplementedrequirementsasdeemednecessaryforthespecificapplication.Thispractice,however,mustnotbeconfusedwith,nordoesitsupersedePracticeE127,specificallygoverningthefabricationandevaluationof7075-T6aluminumalloyultrasonicstandardreferenceblocks.Note28212;PracticeE127andGuideE1158alsodescribeproceduresforselectingmaterial,fabricatingblocks,andcheckingresponse.Unlikethispractice,PracticeE127hasrequirementsforevaluationrelativetoaspecifiedstandardtarget.1.3Thevaluesstatedininch-poundunitsaretoberegardedasstandard.ThevaluesgiveninparenthesesaremathematicalconversionstoSIunitsthatareprovidedforinformationonlyandarenotconsideredstandard.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyproblems,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:H26
【国际标准分类号】:77_040_20
【页数】:7P.;A4
【正文语种】:英语


【英文标准名称】:Fertilizers.Chemicalanalysis.Determinationofnitrogen.Methodfordeterminationoftotalnitrogencontent(titrimetricmethodafterdistillation)
【原文标准名称】:肥料.第4部分:化学分析.第1节:氮含量测定.第3小节:全氮含量测定方法(蒸馏后滴定法
【标准号】:BS5551SubSec.4.1.3-1986
【标准状态】:作废
【国别】:英国
【发布日期】:1986-07-31
【实施或试行日期】:
【发布单位】:英国标准学会(BSI)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:农用物资;尺寸;试验条件;基尔达斯法;试验设备;再现性;化学分析和试验;含量测定;容量分析;土壤改良;蒸馏分析法;农用化学制品;肥料;氮;还原法
【英文主题词】:
【摘要】:
【中国标准分类号】:G20
【国际标准分类号】:
【页数】:8P;A4
【正文语种】:英语