Dual-gradient multilayer ultra-microperforated panel composite for ultra-broadband and quasi-perfect sound absorption

IF 3.5 2区物理与天体物理 Q2 PHYSICS, APPLIED

Applied Physics Letters Pub Date : 2025-04-02 DOI:10.1063/5.0257704

Yujie Qian, Bingxu Li, Jie Zhang

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引用次数: 0

Abstract

This study proposes and experimentally validates a multilayer composite acoustic absorber based on ultra-microperforated panels with a dual-gradient configuration, incorporating decreasing pore diameters and perforation ratios across multiple layers. The innovative design achieves ultra-broadband, wide-angle, and near-perfect sound absorption, with absorption coefficients exceeding 0.98 over a wide frequency range from 2 to 20 kHz. Comprehensive performance evaluation model based on the factor Qα is established, which accounts for both the average absorption coefficient and absorption curve smoothness and demonstrates the superiority of the dual-gradient configuration compared to single-gradient or uniform designs. Simulation and experimental results reveal that the dual-gradient distribution significantly enhances acoustic impedance matching and promotes internal resonances, facilitating efficient energy dissipation. This work represents a significant advancement in the development of thin, high-performance acoustic absorbers for applications requiring broadband and wide-angle noise control.

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来源期刊

Applied Physics Letters 物理-物理：应用

CiteScore

6.40

自引率

10.00%

发文量

1821

审稿时长

1.6 months

期刊介绍： Applied Physics Letters (APL) features concise, up-to-date reports on significant new findings in applied physics. Emphasizing rapid dissemination of key data and new physical insights, APL offers prompt publication of new experimental and theoretical papers reporting applications of physics phenomena to all branches of science, engineering, and modern technology. In addition to regular articles, the journal also publishes invited Fast Track, Perspectives, and in-depth Editorials which report on cutting-edge areas in applied physics. APL Perspectives are forward-looking invited letters which highlight recent developments or discoveries. Emphasis is placed on very recent developments, potentially disruptive technologies, open questions and possible solutions. They also include a mini-roadmap detailing where the community should direct efforts in order for the phenomena to be viable for application and the challenges associated with meeting that performance threshold. Perspectives are characterized by personal viewpoints and opinions of recognized experts in the field. Fast Track articles are invited original research articles that report results that are particularly novel and important or provide a significant advancement in an emerging field. Because of the urgency and scientific importance of the work, the peer review process is accelerated. If, during the review process, it becomes apparent that the paper does not meet the Fast Track criterion, it is returned to a normal track.