【英文标准名称】:StandardTestMethodfordcMagneticPropertiesofMaterialsUsingRingandPermeameterProcedureswithdcElectronicHysteresigraphs
【原文标准名称】:使用DC电磁滞曲线记录仪的参数处理和环形材料的DC磁性能的标准测试方法
【标准号】:ASTMA773/A773M-2001(2009)
【标准状态】:现行
【国别】:
【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】:dchysteresigraph;dchysteresis;Epsteintest;Hallprobe;hysteresisloop;permeameter;ring-typespecimen;Currentmeasurement--direct-current;D-cmagneticproperties;Direct-currentpermeability;Hysteresiseffects;Permeameters(direct-current)
【摘要】:Hysteresigraphtestingpermitsmorerapidandefficientcollectionofdchysteresis(B-Hloop)dataascomparedtothepointbypointballisticTestMethodsA341/A341MandA596/A596M.Theaccuracyandprecisionoftestingiscomparabletotheballisticmethods.Hysteresigraphsareparticularlydesirablefortestingofsemihardandhardmagneticmaterialswhereeithertheentiresecondquadrant(demagnetizationcurve)orentirehysteresisloopisofprimaryconcern.Providedthetestspecimenisrepresentativeofthebulksampleorlot,thistestmethodiswellsuitedfordesign,specificationacceptance,serviceevaluationandresearchanddevelopment.1.1Thistestmethodprovidesdchysteresigraphprocedures(B-Hloopmethods)forthedeterminationofbasicmagneticpropertiesofmaterialsintheformofring,toroidal,link,double-lappedEpsteincores,orotherstandardshapesthatmaybecut,stamped,machined,orgroundfromcast,compacted,sintered,forged,orrolledmaterials.Itincludestestsfornormalinductionandhysteresistakenunderconditionsofcontinuoussweepmagnetization.Rateofsweepmaybevaried,eithermanuallyorautomaticallyatdifferentportionsofthecurvesduringtracing.Totalelapsedtimefortracingahysteresisloopiscommonly10to120sperloop.1.2ThevaluesstatedineitherSIunitsorinch-poundunitsaretoberegardedseparatelyasstandard.Thevaluesstatedineachsystemmaynotbeexactequivalents;therefore,eachsystemshallbeusedindependentlyoftheother.Combiningvaluesfromthetwosystemsmayresultinnon-conformancewiththestandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:N24
【国际标准分类号】:
【页数】:10P.;A4
【正文语种】:


【英文标准名称】:Anodizedaluminiumandaluminiumalloys;Measurementofreflectancecharacteristicsofaluminiumsurfacesusingintegrating-sphereinstruments
【原文标准名称】:阳极氧化铝和铝合金用积分球仪法测量铝表面的反射特性
【标准号】:ISO6719-1986
【标准状态】:作废
【国别】:国际
【发布日期】:1986-08
【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/TC79
【标准类型】:()
【标准水平】:()
【中文主题词】:试验设备;试验;分析;铝;反射系数;测定;阳极氧化;折射测量分析;氧化;铝合金
【英文主题词】:Aluminium;Aluminiumalloys;Analysis;Anodizing;Determination;Oxidation;Reflectionfactor;Testequipment;Testing;Tests
【摘要】:GB／T20624的本部分规定了用一直径为12．7mm或15．9mm的球形冲头撞击涂层及底材而引起其快速变形并对变形结果进行评定的试验方法。注：术语“耐冲击性”是包括在本标准的标题中,但所用仪器的一个重要特征是它将引起快速变形而不是真正意义上的冲击。当采用数值结果时,本试验方法再现性较差,故限定在同一实验室内进行试验。如用等级评定代替数值结果可以提高实验的一致性。
【中国标准分类号】:A29;H20
【国际标准分类号】:25_220_40
【页数】:9P.;A4
【正文语种】:英语