厚板焊接的表面殘余應力測試方法研究.pdf

1、分類號UDC密級學校代碼10497劣禪擺多次穿學位論文題目英文厚板焊接的表面殘余應力測試方法研究題目仆icknessPlateweldment研究生姓名高望曦姓名一一巴上星一職稱教授學位博士指導教師一—單位名稱武漢理工大學交通學院郵編430063副指導教師姓名一二鰲狙扛一職稱單位名稱中國艦船研究設計中心郵編430060申請學位級別碩士工程領域業(yè)名稱船舶與海洋結構物工程論文提交日期20H年4月論文答辯日期2011年5月學位授予單位武漢理工

2、大學答辯委員會主席評閱人戶戶學位授予日期2010年5月AbstractThestudyofresidualstressoecuPiesaveryimPortantPositioninthefieldoftheweldmentreseareh.Ontheresearehabouttheweldingtecbnology，weusuallytakethosemimbersthattestedbyblindholedrillingmethod

3、asthestandardofthechange’5effeetiveness.InthenumericalsimulationoftheweldingProeess，wealsocomParetheresultwiththeresultthateomesfromtheresidualstressmeasurementmethod.Whenwetrytounderstandthedistributionofresidualstressi

4、ndifferentmaterialsanddifferentweldingtyPes，it’5necessaryfustotakesomeresidualstresstest.AtPresent，therearemanywaystotesttheresidualstress.Butwestilleanotensurethedistributionoftheresidualstress.Thissituation15maiulyeaus

5、edbythelackoftheinterseetionalstudy.EsPeeially，weneedthestudyofehangingthetestingaPProaehbytheintersectionalstudy.AsourawarenesstotheresearehoftheapProaehofthetestingresidualstress15notveryclear，ourstudytothedistribution

6、oftheresidualstress15limited.Forthesamereason，whenweusethefiniteelementsoftwaretosimulatetheweldingProeess，faeingalotofnumericalresultswecannotjudgewhiehkindofsimulationmethod15mesimilartotheaetualdistributionoftheresidu

7、alstress.Basedonthissituation，inthisthesis，1haveehosentheX一raymeasurementmethodandblindholedrillingmethodtotestsomepointsresidualstressinheavyPlateweldment，andcomparedthetwoway’5results.InthispaPer，1havedonesomeexPerimen

8、tabouttheX一raymeasurement’sPre一oPeration.Andthen，1havetestedresidualstressinheavyPlateweldmentintheseetionthatPe印endieulartothewelddireetionwiththeX一raymeasurementmethodandblindholedrillingmethod.Atlast，1havetesttheresid

9、ualstressthatbefeandaftertestingbytheblindholedrillingmethod.Then1madeacontrastbythesetwotestS.Aecordingtotesttheresidualstressofthesurfaeethataftersanding，wefoundthatthesurfaeeaftersandingdoesnoteonfmtothediffractionrul

10、e.FromtheAllgleofX一raymeasurementmethod，weunderstoodthatthere15somethingwrongwithsandingsurface.Then1ProPosedsomesuggestiontotheblindholedrilling.AecordingtotheX一raymeasurementandtheblindholedrillingmethods’resultshowedt