Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
An ultra-thin multi-layered metamaterial for power transformer noise absorption
https://orcid.org/0000-0001-7728-9031
A compact multi-layered structure is proposed based on the coiled-up space concept for power transformer noise absorption at 100 and 200 Hz. Current methods of constructing multi-band absorbers are impractical for power transformer noise control due to the high coupling effect deteriorating their performance. To overcome this shortcoming, the proposed structure is composed of multiple connected layers creating two separate coiled ducts with adjustable dimensions to minimise the coupling effect. In the modelling stage, the geometrical features are optimised using the genetic algorithm to maximise the absorption coefficient and minimise the thickness. The proposed dual-tone absorber has a thickness of 43.5 mm which is significantly thinner than the existing conventional absorbers. The measurement results on a 3D-printed structure demonstrate the feasibility of the design.
An ultra-thin multi-layered metamaterial for power transformer noise absorption
https://orcid.org/0000-0001-7728-9031
A compact multi-layered structure is proposed based on the coiled-up space concept for power transformer noise absorption at 100 and 200 Hz. Current methods of constructing multi-band absorbers are impractical for power transformer noise control due to the high coupling effect deteriorating their performance. To overcome this shortcoming, the proposed structure is composed of multiple connected layers creating two separate coiled ducts with adjustable dimensions to minimise the coupling effect. In the modelling stage, the geometrical features are optimised using the genetic algorithm to maximise the absorption coefficient and minimise the thickness. The proposed dual-tone absorber has a thickness of 43.5 mm which is significantly thinner than the existing conventional absorbers. The measurement results on a 3D-printed structure demonstrate the feasibility of the design.
An ultra-thin multi-layered metamaterial for power transformer noise absorption
https://orcid.org/0000-0001-7728-9031
A compact multi-layered structure is proposed based on the coiled-up space concept for power transformer noise absorption at 100 and 200 Hz. Current methods of constructing multi-band absorbers are impractical for power transformer noise control due to the high coupling effect deteriorating their performance. To overcome this shortcoming, the proposed structure is composed of multiple connected layers creating two separate coiled ducts with adjustable dimensions to minimise the coupling effect. In the modelling stage, the geometrical features are optimised using the genetic algorithm to maximise the absorption coefficient and minimise the thickness. The proposed dual-tone absorber has a thickness of 43.5 mm which is significantly thinner than the existing conventional absorbers. The measurement results on a 3D-printed structure demonstrate the feasibility of the design.
An ultra-thin multi-layered metamaterial for power transformer noise absorption
Sharafkhani, Naser (Autor:in)
Building Acoustics ; 29 ; 53-62
01.03.2022
10 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Combined seismic metamaterial suitable for layered soil
| Europäisches Patentamt | 2024
Acoustic metamaterial sound absorption and insulation board suitable for low-frequency noise control
| Europäisches Patentamt | 2024
Sound absorption structure for noise reduction of transformer substation
| Europäisches Patentamt | 2023
Acoustic metamaterial sound absorption shutter structure
| Europäisches Patentamt | 2023
Active shock absorption and noise reduction system for transformer substation
| Europäisches Patentamt | 2024