基于光纤光栅传感的管路应变测量与模态分析

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1、parameterisobtainedbyexperimentalmodalanalysisandoperationalmodalanalysisrespectively.Theresultsindicatethattheexperimentalresultsareconsistentwiththetheoreticalvalues,anditisfeasibletoutilizeFBGonstrainmeasurementandmodalanalysisonpipeline.4.FBGsareutilizedonstrainmeasurementandmodalanalysis

2、onpipeoftheengine,andthemeasuredparameters,includingnaturalfrequencyandstrainmodalshape,meetwiththetheoreticalvalues.Meanwhile,theresultsofFBGsareaccurateandvalidthroughcomparisontothatofaccelerometers.Furthermore,FBGsarecapableofreflectingtheactualcharacteristicsofpipelinesbecauseofitsneglig

3、iblemass,whichisbetterthantheaddedmassofaccelerometerleadingtodecreasingofnaturalfrequencyofpipeline.Atlast,FBGssupplythepipelineoftheenginewithstrainmeasurement,modalanalysisandstrainmodalparameters,whentheengineisinstaticcondition.Keywords：FiberBraggGratingsensor(FBGs),Pipeline,Strain,Modal

4、analysis,TransmissibilityIII万方数据目录摘要...........................................................................................................................IAbstract......................................................................................................................II第1章绪论

5、.............................................................................................................11.1课题来源.........................................................................................................11.2研究背景及意义............................................................

6、.................................11.3国内外研究现状.............................................................................................21.3.1管路应变测量的研究现状..................................................................21.3.2光纤光栅传感器在振动检测方面的应用..........................................41.3.3应变

7、模态分析的研究现状..................................................................51.4论文的主要研究内容.....................................................................................6第2章管路振动的频域特性分析......................................................