Detail publikačního výsledku

Non-negative intensity and back-calculated non-negative intensity for analysis of directional structure-borne sound

LIU, D.; HAVRÁNEK, Z.; MARBURG, S.; PETERS, H.; KESSISSOGLOU, N.

Originální název

Non-negative intensity and back-calculated non-negative intensity for analysis of directional structure-borne sound

Anglický název

Non-negative intensity and back-calculated non-negative intensity for analysis of directional structure-borne sound

Druh

Článek WoS

Originální abstrakt

Non-negative intensity (NNI) is an approach to identify the surface areas of a structure that contribute to sound power. NNI is evaluated in terms of the acoustic impedance matrix obtained directly at the structural surface and as such can only identify surface contributions to sound power at a far-field receiver surface that fully circumscribes the structure. In contrast, back-calculated NNI is evaluated in terms of the acoustic impedance matrix obtained at a far-field receiver surface, and hence can identify surface contributions to sound power at a far-field receiver surface that does not fully circumscribe the structure. In this work, NNI and acoustic intensity obtained numerically using the boundary element method and experimentally from near-field acoustic holography measurements are compared for different modes. Back-calculated NNI evaluated for full and partial receiver surfaces is also compared with acoustic intensity for the different modes. Results for back-calculated NNI show that different regions on the plate surface contribute sound to different receiver locations.

Anglický abstrakt

Non-negative intensity (NNI) is an approach to identify the surface areas of a structure that contribute to sound power. NNI is evaluated in terms of the acoustic impedance matrix obtained directly at the structural surface and as such can only identify surface contributions to sound power at a far-field receiver surface that fully circumscribes the structure. In contrast, back-calculated NNI is evaluated in terms of the acoustic impedance matrix obtained at a far-field receiver surface, and hence can identify surface contributions to sound power at a far-field receiver surface that does not fully circumscribe the structure. In this work, NNI and acoustic intensity obtained numerically using the boundary element method and experimentally from near-field acoustic holography measurements are compared for different modes. Back-calculated NNI evaluated for full and partial receiver surfaces is also compared with acoustic intensity for the different modes. Results for back-calculated NNI show that different regions on the plate surface contribute sound to different receiver locations.

Klíčová slova

non-negative intensity, near-field acoustic holography, boundary element method

Klíčová slova v angličtině

non-negative intensity, near-field acoustic holography, boundary element method

Autoři

LIU, D.; HAVRÁNEK, Z.; MARBURG, S.; PETERS, H.; KESSISSOGLOU, N.

Rok RIV

2018

Vydáno

11.07.2017

Nakladatel

AIP Publishing

Místo

1305 Walt Whitman Road, Melville, NY 11747-4300, USA

ISSN

0001-4966

Periodikum

JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA

Svazek

142

Číslo

1

Stát

Spojené státy americké

Strany od

117

Strany do

123

Strany počet

7

URL

http://asa.scitation.org/doi/full/10.1121/1.4990374

BibTex

@article{BUT137773,
  author="Daipei {Liu} and Zdeněk {Havránek} and Steffen {Marburg} and Herwig {Peters} and Nicole {Kessissoglou}",
  title="Non-negative intensity and back-calculated non-negative intensity for analysis of directional structure-borne sound",
  journal="JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA",
  year="2017",
  volume="142",
  number="1",
  pages="117--123",
  doi="10.1121/1.4990374",
  issn="0001-4966",
  url="http://asa.scitation.org/doi/full/10.1121/1.4990374"
}

Dokumenty

Liu-Havranek_Non_negative_intensity_JASA