Nanomembranes and Urban Vehicles: A Simple Way to Minimize Urban Noise
Urban noise is considered a growing problem in major cities around the world. This paper explores the development of a nanomembrane-based material for noise attenuation. The experimental results show that a combination of acoustic foam and nanomembranes can act as a Helmholtz resonator. The average...
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MDPI AG
2025-02-01
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| Online Access: | https://www.mdpi.com/2673-4605/21/1/3 |
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| author | Elvis C. Monteiro Antonio F. Avila |
| author_facet | Elvis C. Monteiro Antonio F. Avila |
| author_sort | Elvis C. Monteiro |
| collection | DOAJ |
| description | Urban noise is considered a growing problem in major cities around the world. This paper explores the development of a nanomembrane-based material for noise attenuation. The experimental results show that a combination of acoustic foam and nanomembranes can act as a Helmholtz resonator. The average sound absorption coefficient was around 90%, with peak frequencies varying from 2400 Hz to 4000 Hz. The average thickness of the nanomembranes was approximately 5.0 µm, while the acoustic foam was 13 mm thick. The mean noise reduction, around 10 dB, depends on the morphology of the nanomembranes, their thickness, and their pore size. |
| format | Article |
| id | doaj-art-e64974e6463c4d13bd9712ef5c1da610 |
| institution | Kabale University |
| issn | 2673-4605 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials Proceedings |
| spelling | doaj-art-e64974e6463c4d13bd9712ef5c1da6102025-08-20T03:43:27ZengMDPI AGMaterials Proceedings2673-46052025-02-01211310.3390/materproc2025021003Nanomembranes and Urban Vehicles: A Simple Way to Minimize Urban NoiseElvis C. Monteiro0Antonio F. Avila1Stellantis Materials Technical Expertise (MTE) Division, 3455 Contorno Avenue, Paulo Camilo, Betim 32669-900, MG, BrazilMechanical Engineering Graduate Studies Program, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, MG, BrazilUrban noise is considered a growing problem in major cities around the world. This paper explores the development of a nanomembrane-based material for noise attenuation. The experimental results show that a combination of acoustic foam and nanomembranes can act as a Helmholtz resonator. The average sound absorption coefficient was around 90%, with peak frequencies varying from 2400 Hz to 4000 Hz. The average thickness of the nanomembranes was approximately 5.0 µm, while the acoustic foam was 13 mm thick. The mean noise reduction, around 10 dB, depends on the morphology of the nanomembranes, their thickness, and their pore size.https://www.mdpi.com/2673-4605/21/1/3nanomembranesacousticsurban noise attenuation |
| spellingShingle | Elvis C. Monteiro Antonio F. Avila Nanomembranes and Urban Vehicles: A Simple Way to Minimize Urban Noise Materials Proceedings nanomembranes acoustics urban noise attenuation |
| title | Nanomembranes and Urban Vehicles: A Simple Way to Minimize Urban Noise |
| title_full | Nanomembranes and Urban Vehicles: A Simple Way to Minimize Urban Noise |
| title_fullStr | Nanomembranes and Urban Vehicles: A Simple Way to Minimize Urban Noise |
| title_full_unstemmed | Nanomembranes and Urban Vehicles: A Simple Way to Minimize Urban Noise |
| title_short | Nanomembranes and Urban Vehicles: A Simple Way to Minimize Urban Noise |
| title_sort | nanomembranes and urban vehicles a simple way to minimize urban noise |
| topic | nanomembranes acoustics urban noise attenuation |
| url | https://www.mdpi.com/2673-4605/21/1/3 |
| work_keys_str_mv | AT elviscmonteiro nanomembranesandurbanvehiclesasimplewaytominimizeurbannoise AT antoniofavila nanomembranesandurbanvehiclesasimplewaytominimizeurbannoise |