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 Wysłany: Nie 0:01, 08 Maj 2011 Temat postu: ed hardy bikinit Dual- sensor measurement and erro |
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Dual- sensor measurement and error analysis Zhenqiang
, J. Soundvjb. ,ed hardy bikinit, 1976 ● 49:221-2306WilliamsEG, DardyHDandFinkRG. Atechniqueformeasurementofstructure-borneintensityinplates. J. Aeoust. SOC. Am. , 1985l78 (6) l2061-20687GoyderGD, whiteRG. Vibrationalpowerflowfrommachinesintobuild-upstructres. J. SoundVib. ,ed hardy danmark, 1980l68l59 a l178FahyFJ. SoundInternsity. ElsevierSciencePublishingCo. . 1989 . One. Call-in toward the Sun Zhaohui , etc. 3 : Two- sensor measurement and error analysis Zhenqiang 259ErrorAnalysisonMeasurementofVibrationIntensityBasedonDualTransducersSunZhaohuiQinIfaomingWa ~ qgChongSunJincai (InstituteofAcousticEngineering.NorthwesternPolytechnicaIUniversityXiall,magasin abercrombie, 710072) AbstractThevibrationintensitymeasurementtechniqueisanimprotantapproachwiththeobjectives0fi-dentifyingandrankingthevibrationtransmissionpathsaswellaslocalizingvibrationsources. Inthispa-per · themeasurementerrors0fthedual-transducermethodcausedbyspatialfinitedifferenceapproxlma-tion, thephasedifferencebetweenthetwotransducersandtheneglectoflnear-fieldcomponent8retheoreti-callyanabzedbywBvetheor * y. 1tisshownthat,ed hardy lippis, foracertainstructur ~ anddistancebetweenthetwotrans-ducers, thefin / tedifferenceprovidestheupperIimitandtheDhasedifferenceglyesthelowerlimitofmen-sur ~ mentfrequencyband-Sincethenearfieldcomponentisneglectedinthistechn | que. acompensationap-proachforthiserrorisprovidedwhichmakesnear-fieldmeasurementposslble. Experimentswerecarriedoutonasteelplatewithsandsupportededges, andsatisfactoryagreementbetweenthetestedandpredicteddatawasobtained. Keywords, structureIvibrationintensity'far-fieldofflexuraiwavejfinitedifferenceapproximationphasematching Sun Zhaohui male first author , lecturer. May 1968 students.
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