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Use of a reciprocity technique to measure the radiation efficiency of a vibrating structure

The reciprocity principle is well-known and has many applications in acoustics and vibro-acoustics. This paper discusses a reciprocity measurement method to determine the radiation efficiency of a vibrating structure. The method comprises two steps: (i) measurements of the acceleration response of t...

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Main Authors: Putra, Azma, Squicciarini, Giacomo, Thompson, David J., Zhang, Xianying, Salim, Mohd Azli
Format: Article
Language:English
Published: Elsevier Ltd. 2015
Subjects:
TJ Mechanical engineering and machinery
Online Access:http://eprints.utem.edu.my/id/eprint/13575/1/Reciprocity_APAC2014.pdf
http://eprints.utem.edu.my/id/eprint/13575/
https://www.sciencedirect.com/science/article/pii/S0003682X1400245X
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spelling my.utem.eprints.135752023-06-02T15:23:27Z http://eprints.utem.edu.my/id/eprint/13575/ Use of a reciprocity technique to measure the radiation efficiency of a vibrating structure Putra, Azma Squicciarini, Giacomo Thompson, David J. Zhang, Xianying Salim, Mohd Azli TJ Mechanical engineering and machinery The reciprocity principle is well-known and has many applications in acoustics and vibro-acoustics. This paper discusses a reciprocity measurement method to determine the radiation efficiency of a vibrating structure. The method comprises two steps: (i) measurements of the acceleration response of the structure induced by a sound field in a reverberation chamber and (ii) measurements of the spatially-averaged squared transfer mobility of the structure. The approach is more flexible than a direct method and has the advantage that no shaker is required to excite the structure in the acoustic measurements. To demonstrate the applicability of this method, experiments were conducted on rectangular flat plates, on two components of a railway track test-rig and on three different built-up structures. For the plates and the railway rig components, comparisons are also made with theoretical models. It is shown that the measured results for each arrangement obtained using this reciprocity method provide good agreement with conventional direct measurements and with theoretical modelling. However, in most of the examples presented, the direct method has been found to be less practical and sometimes even less accurate than the reciprocal one, mostly due to the structure-shaker connection and to the inherent uncertainty of acoustic intensity measurements. Elsevier Ltd. 2015-03 Article PeerReviewed text en http://eprints.utem.edu.my/id/eprint/13575/1/Reciprocity_APAC2014.pdf Putra, Azma and Squicciarini, Giacomo and Thompson, David J. and Zhang, Xianying and Salim, Mohd Azli (2015) Use of a reciprocity technique to measure the radiation efficiency of a vibrating structure. Applied Acoustics, 89. pp. 107-121. ISSN 0003-682X https://www.sciencedirect.com/science/article/pii/S0003682X1400245X 10.1016/j.apacoust.2014.09.013
institution Universiti Teknikal Malaysia Melaka
building UTEM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknikal Malaysia Melaka
content_source UTEM Institutional Repository
url_provider http://eprints.utem.edu.my/
language English
topic TJ Mechanical engineering and machinery
spellingShingle TJ Mechanical engineering and machinery
Putra, Azma
Squicciarini, Giacomo
Thompson, David J.
Zhang, Xianying
Salim, Mohd Azli
Use of a reciprocity technique to measure the radiation efficiency of a vibrating structure
description The reciprocity principle is well-known and has many applications in acoustics and vibro-acoustics. This paper discusses a reciprocity measurement method to determine the radiation efficiency of a vibrating structure. The method comprises two steps: (i) measurements of the acceleration response of the structure induced by a sound field in a reverberation chamber and (ii) measurements of the spatially-averaged squared transfer mobility of the structure. The approach is more flexible than a direct method and has the advantage that no shaker is required to excite the structure in the acoustic measurements. To demonstrate the applicability of this method, experiments were conducted on rectangular flat plates, on two components of a railway track test-rig and on three different built-up structures. For the plates and the railway rig components, comparisons are also made with theoretical models. It is shown that the measured results for each arrangement obtained using this reciprocity method provide good agreement with conventional direct measurements and with theoretical modelling. However, in most of the examples presented, the direct method has been found to be less practical and sometimes even less accurate than the reciprocal one, mostly due to the structure-shaker connection and to the inherent uncertainty of acoustic intensity measurements.
format Article
author Putra, Azma
Squicciarini, Giacomo
Thompson, David J.
Zhang, Xianying
Salim, Mohd Azli
author_facet Putra, Azma
Squicciarini, Giacomo
Thompson, David J.
Zhang, Xianying
Salim, Mohd Azli
author_sort Putra, Azma
title Use of a reciprocity technique to measure the radiation efficiency of a vibrating structure
title_short Use of a reciprocity technique to measure the radiation efficiency of a vibrating structure
title_full Use of a reciprocity technique to measure the radiation efficiency of a vibrating structure
title_fullStr Use of a reciprocity technique to measure the radiation efficiency of a vibrating structure
title_full_unstemmed Use of a reciprocity technique to measure the radiation efficiency of a vibrating structure
title_sort use of a reciprocity technique to measure the radiation efficiency of a vibrating structure
publisher Elsevier Ltd.
publishDate 2015
url http://eprints.utem.edu.my/id/eprint/13575/1/Reciprocity_APAC2014.pdf
http://eprints.utem.edu.my/id/eprint/13575/
https://www.sciencedirect.com/science/article/pii/S0003682X1400245X
_version_ 1768012339756400640
score 13.211869

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