Deformation Dependent Sound Absorption Property of a Novel Magnetorheological Membrane Sound Absorber
A novel membrane sound absorber based on the magnetorheological membrane (MRM) is developed for active sound absorption. Due to its good flexibility and stretch-ability, the MRM consisting of carbonyl iron particles (CIPs) and polydimethylsiloxane elastomer matrix can be easily deformed. The deforma...
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| Format: | Article |
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Frontiers Media S.A.
2020-10-01
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| Series: | Frontiers in Materials |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fmats.2020.598973/full |
| _version_ | 1819113075764101120 |
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| author | Chuanlin Sun Xufeng Cao Xiaoling Zhou Xinglong Gong Shouhu Xuan |
| author_facet | Chuanlin Sun Xufeng Cao Xiaoling Zhou Xinglong Gong Shouhu Xuan |
| author_sort | Chuanlin Sun |
| collection | DOAJ |
| description | A novel membrane sound absorber based on the magnetorheological membrane (MRM) is developed for active sound absorption. Due to its good flexibility and stretch-ability, the MRM consisting of carbonyl iron particles (CIPs) and polydimethylsiloxane elastomer matrix can be easily deformed. The deformation of MRM is investigated by the digital image correlation method. The off-plane displacement is positively related to both of the CIPs mass fractions and magnetic field strength. The sound absorption performance of MRM sound absorber is investigated and it is found that the thickness of the membrane, CIPs mass fractions, and air cavity length behind the membrane significantly influence the sound absorption performance. The magnetic field can adjust the sound absorption frequency without affecting the high acoustical absorption coefficients. The double-layer membrane structure has two sound absorption peaks within the testing frequency range and further improves the frequency adjustability of the sound absorber. Therefore, it is expected to be a particularly promising alternative for active sound absorption. Finally, the numerical solutions calculated by the equivalent circuit method also support the experimental results. |
| first_indexed | 2024-12-22T04:23:38Z |
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| id | doaj.art-6a9c333d79f84cda8202c6ca4b3ae6aa |
| institution | Directory Open Access Journal |
| issn | 2296-8016 |
| language | English |
| last_indexed | 2024-12-22T04:23:38Z |
| publishDate | 2020-10-01 |
| publisher | Frontiers Media S.A. |
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| series | Frontiers in Materials |
| spelling | doaj.art-6a9c333d79f84cda8202c6ca4b3ae6aa2022-12-21T18:39:13ZengFrontiers Media S.A.Frontiers in Materials2296-80162020-10-01710.3389/fmats.2020.598973598973Deformation Dependent Sound Absorption Property of a Novel Magnetorheological Membrane Sound AbsorberChuanlin Sun0Xufeng Cao1Xiaoling Zhou2Xinglong Gong3Shouhu Xuan4CAS Key Laboratory of Mechanical Behavior and Design of Materials, CAS Center for Excellence in Complex System Mechanics, Department of Modern Mechanics, University of Science and Technology of China (USTC), Hefei, ChinaCAS Key Laboratory of Mechanical Behavior and Design of Materials, CAS Center for Excellence in Complex System Mechanics, Department of Modern Mechanics, University of Science and Technology of China (USTC), Hefei, ChinaShanghai Key Laboratory of Spacecraft Mechanism, Shanghai Institute of Aerospace System Engineering, Shanghai, ChinaCAS Key Laboratory of Mechanical Behavior and Design of Materials, CAS Center for Excellence in Complex System Mechanics, Department of Modern Mechanics, University of Science and Technology of China (USTC), Hefei, ChinaCAS Key Laboratory of Mechanical Behavior and Design of Materials, CAS Center for Excellence in Complex System Mechanics, Department of Modern Mechanics, University of Science and Technology of China (USTC), Hefei, ChinaA novel membrane sound absorber based on the magnetorheological membrane (MRM) is developed for active sound absorption. Due to its good flexibility and stretch-ability, the MRM consisting of carbonyl iron particles (CIPs) and polydimethylsiloxane elastomer matrix can be easily deformed. The deformation of MRM is investigated by the digital image correlation method. The off-plane displacement is positively related to both of the CIPs mass fractions and magnetic field strength. The sound absorption performance of MRM sound absorber is investigated and it is found that the thickness of the membrane, CIPs mass fractions, and air cavity length behind the membrane significantly influence the sound absorption performance. The magnetic field can adjust the sound absorption frequency without affecting the high acoustical absorption coefficients. The double-layer membrane structure has two sound absorption peaks within the testing frequency range and further improves the frequency adjustability of the sound absorber. Therefore, it is expected to be a particularly promising alternative for active sound absorption. Finally, the numerical solutions calculated by the equivalent circuit method also support the experimental results.https://www.frontiersin.org/articles/10.3389/fmats.2020.598973/fullmagnetorheological elastomermagnetostrictionmembranedeformationsound absorber |
| spellingShingle | Chuanlin Sun Xufeng Cao Xiaoling Zhou Xinglong Gong Shouhu Xuan Deformation Dependent Sound Absorption Property of a Novel Magnetorheological Membrane Sound Absorber Frontiers in Materials magnetorheological elastomer magnetostriction membrane deformation sound absorber |
| title | Deformation Dependent Sound Absorption Property of a Novel Magnetorheological Membrane Sound Absorber |
| title_full | Deformation Dependent Sound Absorption Property of a Novel Magnetorheological Membrane Sound Absorber |
| title_fullStr | Deformation Dependent Sound Absorption Property of a Novel Magnetorheological Membrane Sound Absorber |
| title_full_unstemmed | Deformation Dependent Sound Absorption Property of a Novel Magnetorheological Membrane Sound Absorber |
| title_short | Deformation Dependent Sound Absorption Property of a Novel Magnetorheological Membrane Sound Absorber |
| title_sort | deformation dependent sound absorption property of a novel magnetorheological membrane sound absorber |
| topic | magnetorheological elastomer magnetostriction membrane deformation sound absorber |
| url | https://www.frontiersin.org/articles/10.3389/fmats.2020.598973/full |
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