ASTM D2402-2007 纺织纤维的保水性用标准试验方法(离心机法)
时间:2024-05-03 13:47:05 来源: 标准资料网 作者：标准资料网 阅读：8485
【英文标准名称】:StandardTestMethodforWaterRetentionofTextileFibers(CentrifugeProcedure)
【原文标准名称】:纺织纤维的保水性用标准试验方法(离心机法)
【标准号】:ASTMD2402-2007
【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】:D13.58
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:试验;纺织纤维;纺织材料;蓄水
【英文主题词】:textilefibers;waterretention
【摘要】:Thistestmethodfortestingforwaterretentionoffibersaftercentrifugingisnotrecommendedforacceptancetestingofcommercialshipmentsbecausethetestismoreappropriatefordevelopmentandresearch.However,ifthetestistobeusedforacceptancetesting,comparativetestsasdescribedin5.1.1areadvised.5.1.1InthecaseofadisputearisingfromdifferencesinreportedtestresultsusingTestMethodD2402foracceptancetestingofcommercialshipments,thepurchaserandthesuppliershouldconductcomparativeteststodetermineifstatisticalbiasesexistbetweentheirlaboratories.Asaminimum,thetwopartiesshouldtakeagroupoftestspecimensthatareashomogeneousaspossibleandthatarefromalotofmaterialofthetypeinquestion.Thetestspecimensshouldthenberandomlyassignedinequalnumberstoeachlaboratoryfortesting.TheaverageresultsfromthetwolaboratoriesshouldbecomparedusingtheStudentrsquo;t-testforunpaireddatawithanacceptableprobabilitylevelchosenbythetwopartieswhiledesigningthetestprogram.Iftheanalysisshowsabias,itscausemustbefoundandcorrected,orthepurchaserandsuppliermustagreetointerpretfuturetestdatawithconsiderationfortheknownbias.Theamountofwaterretainedbyafibermassincreaseswithanincreaseinthehydrophilictendencyofthefiber.Thusthedataobtainedcanbeusedtoindicatethefollowing:5.2.1Differencesinwaterretentionbetweenthevariousman-madeandnaturalfibers,5.2.2Degreeofcross-linkingincellulosicfibers,5.2.3Damageincurredbywoolandsilkfibersduetoalkalineprocessing,and5.2.4Persistenceofwater-repellenttreatments.FIG.1Cross-sectionViewofCentrifugeTubeAssembly1.1Thistestmethodcoversthemeasurementofwaterretentionofman-madeandnaturalfibersasstaple,tow,orfilamentandspunyarns.Itisintendedtogiveameasureoftheamountofwaterwhichcannotberemovedfromthoroughlywettedfibersolelybymechanicalmeansasappliedbycentrifugalforce(see3.2).Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Forspecificprecautionarystatements,seeSection9.
【中国标准分类号】:W04
【国际标准分类号】:59_060_01
【页数】:4P.;A4
【正文语种】:
【英文标准名称】:StandardTestMethodforAlternating-CurrentMagneticPropertiesofAmorphousMaterialsatPowerFrequenciesUsingWattmeter-Ammeter-VoltmeterMethodwithSheetSpecimens
【原文标准名称】:带片状试样使用电力表.测量表.电压表方法在电源频率下非晶材料的交流电磁性能的标准试验方法
【标准号】:ASTMA932/A932M-2001(2006)
【标准状态】:现行
【国别】:美国
【发布日期】:2001
【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】:A06.01
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:ac;ammeter;amorphous;anneal;coreloss;excitingpower;formfactor;magnetic;peak;permeability;sheet;specific;voltmeter;wattmeter;waveform;yoke
【摘要】:Thistestmethodprovidesasatisfactorymeansofdeterminingvariousacmagneticpropertiesofamorphousmagneticmaterials.ItwasdevelopedtosupplementthetestingoftoroidalandEpsteinspecimens.Fortestingtoroidalspecimensofamorphousmaterials,refertoTestMethodA912/A912M.Theproceduresdescribedhereinaresuitableforusebymanufacturersandusersofamorphousmagneticmaterialsformaterialsspecificationacceptanceandmanufacturingcontrol.Note28212;Thistestmethodhasbeenprincipallyappliedtothemagnetictestingofthermally,magneticallyannealed,andflattenedamorphousstripat50and60Hz.Specificcorelossat13or14kG[1.3or1.4T],specificexcitingpowerat13or14kG[1.3or1.4T],andthefluxdensity,B,at1Oe[79.6A/m]aretherecommendedparametersforevaluatingpowergradeamorphousmaterials.1.1Thistestmethodcoverstestsforvariousmagneticpropertiesofflat-castamorphousmagneticmaterialsatpowerfrequencies(50and60Hz)usingsheet-typespecimensinayoke-typetestfixture.Itprovidesfortestingusingeithersingle-ormultiple-layerspecimens.Note18212;Thistestmethodhasbeenappliedonlyatfrequenciesof50and60Hz,butwithproperinstrumentationandapplicationoftheprinciplesoftestingandcalibrationembodiedinthetestmethod,itisbelievedtobeadaptabletotestingatfrequenciesrangingfrom25to400Hz.1.2Thistestmethodprovidesatestforspecificcoreloss,specificexcitingpowerandacpeakpermeabilityatmoderateandhighfluxdensities,butisrestrictedtoverysoftmagneticmaterialswithdccoercivitiesof0.07Oe[5.57A/m]orless.1.3Thetestmethodalsoprovidesproceduresforcalculatingacpeakpermeabilityfrommeasuredpeakvaluesoftotalexcitingcurrentsatmagneticfieldstrengthsuptoabout2Oe[159A/m].1.4Explanationofsymbolsandabbreviateddefinitionsappearinthetextofthistestmethod.TheofficialsymbolsanddefinitionsarelistedinTerminologyA340.1.5ThistestmethodshallbeusedinconjunctionwithPracticeA34/A34M.1.6Thevaluesstatedineithercustomary(cgs-emuandinch-pound)orSIunitsaretoberegardedseparatelyasstandard.Withinthisstandard,SIunitsareshowninbrackets.Thevaluesstatedineachsystemmaynotbeexactequivalents;therefore,eachsystemshallbeusedindependentlyoftheother.Combiningvaluesfromthetwosystemsmayresultinnonconformancewiththisstandard.1.7Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:N23
【国际标准分类号】:17_220_20
【页数】:12P.;A4
【正文语种】:英语
【英文标准名称】:RulesforConstructionofOverheadandGantryCranes(TopRunningBridge,MultipleGirder)
【原文标准名称】:桥式起重机和龙门起重机的建造规范(沿轨道上翼缘行走的桥架起重机复合梁)
【标准号】:ASMENOG-1-2010
【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】:美国机械工程师协会(US-ASME)
【起草单位】:ASME
【标准类型】:()
【标准水平】:()
【中文主题词】:桥;建筑;定义;龙门起重机;大梁;多倍;高架的;规则;顶部
【英文主题词】:Bridges;Construction;Definitions;Gantrycranes;Girders;Multiple;Overhead;Rules;Top
【摘要】:Thisdocumentcoverselectricoverheadandgantrymultiplegirdercraneswithtoprunningbridgeandtrolleyusedatnuclearfacilitiesandcomponentsofcranesatnuclearfacilities.
【中国标准分类号】:J80
【国际标准分类号】:53_020_20
【页数】:176P;A4
【正文语种】:英语