Estimation of effective parameters for microperforated panel absorbers and applications

D. W. Herrin; J. Liu; X. Hua

Estimation of effective parameters for microperforated panel absorbers and applications

Mechanical and Aerospace Engineering

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

Abstract

Microperforated panel absorbers are used in many noise control applications as an alternative to fibrous materials. Perforations were typically circular in shape in the past. Nowadays, slits are often sheared or cut into the material. Slits are non-circular and irregular shaped, and are difficult to model due to the fact that geometric parameters like slit size and porosity are difficult to measure. An inverse method using a nonlinear least squares data-fitting algorithm is utilized to estimate geometric parameters from measured absorption coefficient data. The circular perforation model proposed by Maa is used in the algorithm. The estimated geometric parameters are used to further calculate transfer impedance and transfer matrix with good agreement compared to measured data. The same algorithm is used to aid in understanding the effect of dust contamination on the performance of microperforated panel absorbers. In addition, the algorithm is used to examine the extent of manufacturing variations. Copyright

Original language	English
Title of host publication	42nd International Congress and Exposition on Noise Control Engineering 2013, INTER-NOISE 2013
Subtitle of host publication	Noise Control for Quality of Life
Pages	4229-4237
Number of pages	9
State	Published - 2013
Event	42nd International Congress and Exposition on Noise Control Engineering 2013: Noise Control for Quality of Life, INTER-NOISE 2013 - Innsbruck, Austria Duration: Sep 15 2013 → Sep 18 2013

Publication series

Name	42nd International Congress and Exposition on Noise Control Engineering 2013, INTER-NOISE 2013: Noise Control for Quality of Life
Volume	5

Conference

Conference	42nd International Congress and Exposition on Noise Control Engineering 2013: Noise Control for Quality of Life, INTER-NOISE 2013
Country/Territory	Austria
City	Innsbruck
Period	9/15/13 → 9/18/13

Bibliographical note

Funding Information:
The authors are grateful for the support of the Vibro-Acoustics Consortium.

Keywords

Micro-perforated panels
Passive absorbers

ASJC Scopus subject areas

Acoustics and Ultrasonics

Cite this

Herrin, D. W., Liu, J., & Hua, X. (2013). Estimation of effective parameters for microperforated panel absorbers and applications. In 42nd International Congress and Exposition on Noise Control Engineering 2013, INTER-NOISE 2013: Noise Control for Quality of Life (pp. 4229-4237). (42nd International Congress and Exposition on Noise Control Engineering 2013, INTER-NOISE 2013: Noise Control for Quality of Life; Vol. 5).

Herrin, D. W. ; Liu, J. ; Hua, X. / Estimation of effective parameters for microperforated panel absorbers and applications. 42nd International Congress and Exposition on Noise Control Engineering 2013, INTER-NOISE 2013: Noise Control for Quality of Life. 2013. pp. 4229-4237 (42nd International Congress and Exposition on Noise Control Engineering 2013, INTER-NOISE 2013: Noise Control for Quality of Life).

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abstract = "Microperforated panel absorbers are used in many noise control applications as an alternative to fibrous materials. Perforations were typically circular in shape in the past. Nowadays, slits are often sheared or cut into the material. Slits are non-circular and irregular shaped, and are difficult to model due to the fact that geometric parameters like slit size and porosity are difficult to measure. An inverse method using a nonlinear least squares data-fitting algorithm is utilized to estimate geometric parameters from measured absorption coefficient data. The circular perforation model proposed by Maa is used in the algorithm. The estimated geometric parameters are used to further calculate transfer impedance and transfer matrix with good agreement compared to measured data. The same algorithm is used to aid in understanding the effect of dust contamination on the performance of microperforated panel absorbers. In addition, the algorithm is used to examine the extent of manufacturing variations. Copyright",

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author = "Herrin, {D. W.} and J. Liu and X. Hua",

note = "Funding Information: The authors are grateful for the support of the Vibro-Acoustics Consortium. ; 42nd International Congress and Exposition on Noise Control Engineering 2013: Noise Control for Quality of Life, INTER-NOISE 2013 ; Conference date: 15-09-2013 Through 18-09-2013",

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series = "42nd International Congress and Exposition on Noise Control Engineering 2013, INTER-NOISE 2013: Noise Control for Quality of Life",

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Herrin, DW, Liu, J & Hua, X 2013, Estimation of effective parameters for microperforated panel absorbers and applications. in 42nd International Congress and Exposition on Noise Control Engineering 2013, INTER-NOISE 2013: Noise Control for Quality of Life. 42nd International Congress and Exposition on Noise Control Engineering 2013, INTER-NOISE 2013: Noise Control for Quality of Life, vol. 5, pp. 4229-4237, 42nd International Congress and Exposition on Noise Control Engineering 2013: Noise Control for Quality of Life, INTER-NOISE 2013, Innsbruck, Austria, 9/15/13.

Estimation of effective parameters for microperforated panel absorbers and applications. / Herrin, D. W.; Liu, J.; Hua, X.
42nd International Congress and Exposition on Noise Control Engineering 2013, INTER-NOISE 2013: Noise Control for Quality of Life. 2013. p. 4229-4237 (42nd International Congress and Exposition on Noise Control Engineering 2013, INTER-NOISE 2013: Noise Control for Quality of Life; Vol. 5).

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

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Herrin DW, Liu J, Hua X. Estimation of effective parameters for microperforated panel absorbers and applications. In 42nd International Congress and Exposition on Noise Control Engineering 2013, INTER-NOISE 2013: Noise Control for Quality of Life. 2013. p. 4229-4237. (42nd International Congress and Exposition on Noise Control Engineering 2013, INTER-NOISE 2013: Noise Control for Quality of Life).

Estimation of effective parameters for microperforated panel absorbers and applications

Abstract

Publication series

Conference

Bibliographical note

Keywords

ASJC Scopus subject areas

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