Vibration parameter measurement using the temporal digital hologram sequence and windowed Fourier transform

(整期优先)网络出版时间:2011-05-15
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Realtimedigitalrecordingandnumericalreconstructionofatemporaldigitalhologramsequencehavebecomefeasibleinrecentyears.Theyprovideanewmeasurementmethodwhichenjoysthevaluableadvantagesofbeingfull-field,noncontactandhighprecision.Inthispaper,acombinedmethodoftemporaldigitalhologramsequenceandwindowedFouriertransformisproposedtomeasurethekinematicparametersofrandomvibration.AseriesofhologramsarerecordedbyCCDcameraandtheoriginalphasecanberecon...