FailureAnalysisonTurbineHousinginAutomotiveTurbochargerUsingSimulationandMeasurement

FailureAnalysisonTurbineHousinginAutomotiveTurbochargerUsingSimulationandMeasurement.pdf
Inthisworkwepresentafailureinvestigationonturbinehousingusedinautomotivedieselturbochargedenginewhichhadrunabout50,300km,whiletheexpectedlifewas100,000km.Theturbinehousingwhichwasmadeofductileironwithhighsili-conandmolybdenumelementtopromotespecificpropertieshadpenetratedcrackthatledtoengineperformancedrop.Thecrackrootcauseidentificationwascarriedoutthroughchemicalanalysis,finiteelementanalysis,castingsimulationandresidualstressmeasure-ment.Thechemicalcompositionresultscompliedwiththedesignspecificationandhardnesstestingresultswereinaccordancewiththeminimumhardnessrequirement.Thefiniteelementanalysisalsoshowedthecrackinglocationhadnoplasticstrainwhichstatedthefailurewasnotfromsevereenginedutycycle.Whilethecastingsimulationshowedthefailurewastriggeredbybigcastingresidualstress.Asub-sequentresidualstressmeasurementidentifiedthefailurerootcauseaswell.Theoverallresultsindicatedthatanimprovedpouringsystemwasneededtoreducecastingresidualstressandpreventsamefailure.
作者：WangHaibin GuoHenry
作者单位：HoneywellAutomotivePartsServices(Shanghai)Co.,Ltd.HoneywellIntegratedTechnology(China)Co.,Ltd.
母体文献：第19届亚太汽车工程年会暨2017中国汽车工程学会年会论文集
会议名称：第19届亚太汽车工程年会暨2017中国汽车工程学会年会  
会议时间：2017年10月24日
会议地点：上海
主办单位：中国汽车工程学会
语种：chi
分类号：
关键词：dieselengine  turbocharger  turbinehousing  failureanalysis  chemicalanalysis  finiteelementanalysis  castingsimulation  residualstressmeasurement
在线出版日期：2020年7月9日
基金项目：
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