MEASURING DISPLACEMENT FIELDS OF CURVED SURFACE BY MOIRE INTERFEROMETRY OF PARTIAL COHERENT LIGHT-中国Betway体育网页登陆

摘要 Thispaperpresentsamethodtomeasurethein-planedisplacementfieldsofcurvedsurfacebymoireinterferometryofpartialcoherentlight.Themethodhasthefollowingadvantages:simpleopticalsystem,norequirementonvibrationisolation,highsensitivity,largemeasuringrange,highcontrastofinterferencefringesandavailabilitytoin-situstructuraltesting.Thepresentpaperalsogivestheoreticalanalysisofthemethodandtheformulasoflightintensityanddisplacementfield,andintroducesareplicationtechniquetoformahighfrequencyreflectancegratingonthecurvedsurface.Theexperimentsachievedthemeasurementofthesurfacedisplacementfieldofacylindricalshell—thesimultaneouscircumferential,axialand45°displacementfields.Thetorsionaltestdataforsurfacedisplacementofacircularbaragreewellwiththetheoreticalresult.

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MEASURING DISPLACEMENT FIELDS OF CURVED SURFACE BY MOIRE INTERFEROMETRY OF PARTIAL COHERENT LIGHT

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