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Dual- sensor measurement and error analysis Zhenqiang

, J. Soundvjb. , 1976 ● 49:221-2306WilliamsEG, DardyHDandFinkRG. Atechniqueformeasurementofstructure-borneintensityinplates. J. Aeoust. SOC. Am. , 1985l78 (6) l2061-20687GoyderGD, whiteRG. Vibrationalpowerflowfrommachinesintobuild-upstructres. J. SoundVib. , 1980l68l59 a l178FahyFJ. SoundInternsity. ElsevierSciencePublishingCo. . 1989 . One. Call-in toward the Sun Zhaohui ,[link widoczny dla zalogowanych], etc. 3 : Two- sensor measurement and error analysis Zhenqiang 259ErrorAnalysisonMeasurementofVibrationIntensityBasedonDualTransducersSunZhaohuiQinIfaomingWa ~ qgChongSunJincai (InstituteofAcousticEngineering.NorthwesternPolytechnicaIUniversityXiall, 710072) AbstractThevibrationintensitymeasurementtechniqueisanimprotantapproachwiththeobjectives0fi-dentifyingandrankingthevibrationtransmissionpathsaswellaslocalizingvibrationsources. Inthispa-per · themeasurementerrors0fthedual-transducermethodcausedbyspatialfinitedifferenceapproxlma-tion, thephasedifferencebetweenthetwotransducersandtheneglectoflnear-fieldcomponent8retheoreti-callyanabzedbywBvetheor * y. 1tisshownthat,[link widoczny dla zalogowanych], foracertainstructur ~ anddistancebetweenthetwotrans-ducers, thefin / tedifferenceprovidestheupperIimitandtheDhasedifferenceglyesthelowerlimitofmen-sur ~ mentfrequencyband-Sincethenearfieldcomponentisneglectedinthistechn | que. acompensationap-proachforthiserrorisprovidedwhichmakesnear-fieldmeasurementposslble. Experimentswerecarriedoutonasteelplatewithsandsupportededges,[link widoczny dla zalogowanych], andsatisfactoryagreementbetweenthetestedandpredicteddatawasobtained. Keywords,[link widoczny dla zalogowanych], structureIvibrationintensity'far-fieldofflexuraiwavejfinitedifferenceapproximationphasematching Sun Zhaohui male first author ,[link widoczny dla zalogowanych], lecturer. May 1968 students.

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