一種高靈敏度應(yīng)變式傳感器及其在橋梁檢測中的應(yīng)用.pdf

1、華南理工大學碩士學位論文一種高靈敏度應(yīng)變式傳感器及其在橋梁檢測中的應(yīng)用姓名：余和存申請學位級別：碩士專業(yè)：固體力學指導教師：許忠勇20030627華南理工大學工學碩士學位滄文AbstractWiththeeconomicglobalization，thephysicaldistributionindustryisboomingsharplyItpressesMgherdemandontheloadingabilitiesofhighwa

2、ybridgesHowtoexamineandestimatetheloadingabilitiesofbridgesaccuratelyandefficientlyisveryimportanttoguaranteethenormaloperationofthephysicaldistributionInthispaperonthebasisofanalysisofthehotresearchingtopicsanddifficult

3、iesofthetechniqueofbridgetesting，wethinkthatthewayofexaminingthestructuralinformationofbridgesquicklyhassignificantsocialandeconomicalvalueundertheconditionoflightandmovingloadingThispaperisthefirsttoputforwardadesignsch

4、emeofastrainsensortosolvethisproblemThesensorhashighersensitivitythantraditionalstraingaugeTheprincipleofsensor，structuraldesignandproductionisstudiedTheapplicationofsensorhasreceivedanticipatedresultsThefollowingfourpar

5、tsaremainlyconcernedinthispaper：1Inviewoflargespansinbridgestructures，theoperatingprincipleofhighlysensiblestrainsensorrealizingbyscaledistancetransferringisdescribedindetailsItsstructuraldesignschemeisdiscussedindetails

6、Themakeupandconcretesizeofthesensorareproposed2ThemechanicsanalysisofthestructureofthesensorhasbeenexecutedAndtheformulathatcalculatesitssensitivitycoefficientisdeducedTheelasticcomponentandsensor’Ssimulationsareaccompli

7、shedbythefiniteelementaideddesign3TheconcretemodelofsensorhasbeenmadepracticallyThenornlsofthesensor’Sstaticcharacteristicsuchaslinearity，repeatability，hystcresis，andthedynamicfrequencyresponsecharacteristicsarecalibrate

8、dconscientiouslyinlaboratory4ThestrainsensorhasbeenappliedtoengineeringsurveysinrealbridgetestingThetestingresultsindicatethatthesensorhasthefeatureofhighsensitivity，selftemperature—compensation，finefrequencyresponsechar

9、acteristicThetestingsystemdoesnothavetochangeasecondinstrumentandthesensorcanbeuserepeatedlyThesensorisatlowcostwithhighsensitivityItisanidealsensorforitCanexaminethestructuralinformationofbridgesquicklyunderthecondition