儲罐罐底腐蝕聲發(fā)射檢測信號處理關(guān)鍵技術(shù)研究.pdf

1、天津大學博士學位論文儲罐罐底腐蝕聲發(fā)射檢測信號處理關(guān)鍵技術(shù)研究姓名：王偉魁申請學位級別：博士專業(yè)：儀器科學與技術(shù)；精密儀器及機械指導教師：曾周末201105ABSTRACTTbp礎ectthesecurit)rofoil跚pplyanumberofnationalsn缸egicoilresenrebaLseiscon咖ucting，鋤dtllus廿1enumberofIarge—scaleverticalmetal伽ll【sisgrow

2、tllingrapidlyAsspccialequipment’the鼢佗哆ofstoragetanl【sisve巧importantOnce廿lelea_kageaccidentofata】cll(h印p鉍s，meconsequ朗ceswouldbeveWs“ousTheref0re，朗h鋤cingmonitoringthe伽ll【s’healthyis觚iIIlportantwork雄erthenationals讎tegicoil陀

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4、e縱沁uStic鋤ission(AE)testingforstoragetankisstudiedwhichismainlyfocus噸ontlleAEsi弘aIsprocessiIlg111estudyiIlcludesthefollowiIlg嬲pects：1T1lemsionoftlleAEsignalsisstudied，鋤danewAEsignalsfhsionm甜lod，whichisbasedonclu咖r鋤alysis，

5、isproposed1llenewfhsionmcthodcouIdrajsenleaccumcyofe姍mctingAEevents鋤dreducesi印alnoi∞e疏ctively2Accordingt0廿lerequirementsoftallkb0位omAES0urcepositionin舀thetri鋤gulatepositioningaIgorithm觚d廿1eoVerdete加1incdpositioningalgori

6、thma∞studiedDi虢remsolutionmethodsaredevelopedformet、7∞di俄rentalgorithmshlordertos_tIldynle鉚oalgorithms’positionillgperfonn舳ceunderideal鋤dnonidealconditions，M0nteC訓omethodisusedne托sunwouldbeVe巧me鋤ing血lfor鋤alyzingtheAEsour

7、ces’locationoftaIlkbottom3hlordertoidenti6catc鋤d勰∞ssthecon0sionregionoftaJ成bo們mfbmAEtestingda饑waveletclusteralgorithmisdeVelopedAndtheAES0urcedistributioninf0咖ationen仃0pyisproposedt0嬲sesstheidentificationeffIectTllI0ugh觚

8、alysisoftherealtest陀suhs，tlle啪ge0fp撇酏ers甜ingsinmewaVelctcluSt|胃algorithmis0ptimizedt0raisetheidentificatione伍ciency425oilta幽locatedin11citiesarete妣dbyAEtestingmcthodneimpactsof伽ktyI圮0ntcstresultsa佗柚alyzedThemetllodsofavo

9、idingnoi∞鋤diIlter佗r∞cesignaIsduringthetcstingprocessa艙summ撕zcd，whichwouldbeme觚ing向lfor鏟adingtlle龜rtherAEtestingoft觚kbottom5B孫edontllestudyofAEsi印alprocessinga190rimms，atal：11(bottomAEdata鋤aIysissoftwareisdeVeloped111eS0f