Influence of structural and geometric parameters on the sound absorption performance of carbon fiber–Onyx acoustic panels; Frontiers in Mechanical Engineering; Vol. 12
| Parent link: | Frontiers in Mechanical Engineering.— .— Lausanne: Frontiers Media S.A. Vol. 12.— 2026.— Artcile number 1896052, 20 p. |
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| Other Authors: | , , , |
| Summary: | Title screen In acoustic engineering, sound absorption is important in mitigating noise pollution in constructed environments. With the introduction of fused deposition modeling (FDM) based additive manufacturing, it is now more possible to create customizable, lightweight acoustic panels with optimized geometric configuration. This paper examines the acoustic behaviour of 3D-printed perforated polymer composites in terms of the effect of the most important geometrical and physical factors, including perforation ratio, thickness, air gap, layering, and backing conditions on the sound absorption coefficient (SAC). An impedance tube was used to conduct experimental measurements in line with ASTM E1050-19, over the frequency range of 50 Hz–5,000 Hz. The parameters investigated were: perforation ratio of 7.8% and 20.9%, sample thickness of 5–20 mm, air-gap thickness of 10–30 mm, 20 mm PET foam backing, and layered panel configurations. The findings indicated that the SAC improved with the perforation ratio and the sample with 2 mm holes (20.9% perforation ratio) had the highest SAC of 0.735 at 5,000 Hz. The increase in thickness of 10 mm–20 mm resulted in a substantial increase in low-frequency absorption resulting in a maximum SAC of 0.994 at 3,400 Hz. The addition of an air gap shifted the absorption peak to lower frequencies up to 550 Hz as a result of Helmholtz-type resonance, and a 10 mm air gap produced SACs up to 0.92 at 950 Hz. Substitution of air gaps with porous PET foam further extended the bandwidth of absorption to better SAC to 0.9 at 1,200 Hz. The layering of the material was also effective where the split samples exhibited improved absorption in low and high-frequency bands. Also, Delany-Bazley model was applied to predict SAC of solid samples, and it produced a satisfactory fit with an RMSE of 0.1078, particularly at low to mid frequencies. Such results can be used to design tunable acoustic panels that are specifically designed to control broadband noise Текстовый файл |
| Language: | English |
| Published: |
2026
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| Subjects: | |
| Online Access: | https://doi.org/10.3389/fmech.2026.1896052 |
| Format: | Electronic Book Chapter |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=688393 |
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| 200 | 1 | |a Influence of structural and geometric parameters on the sound absorption performance of carbon fiber–Onyx acoustic panels |f G. Kekan, V. Bhojwani, S. Pawar, D. Derusova | |
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| 330 | |a In acoustic engineering, sound absorption is important in mitigating noise pollution in constructed environments. With the introduction of fused deposition modeling (FDM) based additive manufacturing, it is now more possible to create customizable, lightweight acoustic panels with optimized geometric configuration. This paper examines the acoustic behaviour of 3D-printed perforated polymer composites in terms of the effect of the most important geometrical and physical factors, including perforation ratio, thickness, air gap, layering, and backing conditions on the sound absorption coefficient (SAC). An impedance tube was used to conduct experimental measurements in line with ASTM E1050-19, over the frequency range of 50 Hz–5,000 Hz. The parameters investigated were: perforation ratio of 7.8% and 20.9%, sample thickness of 5–20 mm, air-gap thickness of 10–30 mm, 20 mm PET foam backing, and layered panel configurations. The findings indicated that the SAC improved with the perforation ratio and the sample with 2 mm holes (20.9% perforation ratio) had the highest SAC of 0.735 at 5,000 Hz. The increase in thickness of 10 mm–20 mm resulted in a substantial increase in low-frequency absorption resulting in a maximum SAC of 0.994 at 3,400 Hz. The addition of an air gap shifted the absorption peak to lower frequencies up to 550 Hz as a result of Helmholtz-type resonance, and a 10 mm air gap produced SACs up to 0.92 at 950 Hz. Substitution of air gaps with porous PET foam further extended the bandwidth of absorption to better SAC to 0.9 at 1,200 Hz. The layering of the material was also effective where the split samples exhibited improved absorption in low and high-frequency bands. Also, Delany-Bazley model was applied to predict SAC of solid samples, and it produced a satisfactory fit with an RMSE of 0.1078, particularly at low to mid frequencies. Such results can be used to design tunable acoustic panels that are specifically designed to control broadband noise | ||
| 336 | |a Текстовый файл | ||
| 461 | 1 | |t Frontiers in Mechanical Engineering |c Lausanne |n Frontiers Media S.A. | |
| 463 | 1 | |t Vol. 12 |v Artcile number 1896052, 20 p. |d 2026 | |
| 610 | 1 | |a 3D printing | |
| 610 | 1 | |a carbon fiber-Onyx composite | |
| 610 | 1 | |a impedance tube | |
| 610 | 1 | |a perforated acoustic panel | |
| 610 | 1 | |a porous backing | |
| 610 | 1 | |a sound absorption coefficient | |
| 610 | 1 | |a электронный ресурс | |
| 610 | 1 | |a труды учёных ТПУ | |
| 701 | 1 | |a Ganesh |b K. |g Kekan | |
| 701 | 1 | |a Bhojwani |b V. |g Virendra | |
| 701 | 1 | |a Pawar |b S. |g Sachin | |
| 701 | 1 | |a Derusova |b D. A. |g Dariya Aleksandrovna |f 1989- |c Specialist in biotechnical systems and technologies |c Head of the Laboratory of Tomsk Polytechnic University, Doctor of Technical Sciences |9 18372 | |
| 712 | 0 | 2 | |a Национальный исследовательский Томский политехнический университет |b Инженерная школа неразрушающего контроля и безопасности |c (2017- ) |9 28322 |
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