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Experimental validation of a multi-material acoustic black hole

Beth Austin, Jordan Cheer, Anil Bastola

The Journal of the Acoustical Society of America, Volume: 154, Issue: 4_supplement, Pages: A266 - A266

Swansea University Author: Anil Bastola

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DOI (Published version): 10.1121/10.0023481

Abstract

Geometric acoustic black holes (ABHs) have already been proven as an effective passive vibration control measure in plates and beams. However, the thin geometries inherent to the design raise concerns about the structure’s resistance to damage through fatigue. Multi-material ABHs (MM-ABHs) have been...

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Published in: The Journal of the Acoustical Society of America
ISSN: 0001-4966 1520-8524
Published: Acoustical Society of America (ASA) 2023
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URI: https://cronfa.swan.ac.uk/Record/cronfa65772
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first_indexed 2024-04-25T16:00:01Z
last_indexed 2024-04-25T16:00:01Z
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spelling v2 65772 2024-03-05 Experimental validation of a multi-material acoustic black hole 6775d40c935b36b92058eb10d6454f1a Anil Bastola Anil Bastola true false 2024-03-05 MECH Geometric acoustic black holes (ABHs) have already been proven as an effective passive vibration control measure in plates and beams. However, the thin geometries inherent to the design raise concerns about the structure’s resistance to damage through fatigue. Multi-material ABHs (MM-ABHs) have been proposed as an alternative solution where by the material properties vary along the direction of wave propagation instead of the geometry. This, in theory, produces a change in acoustic impedance without the issues of fatigue seen in the geometric ABHs. Previous work has been performed on the design and modeling of polymer multi-material ABHs. This work discusses practices for experimental measurement and validation of multi-material ABHs produced through additive manufacturing. Journal Article The Journal of the Acoustical Society of America 154 4_supplement A266 A266 Acoustical Society of America (ASA) 0001-4966 1520-8524 1 10 2023 2023-10-01 10.1121/10.0023481 COLLEGE NANME Mechanical Engineering COLLEGE CODE MECH Swansea University 2024-04-25T17:00:42.8707768 2024-03-05T22:17:39.5455926 Faculty of Science and Engineering School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Mechanical Engineering Beth Austin 1 Jordan Cheer 2 Anil Bastola 3
title Experimental validation of a multi-material acoustic black hole
spellingShingle Experimental validation of a multi-material acoustic black hole
Anil Bastola
title_short Experimental validation of a multi-material acoustic black hole
title_full Experimental validation of a multi-material acoustic black hole
title_fullStr Experimental validation of a multi-material acoustic black hole
title_full_unstemmed Experimental validation of a multi-material acoustic black hole
title_sort Experimental validation of a multi-material acoustic black hole
author_id_str_mv 6775d40c935b36b92058eb10d6454f1a
author_id_fullname_str_mv 6775d40c935b36b92058eb10d6454f1a_***_Anil Bastola
author Anil Bastola
author2 Beth Austin
Jordan Cheer
Anil Bastola
format Journal article
container_title The Journal of the Acoustical Society of America
container_volume 154
container_issue 4_supplement
container_start_page A266
publishDate 2023
institution Swansea University
issn 0001-4966
1520-8524
doi_str_mv 10.1121/10.0023481
publisher Acoustical Society of America (ASA)
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Mechanical Engineering{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Mechanical Engineering
document_store_str 0
active_str 0
description Geometric acoustic black holes (ABHs) have already been proven as an effective passive vibration control measure in plates and beams. However, the thin geometries inherent to the design raise concerns about the structure’s resistance to damage through fatigue. Multi-material ABHs (MM-ABHs) have been proposed as an alternative solution where by the material properties vary along the direction of wave propagation instead of the geometry. This, in theory, produces a change in acoustic impedance without the issues of fatigue seen in the geometric ABHs. Previous work has been performed on the design and modeling of polymer multi-material ABHs. This work discusses practices for experimental measurement and validation of multi-material ABHs produced through additive manufacturing.
published_date 2023-10-01T17:00:42Z
_version_ 1797323061567946752
score 11.01438

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