BOTDA分布式光纖應變傳感器的布設工藝試驗研究.pdf

1、東南大學碩士學位論文BOTDA分布式光纖應變傳感器的布設工藝試驗研究姓名：胡惠國申請學位級別：碩士專業(yè)：防災減災及防護工程指導教師：陳忠范20070101東南大學頊上學位論文英文摘要ExperimentalResearchonLayoutTechnicsofBOTDADistributedOpticalFiberStrainSensorADissertationSubmittcdtoSoutheastUniversityFortheAc

2、ademicDegreeofMasterofEngineeringBYHUHuiGuoSupervisedbyProfCHENZhongfanAbstractBrillouin刪TuneDomainAnalysis(BOTDA)isadistributedstrainsensingtechnologybased吼stimulatedBrillouinbackscatteringBeyondthetraditionalpointtypes

3、ensingtechnologyBOTDAcharacterizesdieintrinsiccontinuousmonitoringofthestrainanditcmachievehigherprecisionseuscleng山andspatialresolutionTherefore，asastateoftheartsensingtechnologyitisdrawingattentionsofmanydevelopedcoun仃

4、iestoitsapplicationtothehealthdiagnosisinhugecivilengineeringSomeresearchoutheapplicationofBOTDAisconductedinthisdissertationandtheachievedresultsaleasfoIlows：Thehealthdisgnoses血hugecivilengineeringareessentialandurgentS

5、omec02fltmonstrainmeasuringinslⅢmants’disadvantagesaregiven，withemphasisfilltheopticalfibersensors’advantagesandcharacteristicThesortsoftheol刪fiberseusorsanditspracticalappficationsarepresentcdThedistributedopticalfibers

6、ensingtechnologybasedonstimulatedBrillouinbackscatteringisstressedanditsprtmaryquestionsarepointedouLTheprincipleofthedistributedsensingtechnologybasedonstimulamdBrillouinbackscatteringisintroducedindetailandthetemperatu

7、recompensationmethodsforstrainmeasurementpurposeThemethodstocalibratingthesU2incoefficientandtemperaturecoefficientofthesensingfiberaIediscussedsystematicallyThe刪pIeofstraintransferringalmetopticalfibersensingisintroduce

8、dindetails呲fac咖influencingstraintransferringsuchastheconsistentwithconcrete，thepastes讎ngthbetweenthesensingfiberandconcretealegivenThelayoutmethodoftheextemalandintemalopticalfibersensoraisresearchedindetailTwoexperiment

9、sontheTsteelbeamwithtwokindsofsensingfiberhavebeenconductedBycompingthe$ffainofstraingageandthestrainmeasuredbysensingfiberitcanbedeterminedwhetherthestrainmeasuredbysensingfiberisreliableinaddition，thelocalcompressiveca

10、pacityofsensingfiberpastingonstructuremembersistestedSomeexperimentsareconductedtocheckupwhethersensingfiberembeddedincouorcteisingoodconditionThepastingmethodofadhesiveisgivemkeywords：BOTDA；stimulatedBrilloulnscattering