BS ISO 11512-1996 林业机械.覆带式专用机械.制动系统性能标准

上一篇: DIN EN 942-1996 木工作业木材.木材质量通用分类
下一篇: BS EN ISO 3767-5-1996 拖拉机、农业和林业机械、动力除草机和园艺设备.操作员控制装置和其它显示器符号.第5部分:手动便携式林业机械符号

【英文标准名称】:Resistancewelding-Destructivetestingofwelds-Methodforthefatiguetestingofmultispot-weldedspecimens
【原文标准名称】:电阻焊接.焊接破坏性试验.多点疲劳试验方法.焊接样本
【标准号】:BSENISO18592-2009
【标准状态】:现行
【国别】:英国
【发布日期】:2010-01-31
【实施或试行日期】:2010-01-31
【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】:破坏试验;尺寸;疲劳;疲劳分析;疲劳强度;振动应力下的疲劳强度;材料试验;材料;材料测验;金属的;金属;参数;加工工艺;电阻点焊接;电阻焊接;样品;抽样方法;剪应力;点焊;试样;测试;扭转负荷;振动试验;振动应力;焊接接头;焊接的;焊接工程;焊接参数;焊接;焊缝
【英文主题词】:Destructivetesting;Dimensions;Fatigue;Fatigueanalysis;Fatiguestrength;Fatiguestrengthundervibratorystresses;Materialtests;Materials;Materialstesting;Metallic;Metals;Parameters;Productionprocesses;Resistancespotwelding;Resistancewelding;Samples;Samplingmethods;Shearstress;Spotwelding;Testspecimens;Testing;Torsionloads;Vibrationtests;Vibrationalstress;Weldedjoints;Welding;Weldingengineering;Weldingparameters;Weldings;Welds
【摘要】:ThisInternationalStandardspecifiestestspecimensandproceduresforperformingconstantloadamplitudefatiguetestsonmulti-spot-weldedandmulti-axialspecimensinthethicknessrangefrom0,5mmto5mmatroomtemperatureandarelativehumidityofmax.80%.TheapplicabilityofthisInternationalStandardtolargerthicknessescanbelimitedbymechanicalpropertiessuchasyieldstrengthandformabilityofthespecimenmaterial.Thethicknessrangeforadvancedhighstrengthsteels(AHSS)isgenerallybelow3,0mm.Greaterthicknessesapplyforaluminiumalloys,forexample.Dependingonthespecimenused,itispossiblefromtheresultstoevaluatethefatiguebehaviourof:a)spotweldssubjectedtodefineduniformloaddistribution;b)spotweldssubjectedtodefinednon-uniformloaddistribution;c)spotweldssubjectedtodifferentdefinedcombinationsofshear-,peel-andnormal-tensionloads;andd)thetestedspecimen.Multi-spotspecimenswithwhichthedifferentloaddistributionscanberealizedare:1)defineduniformloaddistribution:i)H-specimensforshear-andpeel-loading,(weldssubjectedtouniformshearorpeelloadingtransversetothejointline),ii)single-anddouble-hatspecimenssubjectedtofour-pointbending(spotweldssubjectedtouniformshearloadinthedirectionoftherowofwelds),iii)double-discspecimenundertorsion(spotweldssubjectedtouniformshearload),iv)double-discspecimenundertensileload(spotweldssubjectedtouniformpeelload),v)double-discspecimenundercombinedtorsionandtensileloading,vi)flatmulti-spotspecimensusingdefinedgrips;2)definednon-uniformloaddistribution:i)H-specimenswithmodifiedgrips,ii)modifiedH-specimenswithstandardgrips,iii)modifiedH-specimenswithmodifiedgrips,iv)flatmulti-spotspecimenswithmodifiedgrips,v)modifiedmulti-spotflatspecimenswithstandardgrips,vi)modifiedmulti-spotflatspecimenswithmodifiedgrips;3)definedcombinationsofshear-,peel-andnormal-tensionloads:i)theKS-2specimen,ii)thedoublediscspecimen;4)spotweldssubjectedtoundefinednon-uniformloaddistribution—single-hat,double-hatandsimilarclosedhollowsectionsundertorsion,3-pointbendingand/orinternalpressure.Thespecimensandtestsreferredtounder4)arenotdealtwithfurtherinthisInternationalStandard,becausetheresultsobtainedwiththesespecimensarespecifictothecomponentsastestedandmaynotbegeneralizedorusedforderivingdatapertainingtotheload-carryingbehaviourofthewelds.Resultsobtainedwithsuchtestsaresuitableforcomparingthemechanicalpropertiesofthetestedcomponentswiththoseofsimilarcomponentstestedinthesamemanner.Thesetestsare,however,notsuitableforevaluatingorcomparingtheload-carryingpropertiesofthewelds.Thetestresultsofthefatiguetestsobtainedwithcomponentlikespecimensaresuitableforderivingcriteriafortheselectionofmaterialsandthicknesscombinationsforstructuresandcomponentssubjectedtocyclicloading.Thisstatementisespeciallyrelevantforresultsobtainedwithspecimenswithboundaryconditions,i.e.alocalstiffnesssimilartothatofthestructureinquestion.Theresultsofafatiguetestaresuitablefordirectapplicationtodesignonlywhentheloadingconditionsinserviceandthestiffnessofthedesigninthejointareaareidentical.NOTESpecimensaremodifiedtotakeintoconsiderationconstraintsorspecificdemandsposedbydesign,e.g.smallerthanstandardoverlap,smallerorlargerthanstandardnuggetdiameter,andspecificloaddistribution,thusenhancingthevalueofthetestresultsforthedesignengineer.
【中国标准分类号】:J33
【国际标准分类号】:25_160_40
【页数】:46P.;A4
【正文语种】:英语


【英文标准名称】:ElectricalMetallicTubing-ZincCoated
【原文标准名称】:镀锌电气金属管
【标准号】:ANSIC80.3-1983
【标准状态】:作废
【国别】:
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【发布单位】:美国国家标准学会(US-ANSI)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:
【摘要】:
【中国标准分类号】:
【国际标准分类号】:
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