预览加载中,请您耐心等待几秒...
1/3
2/3
3/3

在线预览结束,喜欢就下载吧,查找使用更方便

如果您无法下载资料,请参考说明:

1、部分资料下载需要金币,请确保您的账户上有足够的金币

2、已购买过的文档,再次下载不重复扣费

3、资料包下载后请先用软件解压,在使用对应软件打开

基于共源式导波合成聚焦算法的管道缺陷成像技术 Abstract: Pipelinedefectscancausesignificanteconomiclossesandposepotentialsafetyhazards.Imagingtechnologycanprovideapowerfultoolforpipelinedefectdetectionanddiagnosis.Inthispaper,weintroducethecommonpipelinedefectimagingtechnologiesandfocusontheultrasoundimagingtechnologybasedonthesyntheticaperturefocusingtechnique.Specifically,weintroducethebasicprinciple,advantages,andlimitationsofthetechnique.Wealsodiscussthedevelopmentsandrecentadvancesinthefieldandprovidesomepossiblefuturedirections. Introduction: Pipelinedefectsareinevitableduetovariousreasons,suchascorrosion,crack,deformation,etc.Thesedefectsnotonlycausesignificanteconomiclossesbutalsoposepotentialsafetyhazards.Therefore,detectinganddiagnosingpipelinedefectsiscriticalforpipelineoperationandmaintenance.Imagingtechnologyhasbeenwidelyusedtodetectpipelinedefects.Therearevariousimagingtechniquesavailable,includingX-ray,ultrasonic,magnetic,etc.Amongthem,theultrasoundimagingtechnologyhasbeenconsideredasoneofthemostpromisingtechniques.Inthispaper,wewilldiscusstheultrasoundimagingtechnologybasedonthesyntheticaperturefocusingtechnique. BasicPrinciple: Thesyntheticaperturefocusingtechniqueisakindofphased-arrayultrasoundimagingtechniquethatcanproducehigh-qualityimagesofpipelinedefects.Thebasicprincipleistousemultipletransducersarrangedinanarraytotransmitandreceiveultrasoundwaves.Theechoesreceivedbydifferenttransducerscanbecombinedtosynthesizeanaperturemuchlargerthanthatofanyindividualtransducer.Then,byusingsophisticatedsignalprocessingalgorithms,theresultingdatacanbefocusedinbothtransmitandreceivedirectionstoproducehigh-resolutionimagesofpipelinedefects. Advantages: Thesyntheticaperturefocusingtechniquehasseveraladvantagesoverotherultrasoundimagingtechniques.Firstly,itcanprovideahighlateralresolutionduetothelargeaperturesynthesizedbymultipletransducers.Secondly,itcanachieveahighlongitudinalresolutionbyusingshortpulsesandhigh-frequencyultrasoundwaves.Thirdly,itcanprovidealargedepthoffieldduetothefoc