Sound Absorption Of MPP With Irregular Hole Distribution
Analytical models for the sound absorption coefficient of MPP are extensively available particularly for the cases where holes are regularly distributed across the MPP structure. The behaviors of sound absorption performance have therefore been well recognized. Thus, it’s also interesting to study t...
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| Language: | en |
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IAEME Publication
2020
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| Online Access: | http://eprints.utem.edu.my/id/eprint/25005/2/IJARET_11_12_067.PDF http://eprints.utem.edu.my/id/eprint/25005/ http://www.iaeme.com/MasterAdmin/Journal_uploads/ijaret/VOLUME_11_ISSUE_12/IJARET_11_12_067.pdf |
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| author | Putra, Azma Jameel, Esraa Al-Amer Mat Dan, Reduan Mosa, Ali Ibrahim |
| author_facet | Putra, Azma Jameel, Esraa Al-Amer Mat Dan, Reduan Mosa, Ali Ibrahim |
| author_sort | Putra, Azma |
| building | UTEM Library |
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| content_provider | Universiti Teknikal Malaysia Melaka |
| content_source | UTEM Institutional Repository |
| continent | Asia |
| country | Malaysia |
| description | Analytical models for the sound absorption coefficient of MPP are extensively available particularly for the cases where holes are regularly distributed across the MPP structure. The behaviors of sound absorption performance have therefore been well recognized. Thus, it’s also interesting to study the MPP for the cases where the
distribution of holes is not spaced regularly across the MPP, which becomes the objective of this paper. Here, the FEM is employed to simulate the acoustic impedance of the panel holes. Two main cases of irregular hole distributions are observed, namely 1) where the holes are concentrated in the middle of the plate, and 2) where
the holes are distributed around the edge. For each case, this is applied for MPP with homogenous and inhomogeneous perforations. The analysis reveals that for both cases of hole distributions, the peak absorption can shift to lower frequency with the second case to have more effect than the first case. The finite element models are validated with experiment with good agreement. |
| format | Article |
| id | my.utem.eprints-25005 |
| institution | Universiti Teknikal Malaysia Melaka |
| language | en |
| publishDate | 2020 |
| publisher | IAEME Publication |
| record_format | eprints |
| spelling | my.utem.eprints-250052021-04-20T12:30:22Z http://eprints.utem.edu.my/id/eprint/25005/ Sound Absorption Of MPP With Irregular Hole Distribution Putra, Azma Jameel, Esraa Al-Amer Mat Dan, Reduan Mosa, Ali Ibrahim Analytical models for the sound absorption coefficient of MPP are extensively available particularly for the cases where holes are regularly distributed across the MPP structure. The behaviors of sound absorption performance have therefore been well recognized. Thus, it’s also interesting to study the MPP for the cases where the distribution of holes is not spaced regularly across the MPP, which becomes the objective of this paper. Here, the FEM is employed to simulate the acoustic impedance of the panel holes. Two main cases of irregular hole distributions are observed, namely 1) where the holes are concentrated in the middle of the plate, and 2) where the holes are distributed around the edge. For each case, this is applied for MPP with homogenous and inhomogeneous perforations. The analysis reveals that for both cases of hole distributions, the peak absorption can shift to lower frequency with the second case to have more effect than the first case. The finite element models are validated with experiment with good agreement. IAEME Publication 2020-12 Article PeerReviewed text en http://eprints.utem.edu.my/id/eprint/25005/2/IJARET_11_12_067.PDF Putra, Azma and Jameel, Esraa Al-Amer and Mat Dan, Reduan and Mosa, Ali Ibrahim (2020) Sound Absorption Of MPP With Irregular Hole Distribution. International Journal of Advanced Research in Engineering and Technology, 11 (12). pp. 638-648. ISSN 0976-6480 http://www.iaeme.com/MasterAdmin/Journal_uploads/ijaret/VOLUME_11_ISSUE_12/IJARET_11_12_067.pdf 10.34218/IJARET.11.12.2020.067 |
| spellingShingle | Putra, Azma Jameel, Esraa Al-Amer Mat Dan, Reduan Mosa, Ali Ibrahim Sound Absorption Of MPP With Irregular Hole Distribution |
| title | Sound Absorption Of MPP With Irregular Hole Distribution |
| title_full | Sound Absorption Of MPP With Irregular Hole Distribution |
| title_fullStr | Sound Absorption Of MPP With Irregular Hole Distribution |
| title_full_unstemmed | Sound Absorption Of MPP With Irregular Hole Distribution |
| title_short | Sound Absorption Of MPP With Irregular Hole Distribution |
| title_sort | sound absorption of mpp with irregular hole distribution |
| url | http://eprints.utem.edu.my/id/eprint/25005/2/IJARET_11_12_067.PDF http://eprints.utem.edu.my/id/eprint/25005/ http://www.iaeme.com/MasterAdmin/Journal_uploads/ijaret/VOLUME_11_ISSUE_12/IJARET_11_12_067.pdf |
| url_provider | http://eprints.utem.edu.my/ |