柔性基体材料封装FBG传感器的应变传递误差分析.pdf

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1、第28卷第4期传感技术学报V01．28N0．42015年4月CHINESEJOURNALOFSENSORSANDACTUATORSApr．2015StrainTransferErrorAnalysisofFlexibleRaw-MaterialPackagedFBGSensorWANGHuaping，ZHOUZhi，LIUWanqiu，WANGJun，CAODandan(1．SchoolofCivilEngineering，DalianUniversityofTechnology，DalianLiaon

2、ing116024，China；2．DepartmentofTrat~portationandlogistics，DalianUniversityofTechnology，DalianLiaoning116024，China)Abstract：Sincetheapplicationofmechanicstheoryandfiniteelementsimulationinpavementisconfinedforthematerialparametersandboundaryconditions，in—s

3、itumonitoringtechnologyisthusadoptedtoobtaintheaccurateandpracticalmechanicalstate．However，thewidelyusedfiberBragggrating(FBG)withhighperformancelimitedtothetraditionalpackagingtechniquescannotmatchtheYoung’Smodulusofdiscretepavementstructure，whichinflu—

4、encesthemonitoring．Therefore，aflexibleraw—materialpackagedsensorisdevelopedtomonitorthestrainofasphaltpavement．whichregardspureasphaltasthec1addingofFBGandsmall—sizeasphaltmixtureastheprotectivelayer．Correspondingmechanicalmodelisestablishedtoexplainthed

5、eformation—efl~ctmechanismandthestraintransfermechanismisanalyzedintheorytoofferrelatederormodificationformula．LaboratoryexperimentiscarriedouttoinvestigatethebehaviorofthedevelopedFBGsensorandthefeasibilityoftheproposedstraintransfererrormodifi—cationfo

6、rmula．Researchresultsillustratethattheflexibleraw—materialpackagedFBGsensorisavailableforthestraindetectionofasphaltconcrete，andtheproposederrormodificationformulacangreatlyeliminateapartofinflu—ence，whichindirectlyguaranteesthehighprecisionrevivificatio

7、nofpracticalstrainofasphaltpavementsandplaysanactiveroleinpromotingthedevelopmentofasphaltpavementhealthmonitoring．Keywords：flexibleraw—materialpackagedFBGsensor；straintransfererormodification；theoreticalanalysisandexperimentalvalidation；asphaltpavementE

8、EACC：0220；7230Edoi：10．3969／j．issn．1004-1699．2015．04．007柔性基体材料封装FBG传感器的应变传递误差分析：l：王花平，周智，刘婉秋，王俊，曹丹丹(1．大连理工大学土木工程学院，辽宁大连116023；2．大连理工大学交通运输学院，辽宁大连l16023)摘要：由于力学理论和有限元仿真应用于道路结构的分析受材料参数与边界条件等因素影响较大，要获得其准确、真实的受力状态，需借助原位监测技术。然而，