 Posted: Sat 22:47, 07 May 2011 Post subject: hollister Distinguish between the sound of the air |
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Distinguish between the sound of the air mass struetur ~ borneNoiseinaG0hera1AviationAircFaft, NASACR a 159,099 . Aug. , 1979:2] Lois, A ... RMcgary, M. C. : StudiesofTransmissioninAdvancedCornpositeMateria1Structures, ACEECompositeStructureConference,ed hardy bikinit, 1984 [3] Beranek,hollister, LLNoiseandVibrationContro1. McGraw-Hill, Inc. [4] Fahy, F ... JSoundandStructuralibration, AcademicPresslnc. [53GadeSSoandIntensity (Theory) andSoundIntensity (InstrumentatlonandApp1icati0ns), accounting & KTechnicalReviews, No. 3andNo. 4,1982 [8] Bockboff, M. : SomeRemarksontheContinuousSweepingMethodinSoundPowerDetermlnation, ProceedingsofINTER-NoIsE,abercrombie et fitch, 1984StudyonSeparatingAirborneandStructureborneNoisesHuZhangweiYinJianping (NanjingAeronauticalInstitute) bstractItisimportanttoknowthepredomlnantsourc0COntributedtothecabinnoiseinredutingthenoisein. theaircraft, 5othatthereasonableandeffectienoisecontroltreatmentcanbeused. Thenoiseenteringthecabincftheaircraftismain1Ydividedintotwomajorcategoties, viz, airborneexcitingnoiseandmechanicexcitingnoise. Thefofreeriscalledairhornenoiseforthecoatrihutiontothecabinnseandthelatterstructnrebornenoise. Theformulaeforseparatingthemafederivedusingtwomicropboneaconsticintensitymethodinthetwotypesofexcitati0nintermsofthedifferenceintheairborneandstTucturebofnenoiseradlationefficienciesfortheaircraftfuselage. Theexperimentsseparatingtheairbornenoiseandstruetu-rebornenoiseareperformedusingtbeseformulaeonauniformplateandari'bbedplateseparately. Theagreementbeteenthepredictedandtheexperimenta1resuhsisfairlygood. keywordsIairbornenoise,Franklin Marshall pas cher, structurebornenoise, cabinnoise, separating. soundintensitymethod 相关的主题文章： tory burch outlet Packaging and decoration printin oakley solbriller Beijing mechanic successful intr mac cosmetics discount Packaging industry -funded enterprise |
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