ArticleScientific reports2023
Acoustic transmission loss in Hilbert fractal metamaterials.
Article in Scientific reports, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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Who cites it
6 citing papers in PubMed.
- A Comparative Sound Intensity Method for Measuring the Increase in Sound Insulation of Small Acoustic Metamaterial Samples.Sensors (Basel, Switzerland) · 2026Article
- A Moment-of-Inertia-Dependent Surface Homogenization Method for Porous Polymer Beams.Polymers · 2026Article
- Engineering Metamaterials for Civil Infrastructure: From Acoustic Performance to Programmable Mechanical Responses.Materials (Basel, Switzerland) · 2025Review
- Sierpiński carpet-inspired hierarchical patterning of porous materials for sound absorption.NPJ acoustics · 2025Article
- On the directionality of membrane coupled Helmholtz resonators under open air conditions.Scientific reports · 2024Article
- Multi-Order Asymmetric Acoustic Metamaterials with Broad Bandgaps at Subwavelength Scales.Materials (Basel, Switzerland) · 2023Article
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Authors and funding
4 authors.
Funding
Abstract
Acoustic metamaterials are increasingly being considered as a viable technology for sound insulation. Fractal patterns constitute a potentially groundbreaking architecture for acoustic metamaterials. We describe in this work the behaviour of the transmission loss of Hilbert fractal metamaterials used for sound control purposes. The transmission loss of 3D printed metamaterials with Hilbert fractal patterns related to configurations from the zeroth to the fourth order is investigated here using impedance tube tests and Finite Element models. We evaluate, in particular, the impact of the equivalent porosity and the relative size of the cavity of the fractal pattern versus the overall dimensions of the metamaterial unit. We also provide an analytical formulation that relates the acoustic cavity resonances in the fractal patterns and the frequencies associated with the maxima of the transmission losses, providing opportunities to tune the sound insulation properties through control of the fractal architecture.
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