Product Code:SAE MAM2261
Title:Tolerances, Metric, Nickel, Nickel Alloys, and Cobalt Alloy Bars, Rods, and Wire (Cancelled Jul 2007, Superseded by AMS2261)
Issuing Committee:Ams F Corrosion Heat Resistant Alloys Committee
Scope:This specification covers established metric manufacturing tolerances applicable to bars, rods, and wire of nickel, nickel alloys, and cobalt alloys ordered to metric dimensions. These tolerances apply to all conditions, unless otherwise noted. The term "excl" is used to apply only to the higher figure of a specified range.【英文标准名称】:Metallicmaterials-Charpypendulumimpacttest-Verificationoftestingmachines
【原文标准名称】:金属材料.夏比摆锤冲击试验.试验机的检验
【标准号】:BSENISO148-2-2008
【标准状态】:现行
【国别】:英国
【发布日期】:2009-03-31
【实施或试行日期】:2009-03-31
【发布单位】:英国标准学会(GB-BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:弯曲试验;特性记述;却贝(摆式冲击试验);摆式冲击试验;定义;耐久性;定义(术语);冲击试验;冲击测试;冲击试验机;冲击测试机;冲击试验;装配;材料测试机;材料试验机;材料试验;材料;材料测试;材料试验;机械测试;机械试验;金属的;金属材料;金属;切口试棒冲击弯曲试验;摆式冲击试验器;摆式冲击试验机;摆锤式冲击试验机;准备;参考装置;标准物质;参考材料;参考方法;基准方法;钢;钢管;符号;试验设备;试样;试验;测试;痕量元素分析;验证
【英文主题词】:Bendtesting;Characterisations;Charpy;Charpyimpacttests;Definitions;Impacttesting;Impacttestingmachines;Impacttests;Installation;Materialtestingmachines;Materialtests;Materials;Materialstesting;Mechanicaltesting;Metallic;Metallicmaterials;Metals;Notched-barimpactbendingtests;Pendulumimpacttester;Pendulumimpacttestingmachines;Preparation;Referencedevices;Referencematerials;Referencemethods;Steels;Symbols;Testequipment;Testspecimens;Testing;Verification
【摘要】:ThispartofISO148coverstheverificationoftheconstructionalelementsofpendulum-typeimpacttestingmachines.Itisapplicabletomachineswith2mmor8mmstrikersusedforpendulumimpacttestscarriedout,forinstance,inaccordancewithISO148-1.Itcananalogouslybeappliedtopendulumimpacttestingmachinesofvariouscapacitiesandofdifferentdesign.Impactmachinesusedforindustrial,generalorresearchlaboratorytestingofmetallicmaterialsinaccordancewiththispartofISO148arereferredtoasindustrialmachines.Thosewithmorestringentrequirementsarereferredtoasreferencemachines.SpecificationsfortheverificationofreferencemachinesarefoundinISO148-3.ThispartofISO148describestwomethodsofverification.a)Thedirectmethod,whichisstaticinnature,involvesmeasurementofthecriticalpartsofthemachinetoensurethatitmeetstherequirementsofthispartofISO148.Instrumentsusedfortheverificationandcalibrationaretraceabletonationalstandards.Directmethodsareusedwhenamachineisbeinginstalledorrepaired,oriftheindirectmethodgivesanon-conformingresult.b)Theindirectmethod,whichisdynamicinnature,usesreferencetestpiecestoverifypointsonthemeasuringscale.ApendulumimpacttestingmachineisnotincompliancewiththispartofISO148untilithasbeenverifiedbyboththedirectandindirectmethodsandmeetstherequirementsofClauses6and7.TherequirementsforthereferencetestpiecesarefoundinISO148-3.ThispartofISO148takesintoaccountthetotalenergyabsorbedinfracturingthetestpieceusinganindirectmethod.Thistotalabsorbedenergyconsistsof-theenergyneededtobreakthetestpieceitself,and-theinternalenergylossesofthependulumimpacttestingmachineperformingthefirsthalf-cycleswingfromtheinitialposition.NOTEInternalenergylossesaredueto-airresistance,frictionofthebearingsoftherotationaxisandoftheindicatingpointerofthependulumwhichcanbedeterminedbythedirectmethod(see6.4.5),and-shockofthefoundation,vibrationoftheframeandpendulumforwhichnosuitablemeasuringmethodsandapparatushavebeendeveloped.
【中国标准分类号】:H22
【国际标准分类号】:77_040_10
【页数】:48P.;A4
【正文语种】:英语