SAE AMS10135 Angle - Bulb Section Extruded
作者:标准资料网 时间:2024-05-14 21:20:03 浏览:9187
来源:标准资料网
Product Code:SAE AMS10135
Title:Angle - Bulb Section Extruded
Issuing Committee:Ams D Nonferrous Alloys Committee
Scope: No Scope is available.
Rationale: No Scope is available.
【英文标准名称】:Pulps-Laboratorywetdisintegration-Part3:disintegrationofmechanicalpulpsatsuperiororequal85oC.
【原文标准名称】:纸浆.实验室湿态解离.第3部分:大于或等于85鳦时机械纸浆的解离
【标准号】:NFQ50-002-3-2005
【标准状态】:现行
【国别】:法国
【发布日期】:2005-02-01
【实施或试行日期】:2005-02-20
【发布单位】:法国标准化协会(AFNOR)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:分解法;湿态强度;方法;纸浆;实验室试验;分解;纤维;化学纤维;木浆;定义;试验;试验设备;试样制备;湿态解离;分解特性;力学;测量;仪器;半成品
【英文主题词】:
【摘要】:
【中国标准分类号】:Y31
【国际标准分类号】:85_040
【页数】:19P;A4
【正文语种】:其他
【英文标准名称】:StandardTestMethodforVickersIndentationHardnessofAdvancedCeramics
【原文标准名称】:高级陶瓷的维氏压痕硬度的标准试验方法
【标准号】:ASTMC1327-2008
【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】:C28.01
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:advancedceramics;cracks;indentation;microscope;Vickershardness;Advancedceramics;Hardness(indentation);Microscopicexamination--advancedceramics;Opticalmicroscopy;Vickershardness(HV)
【摘要】:Foradvancedceramics,Vickersindentersareusedtocreateindentationswhosesurface-projecteddiagonalsaremeasuredwithopticalmicroscopes.TheVickersindentercreatesasquareimpressionfromwhichtwosurface-projecteddiagonallengthsaremeasured.Vickershardnessiscalculatedfromtheratiooftheappliedloadtotheareaofcontactofthefourfacesoftheundeformedindenter.(Incontrast,Knoopindentersarealsousedtomeasurehardness,butKnoophardnessiscalculatedfromtheratiooftheappliedloadtotheprojectedareaonthespecimensurface.)Vickersindentationhardnessisoneofmanypropertiesthatisusedtocharacterizeadvancedceramics.AttemptshavebeenmadetorelateVickersindentationhardnesstootherhardnessscales,butnogenerallyacceptedmethodsareavailable.Suchconversionsarelimitedinscopeandshouldbeusedwithcaution,exceptforspecialcaseswhereareliablebasisfortheconversionhasbeenobtainedbycomparisontests.Vickersindentationdiagonallengthsareapproximately2.8timesshorterthanthelongdiagonalofKnoopindentations,andtheindentationdepthisapproximately1.5timesdeeperthanKnoopindentationsmadeatthesameforce.Vickersindentationsareinfluencedlessbyspecimensurfaceflatness,parallelism,andsurfacefinishthanKnoopindentations,buttheseparametersmustbeconsiderednonetheless.VickersindentationsaremuchmorelikelytocausecracksinadvancedceramicsthanKnoopindentations.Thecracksmayinfluencethemeasuredhardnessbyfundamentallyalteringthedeformationprocessesthatcontributetotheformationofanimpression,andtheymayimpairorprecludemeasurementofthediagonallengthsduetoexcessivedamageattheindentationtipsorsides.Afullhardnesscharacterizationincludesmeasurementsoverabroadrangeofindentationforces.Vickershardnessofceramicsusuallydecreaseswithincreasingindentationsizeorindentationforce.Thetrendisknownastheindentationsizeeffect(ISE).Hardnessapproachesaplateauconstanthardnessatsufficientlylargeindentationsizeorforces.Thetestforcesorloadsthatareneededtoachieveaconstanthardnessvarywiththeceramic.Thetestforcespecifiedinthisstandardisintendedtobesufficientlylargethathardnessiseitherclosetoorontheplateau,butnotsolargeastointroduceexcessivecracking.AcomprehensivecharacterizationoftheISEisrecommendedbutisbeyondthescopeofthistestmethod,whichmeasureshardnessatasingle,designatedforce.1.1ThistestmethodcoversthedeterminationoftheVickersindentationhardnessofadvancedceramics.1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:Q32
【国际标准分类号】:81_060_99
【页数】:8P.;A4
【正文语种】:英语
