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In-situ characterisation of structure borne noise from a building mounted wind turbine

Elliott, AS and Moorhouse, AT 2010, In-situ characterisation of structure borne noise from a building mounted wind turbine , in: ISMA 2010, 20 - 22 September 2010, Katholieke Universiteit Leuven, Belgium..

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    Abstract

    Building mounted micro wind turbines (BMWTs) could potentially provide a useful contribution to renewable energy production but a means of predicting structure-borne sound and vibration is required. A particular difficulty is that BMWTs can only be operated when properly installed, therefore any source characterization measurements must be conducted in situ. Methods such as inverse force synthesis are possible but would only give a description of the source activity for a specific case. This paper describes the application of a new source characterization procedure whereby a source (BMWT) is characterized in terms of blocked forces measured in-situ. The main advantages of the approach are that (1) all required measurements can be performed in-situ and (2) the blocked forces obtained are an independent property of the source and can therefore be transferred to predict levels in different installations. Examples of measurements on idealized structures and on a mock-up wind turbine installation are given. The validity of the approach is confirmed by comparing measured and predicted velocity at different points on the same receiver structure and in a different receiver structure.

    Item Type: Conference or Workshop Item (Paper)
    Uncontrolled Keywords: Structure borne sound, in-situ, blocked force, vibration, acoustics
    Themes: Subjects / Themes > Q Science > Q Science (General)
    Subjects / Themes > Q Science > QC Physics > QC221-246 Acoustics - Sound
    Subjects / Themes > T Technology > T Technology (General)
    Subjects outside of the University Themes
    Schools: Colleges and Schools > College of Science & Technology
    Colleges and Schools > College of Science & Technology > School of Computing, Science and Engineering
    Colleges and Schools > College of Science & Technology > School of Computing, Science and Engineering > Acoustics Research Centre
    Journal or Publication Title: PROCEEDINGS OF ISMA2010
    Publisher: Katholieke Universiteit Leuven
    Refereed: No
    Funders: Engineering and Physical Sciences Research Council (EPSRC)
    Depositing User: AS Elliott
    Date Deposited: 19 Oct 2010 14:29
    Last Modified: 20 Jan 2014 20:53
    References: [1] T ten Wolde, G. R. Gadefelt, Development of standard measurement methods for structure borne sound emission, Noise Control Engineering Journal, Vol 28, No. 1 (1987), pp 5-14. [2] International Standards Organisation. ISO 9611:1996 Acoustics – characterization of sources of structure-borne sound with respect to sound radiation from connected structures. Measurement of velocity at the contact points of machinery when resiliently mounted, (1996). [3] LMS application notes on transfer path analysis. The Qualification and Quantification of Vibroacoustic Transfer Paths. (1995). [4] A. Gaudin and L. Gagliardini, Recent improvements in road noise control. SAE 2007 Noise and Vibration Conference and Exhibition. SAE International, (2007). [5] A. T. Moorhouse, A. S. Elliott, T. A. Evans, In-situ Measurement of the blocked force of structureborne sound sources. Journal of Sound and Vibration, Vol 325, No. 4-5, (2009) Elsevier, pp 679-685. [6] A. S. Elliott, Chracterisation of structure borne sound sources in-situ. PhD Thesis, University of Salford, Salford, UK, 2009. [7] M. Bauer, A. T. Moorhouse, T. Alber, Indirect In-situ determination of blocked forces. DAGA 2010, Berlin, (2010). [8] A. T. Moorhouse, A. S. Elliott, Application of an in-situ measurement method for characterisation of structure-borne sound generated by building-mounted wind turbines. Internoise 2010, Lisbon, (2010).
    URI: http://usir.salford.ac.uk/id/eprint/11286

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