Effective diagnostic of local noise sources with acoustic imaging

• Autorzy: Weyna Stefan
• Języki publikacji: EN

Abstrakty

EN

In this article, the author described methods of visualizing the acoustic flow and showed how these methods can help scientists understand the complex flow of acoustic energy in a real field. A graphical method for determining the distribution of acoustic waves in a real 3D flow field will be presented. Vector imaging of acoustic events is not possible with the use of traditional metrology applied in pressure acoustics. Based on research using measurements of sound intensity and distribution of vector acoustic field by acoustic orthogonal decomposition method (SI-AOD), the article will present examples of practical applications of these analyses. The described measurement technique, including the method of graphical presentation of results, enriches the knowledge about the mechanism of the flow of acoustic energy stream in real working conditions of the source. The SI-AOD analysis system sets a milestone in the monitoring of sound landscapes and the precise finds noise sources.

Słowa kluczowe

EN

sound intensity; acoustic imaging; vibroacoustic; noise abatement

PL

natężenie dźwięku; obrazowanie akustyczne; wibroakustyka; ograniczenie hałasu

• Wydawca: Poznan University of Technology. Institute of Applied Mechanics
• Czasopismo: Vibrations in Physical Systems
• Rocznik: 2019
• Tom: Vol. 30, nr 2
• Strony: art. no. 2019201
• Opis fizyczny: Bibliogr. 5 poz., il. kolor.

Twórcy

autor

Weyna Stefan

• West Pomeranian University of Technology, Marine Technology and Transport Dep., Szczecin, Poland

Bibliografia

• 1. E. G. Williams, Fourier Acoustics - Sound radiation and nearfield holography, Academic Press, San Diego, London, New York 1999.
• 2. S. Weyna, Acoustic intensity imaging methods for in-situ wave propagation, Archives of Acoustics, 35(2) (2010) 265 - 273.
• 3. S. Weyna, Experimental study of sound propagation in open duct with variable geometry, 16-th Int. Congress on Sound and Vibration, ICSV16 S-18, Kraków 2009.
• 4. F. Fahy, Sound Intensity, Elsevier Applied Science, London 1989.
• 5. S. Weyna, The use of Acoustics Vector Decomposition of Sound Fields to Vibroacoustic Protection on Ships, Archives of Acoustics, 42(2) 2017.

Uwagi

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2020).