摘要撰写说明及模板

《摘要撰写说明及模板》由会员上传分享，免费在线阅读，更多相关内容在工程资料-天天文库。

1、摘要撰写说明及模板摘要应包含以下主要内容：研究目的/问题研究方法主要结果/发现成果意义/对未来研究的启示摘要格式说明如下表所示。摘要模板详见后面两页。表一摘要格式说明文档类型Word97/2003/2007/2010纸张大小A4页边距上21mm，下21mm，左21mm，右21mm行距英文行距13pt，中文行距17pt；题目除外字体字号（pt）对齐方式备注英文中文题目TimesNewRoman宋体14居中粗体，行距18pt作者TimesNewRoman宋体11居中段前8pt，段后8pt所属单位Cambria楷

2、体GB_23128居中字体倾斜E-mailCambria/8居中字体倾斜摘要TimesNewRoman楷体GB_231210两端对齐“摘要”二字粗体；段前8pt，段后8pt关键词TimesNewRoman宋体10两端对齐“关键词”三字粗体QuantitativeAnalysisofSurfaceFlowBehaviorofMoltenPoolinLaserWeldingBasedonParticleImageVelocimetry基于PIV方法的激光焊接熔池表面流动定量分析†XianfengSHEN(沈显峰),Ba

3、oruiWANG(王宝瑞),WenhuaTENG(滕文华),WeichaoZHANG(张伟超),ChaoXU(许超)InstituteofMachineryManufacturingTechnology,ChinaAcademyofEngineeringPhysics,Mianyang621900,China中国工程物理研究院机械制造工艺研究所，四川绵阳621900†Email:xianfeng_shen@163.comAbstract:Flowbehaviorisoneoftheessentialcharacte

4、risticsofthelaserweldingwhichdominatetheformationofweldingdefectsincludingundercutandporosity.Lackofquantitativeevaluationmethodofsuchbehaviorrestrictsthefurtherimprovementofthequalityoflaserwelding.AmethodforthisquantitativeanalysiswastriedbyusingPIVlabtoolwh

5、ichbasedonparticleimagevelocimetryalgorithm,onthemoltenpoolimagescapturedbythehigh-speedcameraimagewhileparticleswerenotusedintheexperimentswhichisusuallyusedinPIVmeasurement.Theresultsshowedthatthemoltenmetalflowsaroundthekeyholeandtwoconvectionloopssituatest

6、herearofthemoltenpool.Peakvelocitywerefoundatthezonebehindthekeyholeandrelativehighvelocitycanbefoundatthezonesalongtwosidesofkeyhole,whichmaybeduetohighertemperatureandbetterfluidityatthesezonescausedbytheeruptionofplasmainsidekeyhole.Theweldingspeedperpendic

7、ulartoweldingdirectionisapproximatelytwiceasthespeedofalongtheweldingdirectionwhichpartlyoffsetsbytheforwardmovementofrearmoltenmetalwithinthemoltenpoolcausedbyfluiddynamicpressure.Vorticitydistributionsaroundthemoltenpoolindicatethattherearetwolargevortices,a

8、vortexaroundthekeyholeisinducedbykeyholeeruption;anotheroneattherearofmoltenpoolistheresultofconfrontbetweenplasmaeruptionandtheflowofliquidmetalofrearmoltenpool.Keywords:LaserWeld