Development and acoustic optimisation of sustainable fibrous materials

Titolo Rivista RIVISTA ITALIANA DI ACUSTICA
Autori/Curatori Andrea Santoni, Francesco Pompoli, Patrizio Fausti
Anno di pubblicazione 2025 Fascicolo 2025/2
Lingua Inglese Numero pagine 16 P. 21-36 Dimensione file 0 KB
DOI 10.3280/ria2-2025oa20975
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The urgent need for sustainable solutions in different industrial sectors has led to a growing interest in using natural and recycled fibrous materials for acoustic and thermal insulation. While these materials offer significant environmental benefits, their commercial production is still limited also due to a lack of standardised characterisation and design methods. This paper addresses this gap by presenting a comprehensive methodology to develop and acoustically optimise sustainable fibrous materials. The approach integrates small-scale experimental characterisation with a robust analytical framework that models a material's acoustic performance as a function of its density. The effectiveness of this method is demonstrated through case studies involving a variety of sustainable materials, including hemp, jute, posidonia, and recycled fibre mixtures. The results validate the methodology's ability to accurately predict the sound-absorbing properties of these materials, enabling the design of high-performance solutions capable of achieving acoustic ratings comparable to traditional materials. This article, invited by the RIA editorial board, is not an original study. Instead, it synthesises existing research by reanalysing and integrating the data from multiple studies using a single, unified methodology.

<p>L'impellente necessità di trovare soluzioni sostenibili in diversi settori industriali ha portato a un crescente interesse per l'utilizzo di materiali fibrosi naturali e riciclati per l'isolamento acustico e termico. Sebbene questi materiali offrano significativi vantaggi ambientali, la loro produzione commerciale è ancora limitata anche a causa della mancanza di metodi standardizzati per la loro caratterizzazione e progettazione. Questo articolo affronta tale lacuna presentando una metodologia completa per sviluppare e ottimizzare acusticamente i materiali fibrosi sostenibili. L'approccio integra la caratterizzazione sperimentale su piccola scala con un modello analitico per stimare le prestazioni acustiche di un materiale in funzione della sua densità. L'efficacia di questo metodo è dimostrata attraverso casi di studio che coinvolgono una varietà di materiali sostenibili, tra cui canapa, iuta, posidonia e miscele di fibre riciclate. I risultati validano l’affidabilità della metodologia per la stima delle prestazioni fonoassorbenti di questi materiali, consentendo la progettazione di soluzioni sostenibili in grado di raggiungere prestazioni paragonabili ai materiali tradizionali. Questo articolo, su invito del comitato editoriale RIA, non è uno studio originale. Si tratta invece di una raccolta di ricerche esistenti, i cui dati sono stati rianalizzati e integrati attraverso una metodologia unificata. &nbsp;</p>

Parole chiave:materiali fibrosi;sostenibilità;modellazione acustica;JCA;ottimizzazione

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Andrea Santoni, Francesco Pompoli, Patrizio Fausti, Development and acoustic optimisation of sustainable fibrous materials in "RIVISTA ITALIANA DI ACUSTICA" 2/2025, pp 21-36, DOI: 10.3280/ria2-2025oa20975