JIS S7007-1987 高山雪橇

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【英文标准名称】:StandardPracticeforElectromagnetic(Eddy-Current)ExaminationofTypeF-ContinuouslyWelded(CW)FerromagneticPipeandTubingAbovetheCurieTemperature
【原文标准名称】:在居里温度以上的F型连续焊接亚锰铁管的电磁(涡流)检验的标准实施规程
【标准号】:ASTME1033-2009
【标准状态】:现行
【国别】:美国
【发布日期】:2009
【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】:E07.07
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:
【英文主题词】:curietemperature;eddy-current;electromagnetic;NDT;nondestructivetesting;Austeniticstainlesssteelpipe;Austeniticstainlesssteeltube;Continuouswelding(CW);Curietemperature;Discontinuities--metals/alloys;Eddycurrentexamination;Electro
【摘要】:Thepurposeofthispracticeistooutlineaprocedureforthein-lineeddy-currentexaminationofhotCWpipeforthedetectionofmajorimperfectionsandrepetitivediscontinuities.Amajoradvantageofin-lineeddy-currentexaminationofferromagneticCWpipeabovetheCurietemperatureliesintheenhancedsignal-to-noiseratioanddepthofpenetrationobtainedwithouttheuseofmagneticsaturation.Theeddy-currentmethodiscapableofdetectingandlocatingweldimperfectionscommonlyreferredtoasopenwelds,cavewelds,blackspots(weldinclusions),andpartialwelds(incompletepenetration).Inaddition,itwilldetectpipe-wallimperfectionssuchasslivers,laps,andringwelds(endwelds).Therelativeseverityoftheimperfectionsmaybeindicatedbyeddy-currentsignalamplitudeorphase,orboth.Analarmlevelmaybeselectedthatutilizessignalamplitudeorphase,orboth,forautomaticrecordingormarking,orboth.Becausetheresponsesfromnaturaldiscontinuitiesmayvarysignificantlyfromthosefromartificialdiscontinuities,caremustbeexercisedinestablishingtestsensitivityandacceptancecriteria.1.1Thispracticecoversaprocedureforin-line,eddy-currentexaminationofcontinuouslywelded(CW)ferromagneticpipeandtubingattemperaturesabovetheCurietemperature(approximately1400x00B0;F)(760x00B0;C),wherethepipeissubstantiallynonmagneticoraustenitic.1.2Thispracticeisintendedforuseontubularproductshavingnominaldiametersofx00BD;in.(12.7mm)to4in.(101.6mm).Thesetechniquesmaybeusedforlarger-orsmaller-diameterpipeandtubingasspecifiedbytheusingparties.1.3Thispracticeisspecificallyapplicabletoeddy-currentexaminationusingencirclingcoils,orprobecoils.1.4Thispracticedoesnotestablishacceptancecriteria.Theymustbeestablishedbytheusingparties.1.5Thevaluesstatedininch-poundunitsaretoberegardedasthestandard.ThevaluesgiveninparenthesesaremathematicalconversionstoSIunitsthatareprovidedforinformationonlyandarenotconsideredstandard.1.6Thisstandarddoesnotpurporttoaddressthesafetyproblemsassociatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:H26
【国际标准分类号】:
【页数】:3P.;A4
【正文语种】:英语


【英文标准名称】:Plastics-Determinationofaveragemolecularmassandmolecularmassdistributionusingsize-exclusionchromatography-Part1:Generalprinciples
【原文标准名称】:塑料.用粒度排除色谱法测定平均分子质量和分子质量分布.第1部分:一般原理
【标准号】:ISO16014-1-2003
【标准状态】:作废
【国别】:国际
【发布日期】:2003-03
【实施或试行日期】:
【发布单位】:国际标准化组织(IX-ISO)
【起草单位】:ISO/TC61
【标准类型】:()
【标准水平】:()
【中文主题词】:纸浆;分配;高聚物;总论;平均;分子;测量原理;质量(物质);色谱法;原理;分子质量;大小测量;塑料;测定
【英文主题词】:Average;Chromatography;Determination;Distribution;Generalsection;Mass;Molecularmass;Molecules;Plastics;Polymers;Principle;Principleofmeasurement;Pulp;Sizemeasurement
【摘要】:ThispartofISO16014specifiesageneralmethodfordeterminingtheaveragemolecularmassandthemolecularmassdistributionofpolymersusingsize-exclusionchromatography(SEC).Theaveragemolecularmassandthemolecularmassdistributionarecalculatedfromacalibrationcurveconstructedusingpolymerstandards.Thereforethismethodisclassifiedasarelativemethod(seeClauseA.1inAnnexA).
【中国标准分类号】:G31
【国际标准分类号】:83_080_01
【页数】:16P;A4
【正文语种】:英语