ASTM A370-2011 钢制品机械测试的标准试验方法和定义

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【英文标准名称】:StandardTestMethodsandDefinitionsforMechanicalTestingofSteelProducts
【原文标准名称】:钢制品机械测试的标准试验方法和定义
【标准号】:ASTMA370-2011
【标准状态】:现行
【国别】:
【发布日期】:2011
【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】:A01.13
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:弯曲试验;布氏硬度;却贝冲击试验;延伸
【英文主题词】:bendtest;Brinellhardness;Charpyimpacttest;elongation
【摘要】:Ductilevs.BrittleBehavior8212;Body-centered-cubicorferriticalloysexhibitasignificanttransitioninbehaviorwhenimpacttestedoverarangeoftemperatures.Attemperaturesabovetransition,impactspecimensfracturebyaductile(usuallymicrovoidcoalescence)mechanism,absorbingrelativelylargeamountsofenergy.Atlowertemperatures,theyfractureinabrittle(usuallycleavage)mannerabsorbingappreciablylessenergy.Withinthetransitionrange,thefracturewillgenerallybeamixtureofareasofductilefractureandbrittlefracture.Thetemperaturerangeofthetransitionfromonetypeofbehaviortotheothervariesaccordingtothematerialbeingtested.Thistransitionbehaviormaybedefinedinvariouswaysforspecificationpurposes.Thespecificationmayrequireaminimumtestresultforabsorbedenergy,fractureappearance,lateralexpansion,oracombinationthereof,ataspecifiedtesttemperature.Thespecificationmayrequirethedeterminationofthetransitiontemperatureatwhicheithertheabsorbedenergyorfractureappearanceattainsaspecifiedlevelwhentestingisperformedoverarangeoftemperatures.Alternativelythespecificationmayrequirethedeterminationofthefractureappearancetransitiontemperature(FATTn)asthetemperatureatwhichtherequiredminimumpercentageofshearfracture(n)isobtained.FurtherinformationonthesignificanceofimpacttestingappearsinAnnexA5.1.1Thesetestmethodscoverproceduresanddefinitionsforthemechanicaltestingofsteels,stainlesssteels,andrelatedalloys.Thevariousmechanicaltestshereindescribedareusedtodeterminepropertiesrequiredintheproductspecifications.Variationsintestingmethodsaretobeavoided,andstandardmethodsoftestingaretobefollowedtoobtainreproducibleandcomparableresults.Inthosecasesinwhichthetestingrequirementsforcertainproductsareuniqueoratvariancewiththesegeneralprocedures,theproductspecificationtestingrequirementsshallcontrol.
【中国标准分类号】:
【国际标准分类号】:77_040_10;77_140_01
【页数】:47P.;A4
【正文语种】:

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Product Code:SAE J495
Title:Straight Pins (Solid)
Issuing Committee:Fasteners Committee
Scope:【英文标准名称】:Informationtechnology-Programminglanguages-Prolog-Generalcore
【原文标准名称】:信息技术.编程语言.Prolog语言.通用芯
【标准号】:BSISO/IEC13211-1-1995
【标准状态】:现行
【国别】:英国
【发布日期】:1995-10-15
【实施或试行日期】:1995-10-15
【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】:高级语言;合格;句法;计算机软件;数据表示;程序设计;程序设计语言;语义学;数据处理
【英文主题词】:Artificiallanguages;Compatibility;Computersoftware;Dataprocessing;Definitions;Generalconditions;Informationexchange;Informationtechnology;Programflows;Programminginstructions;Programminglanguages;Prolog;Semantics;Syntax
【摘要】:ISO/IEC13211isdesignedtopromotetheapplicabilityandportabilityofPrologtextanddataamongavarietyofdataprocessingsystems.ThispartofISO/IEC13211specifies:a)TherepresentationofPrologtext,b)ThesyntaxandconstraintsoftheProloglanguage,c)ThesemanticrulesforinterpretingPrologtext,d)TherepresentationofinputdatatobeprocessedbyProlog,e)TherepresentationofoutputproducedbyProlog,andf)TherestrictionsandlimitsimposedonaconformingPrologprocessor.NOTE—ThispartofISO/IEC13211doesnotspecify:a)thesizeorcomplexityofPrologtextthatwillexceedthecapacityofanyspecificdataprocessingsystemorlanguageprocessor,ortheactionstobetakenwhenthecorrespondinglimitsareexceeded;b)theminimalrequirementsofadataprocessingsystemthatiscapableofsupportinganimplementationofaPrologprocessor;c)themethodsofactivatingthePrologprocessororthesetofcommandsusedtocontroltheenvironmentinwhichPrologtextispreparedforexecutionandexecuted;d)themechanismsbywhichPrologtextispreparedforusebyadataprocessingsystem;e)thetypographicalrepresentationofPrologtextpublishedforhumanreading;f)theuserenvironment(toplevelloop,debugger,librarysystem,editor,compileretc.)ofaPrologprocessor.ThispartofISO/IEC13211isintendedforusebyimplementorsandknowledgeableprogrammers,andisnotatutorial.1NotesNotesinthispartofISO/IEC13211havenoeffectonthelanguage,PrologtextorPrologprocessorsthataredefinedasconformingtothispartofISO/IEC13211.Reasonsforincludinganoteinclude;a)CrossreferencestootherclausesandsubclausesofthispartofISO/IEC13211inordertohelpreadersfindtheirwayaround,b)Warningswhenabuilt-inpredicateasdefinedinthispartofISO/IEC13211hasadifferentmeaninginsomeexistingimplementations.
【中国标准分类号】:L74
【国际标准分类号】:35_060
【页数】:216P.;A4
【正文语种】:英语