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Lookup NU author(s): Dr Xinwei LiORCiD
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© 2023 The Authors. Advanced Science published by Wiley-VCH GmbH. The reduction of noises, achieved through absorption, is of paramount importance to the well-being of both humans and machines. Lattice structures, defined as architectured porous solids arranged in repeating patterns, are emerging as advanced sound-absorbing materials. Their immense design freedom allows for customizable pore morphology and interconnectivity, enabling the design of specific absorption properties. Thus far, the sound absorption performance of various types of lattice structures are studied and they demonstrated favorable properties compared to conventional materials. Herein, this review gives a thorough overview on the current research status, and characterizations for lattice structures in terms of acoustics is proposed. Till date, there are four main sound absorption mechanisms associated with lattice structures. Despite their complexity, lattice structures can be accurately modelled using acoustical impedance models that focus on critical acoustical geometries. Four defining features: morphology, relative density, cell size, and number of cells, have significant influences on the acoustical geometries and hence sound wave dissipation within the lattice. Drawing upon their structural-property relationships, a classification of lattice structures into three distinct types in terms of acoustics is proposed. It is proposed that future attentions can be placed on new design concepts, advanced materials selections, and multifunctionalities.
Author(s): Li X, Chua JW, Yu X, Li Z, Zhao M, Wang Z, Zhai W
Publication type: Review
Publication status: Published
Journal: Advanced Science
Year: 2024
Volume: 11
Issue: 4
Print publication date: 26/01/2024
Online publication date: 23/11/2023
Acceptance date: 02/04/2018
ISSN (electronic): 2198-3844
Publisher: John Wiley and Sons Inc
URL: https://doi.org/10.1002/advs.202305232
DOI: 10.1002/advs.202305232
