Accuracy of prediction methods for sound insulation of homogeneous single baffles

• Autorzy: Kosała Krzysztof , Majkut Leszek , Mleczko Dominik , Olszewski Ryszard , Wszołek Tadeusz
• Języki publikacji: EN

Abstrakty

EN

The article presents a comparative analysis of determined spectral responses of the airborne sound insulation of single homogeneous baffles using computational and experimental methods. Calculations using theoretical models, such as mass law, the Sharp and Davy models, SoundFlow software and laboratory tests concerned nine plates made of plastic, steel, aluminium and rubber, which are homogeneous materials. These materials are used in the construction of walls in vibroacoustic protection, such as acoustic barriers, machine operating field shields and sound insulating enclosures. Apart from analysing the spectral responses of the sound insulation of the plates, the weighted single-number sound reduction indices Rw, calculated by using prediction methods and laboratory measurements, were compared. Research has shown computational errors of about 6-7 dB for mass law and the Sharp model and about 3 dB for the Davy and Davy-Sharp models and SoundFlow software.

Słowa kluczowe

EN

sound insulation; homogeneous single baffles; calculation models

PL

izolacyjność akustyczna; pojedyncze przegrody jednorodne; modele obliczeniowe

• Wydawca: Poznan University of Technology. Institute of Applied Mechanics
• Czasopismo: Vibrations in Physical Systems
• Rocznik: 2020
• Tom: Vol. 31, nr 2
• Strony: art. no. 2020210
• Opis fizyczny: Bibliogr. 11 poz., wykr.

Twórcy

autor

Kosała Krzysztof

• AGH University of Science and Technology, Al. Mickiewicza 30, 30-059 Kraków

autor

Majkut Leszek

• AGH University of Science and Technology, Al. Mickiewicza 30, 30-059 Kraków

autor

Mleczko Dominik

• AGH University of Science and Technology, Al. Mickiewicza 30, 30-059 Kraków

autor

Olszewski Ryszard

• AGH University of Science and Technology, Al. Mickiewicza 30, 30-059 Kraków

autor

Wszołek Tadeusz

• AGH University of Science and Technology, Al. Mickiewicza 30, 30-059 Kraków

Bibliografia

• 1. AFMG SoundFlow Software Manual, Ahnert Feistel Media Group, 2011.
• 2. H. Arau, A new contribution to the study of the sound transmission loss of single panels, In: Fortschritte der Akustik FASE/DAGA’82 (1982) 267-270.
• 3. D. A. Bies, C. H. Hansen, Engineering noise control, theory and practice, London and New York, Spon Press, 2009.
• 4. J.L. Davy, Predicting the sound transmission loss of cavity walls, In: Proc. of Interior Noise Climates: National Conference of the Australian Acoustical Society, Australia, Perth, (2009) 1-16.
• 5. K. Kosała, Calculation models for analysing the sound insulating properties of homogeneous single baffles used in vibroacoustic protection, Applied Acoustics, 146 (2019) 108-117.
• 6. K. Kosała, L. Majkut, R. Olszewski, Modelowanie izolacyjności akustycznej przegród Metodą Statystycznej Analizy Energii, Autobusy: technika, eksploatacja, systemy transportowe, 12 (2018) 106-109.
• 7. L. Majkut, R. Olszewski, Modelowanie izolacyjności akustycznej przegród jednorodnych, Autobusy: technika, eksploatacja, systemy transportowe, 12 (2018) 553-556.
• 8. D. Mleczko, T. Wszołek, Effect of diffusing elements in a reverberation room on the results of airborne sound insulation laboratory measurements, Archives of Acoustics, 44(4) (2019) 739-746.
• 9. PN-EN ISO 10140-2 (2011), Acoustics. Laboratory measurement of acoustic insulation of building elements. Part 2: Measurement of airborne sound insulation.
• 10. B.H. Sharp, A study of techniques to increase the sound insulation of building elements, Wyle Laboratories Research Staff, El Segundo, California, 1973.
• 11. T. Wszołek, Uncertainty of sound insulation measurement in laboratory, Archives of Acoustics, 32(4) (2007) 271-278.

Uwagi

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2021).