In situ sound absorption measurement: investigations on oblique incidence

E.R. Kuipers; Ysbrand H. Wijnant; Andries de Boer

In situ sound absorption measurement: investigations on oblique incidence

E.R. Kuipers, Ysbrand H. Wijnant, Andries de Boer

Faculty of Engineering Technology

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic › peer-review

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Abstract

A novel method for the measurement of sound absorption has been developed. By assuming that, in a single point, the sound field consists of an incident- and a reflected plane wave, the locally incident- and reflected intensities can be determined. To this purpose, the active intensity and the sum of the potential-and the kinetic energy density (only the particle velocity component in the direction of interest is used) are measured. For normal incidence, the method was validated. Here, the method is applied to cases with oblique sound incidence. The influence of the angle of incidence and the non-planarity of the incident and reflected waves on the accuracy of the sound absorption coefficient are investigated. Analytical models as well as FE-simulations were applied to describe a few typical cases. Finally, parameter bounds for some applications will be given.

Original language	German
Title of host publication	DAGA 2012 Darmstadt
Editors	M. Klemenz
Place of Publication	Berlin
Publisher	DEGA
Pages	351-352
Publication status	Published - 19 Mar 2012
Event	38. Jahrestagung für Akustik, DAGA 2012 - Technischen Universität Darmstadt, Darmstadt, Germany Duration: 19 Mar 2012 → 22 Mar 2012 Conference number: 38

Conference

Conference	38. Jahrestagung für Akustik, DAGA 2012
Abbreviated title	DAGA
Country/Territory	Germany
City	Darmstadt
Period	19/03/12 → 22/03/12

Keywords

IR-80873
METIS-287091

Access to Document

FullText_Kuipers_DAGA2012_0293

Cite this

@inproceedings{d9a90cc9e32240cba82d1b3c06d06023,

title = "In situ sound absorption measurement: investigations on oblique incidence",

abstract = "A novel method for the measurement of sound absorption has been developed. By assuming that, in a single point, the sound field consists of an incident- and a reflected plane wave, the locally incident- and reflected intensities can be determined. To this purpose, the active intensity and the sum of the potential-and the kinetic energy density (only the particle velocity component in the direction of interest is used) are measured. For normal incidence, the method was validated. Here, the method is applied to cases with oblique sound incidence. The influence of the angle of incidence and the non-planarity of the incident and reflected waves on the accuracy of the sound absorption coefficient are investigated. Analytical models as well as FE-simulations were applied to describe a few typical cases. Finally, parameter bounds for some applications will be given.",

keywords = "IR-80873, METIS-287091",

author = "E.R. Kuipers and Wijnant, {Ysbrand H.} and {de Boer}, Andries",

year = "2012",

month = mar,

day = "19",

language = "German",

pages = "351--352",

editor = "M. Klemenz",

booktitle = "DAGA 2012 Darmstadt",

publisher = "DEGA",

note = "null ; Conference date: 19-03-2012 Through 22-03-2012",

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TY - GEN

T1 - In situ sound absorption measurement: investigations on oblique incidence

AU - Kuipers, E.R.

AU - Wijnant, Ysbrand H.

AU - de Boer, Andries

N1 - Conference code: 38

PY - 2012/3/19

Y1 - 2012/3/19

N2 - A novel method for the measurement of sound absorption has been developed. By assuming that, in a single point, the sound field consists of an incident- and a reflected plane wave, the locally incident- and reflected intensities can be determined. To this purpose, the active intensity and the sum of the potential-and the kinetic energy density (only the particle velocity component in the direction of interest is used) are measured. For normal incidence, the method was validated. Here, the method is applied to cases with oblique sound incidence. The influence of the angle of incidence and the non-planarity of the incident and reflected waves on the accuracy of the sound absorption coefficient are investigated. Analytical models as well as FE-simulations were applied to describe a few typical cases. Finally, parameter bounds for some applications will be given.

AB - A novel method for the measurement of sound absorption has been developed. By assuming that, in a single point, the sound field consists of an incident- and a reflected plane wave, the locally incident- and reflected intensities can be determined. To this purpose, the active intensity and the sum of the potential-and the kinetic energy density (only the particle velocity component in the direction of interest is used) are measured. For normal incidence, the method was validated. Here, the method is applied to cases with oblique sound incidence. The influence of the angle of incidence and the non-planarity of the incident and reflected waves on the accuracy of the sound absorption coefficient are investigated. Analytical models as well as FE-simulations were applied to describe a few typical cases. Finally, parameter bounds for some applications will be given.

KW - IR-80873

KW - METIS-287091

M3 - Conference contribution

SP - 351

EP - 352

BT - DAGA 2012 Darmstadt

A2 - Klemenz, M.

PB - DEGA

CY - Berlin

Y2 - 19 March 2012 through 22 March 2012

ER -