4.5 Article

Realizing the perfect sound absorption and broadening effective band using porous material and micro-perforated plate

相关参考文献

注意:仅列出部分参考文献,下载原文获取全部文献信息。
Article Mechanics

Design and study of a hybrid composite structure that improves electromagnetic shielding and sound absorption simultaneously

Nansha Gao et al.

Summary: The proposed hybrid composite structure can shield electromagnetic pollution and increase sound absorption simultaneously, with an electromagnetic shielding efficiency of over 90 dB in the X band. It manipulates two different propagation modes (electromagnetic waves and sound waves) with a single structure, demonstrating the potential for creating metamaterials and reducing electromagnetic and noise pollution.

COMPOSITE STRUCTURES (2022)

Article Acoustics

Broadening perfect sound absorption by composite absorber filled with porous material at low frequency

Baozhu Cheng et al.

Summary: In this study, a composite absorber filled with porous material was proposed for enhancing low-frequency broadband sound absorption. The structure not only achieved perfect sound absorption but also showed excellent subwavelength characteristics. It is lightweight and easy to fabricate, making it promising for noise control applications.

JOURNAL OF VIBRATION AND CONTROL (2022)

Review Materials Science, Multidisciplinary

Acoustic Metamaterials for Noise Reduction: A Review

Nansha Gao et al.

Summary: Noise pollution is a significant global problem, and conventional acoustic materials are ineffective in reducing noise. However, acoustic metamaterials offer new solutions for controlling sound waves and have great potential in mitigating noise propagation. This review discusses the development, classification, physical mechanisms, applications, and future trends of acoustic metamaterials for noise reduction.

ADVANCED MATERIALS TECHNOLOGIES (2022)

Article Acoustics

Deep auto-encoder network in predictive design of Helmholtz resonator: On-demand prediction of sound absorption peak

Nansha Gao et al.

Summary: This paper establishes a large sample database using a classical Helmholtz resonator and trains the acoustic performance parameters and geometric structural parameters using the deep auto-encoder (DAE) model based on machine learning. By predicting and verifying target peak points inside and outside the database, the results show that the proposed method has high prediction accuracy for samples in the database, but slightly lower accuracy for samples out of the database. This method represents a transformation of the design paradigm for functional acoustic devices and has great significance for predictive design of more complex acoustic structures.

APPLIED ACOUSTICS (2022)

Article Materials Science, Multidisciplinary

A compact multifunctional metastructure for Low-frequency broadband sound absorption and crash energy dissipation

Zhiwen Ren et al.

Summary: In this study, a novel compact multifunctional metastructure was proposed for low-frequency broadband sound absorption and crash energy dissipation. The metastructure, consisting of cavity resonators with internally extended tubes with a hexagonal honeycomb configuration, was optimized to improve sound absorption performance. Experimental results showed that the designed metastructure achieved quasi-perfect broadband sound absorption and exhibited the same crash energy dissipation performance as an intact honeycomb structure. This study provides inspiration and methods for the compact and multifunctional design of broadband sound absorption structures.

MATERIALS & DESIGN (2022)

Article Acoustics

Optimal design of broadband quasi-perfect sound absorption of composite hybrid porous metamaterial using TLBO algorithm

Nansha Gao et al.

Summary: The study improved the average sound absorption coefficient of a composite hybrid porous metamaterial structure using an optimization algorithm, achieving a significant increase in sound absorption performance. The results demonstrated that the new porous material can effectively suppress sound wave reflection, enhance sound absorption effect, and have wide applications in related fields.

APPLIED ACOUSTICS (2021)

Article Acoustics

Design and experimental investigation of broadband quasi-perfect composite loaded sound absorber at low frequencies

BaoZhu Cheng et al.

Summary: In this study, a composite loaded sound absorber (CLSA) was designed to achieve perfect sound absorption at specific frequencies using the complex frequency plane analysis method (CFPM), and broadband quasi-perfect sound absorption was achieved by applying different numbers of porous perfect absorber units. The experimental results confirmed the effectiveness of the CLSA in achieving quasi-perfect sound absorption.

APPLIED ACOUSTICS (2021)

Article Engineering, Mechanical

Hybrid composite meta-porous structure for improving and broadening sound absorption

Nansha Gao et al.

Summary: This study proposes a composite meta-porous structure to improve the sound absorption performance of porous materials, and finds that the hybrid structure with periodic boundary exhibits high sound absorption in a certain frequency range, validated through theoretical models and finite element methods. The research also shows that different boundaries have varying effects on the sound absorption performance.

MECHANICAL SYSTEMS AND SIGNAL PROCESSING (2021)

Article Multidisciplinary Sciences

Compact broadband acoustic sink with coherently coupled weak resonances

Sibo Huang et al.

SCIENCE BULLETIN (2020)

Article Physics, Applied

Labyrinthine acoustic metastructures enabling broadband sound absorption and ventilation

Sanjay Kumar et al.

APPLIED PHYSICS LETTERS (2020)

Article Physics, Multidisciplinary

Acoustic absorbers at low frequency based on split-tube metamaterials

Peng Wu et al.

PHYSICS LETTERS A (2019)

Article Physics, Applied

Perfect acoustic absorption by subwavelength metaporous composite

Yukun Zhou et al.

APPLIED PHYSICS LETTERS (2019)

Article Physics, Applied

A thin low-frequency broadband metasurface with multi-order sound absorption

Chong Rui Liu et al.

JOURNAL OF PHYSICS D-APPLIED PHYSICS (2019)

Article Multidisciplinary Sciences

Occurrence of the potent mutagens 2-nitrobenzanthrone and 3-nitrobenzanthrone in fine airborne particles

Aldenor G. Santos et al.

SCIENTIFIC REPORTS (2019)

Article Physics, Applied

A tunable sound-absorbing metamaterial based on coiled-up space

Yang Wang et al.

JOURNAL OF APPLIED PHYSICS (2018)

Article Physics, Applied

Ultra-thin metamaterial for perfect and quasi-omnidirectional sound absorption

N. Jimenez et al.

APPLIED PHYSICS LETTERS (2016)

Article Acoustics

Use of complex frequency plane to design broadband and sub-wavelength absorbers

V. Romero-Garcia et al.

JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA (2016)

Article Chemistry, Physical

Improvement in underwater acoustic absorption performance of open-celled SiC foam

Weigang Xu et al.

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS (2015)

Article Multidisciplinary Sciences

Dark acoustic metamaterials as super absorbers for low-frequency sound

Jun Mei et al.

NATURE COMMUNICATIONS (2012)

Article Physics, Multidisciplinary

Acoustic metamaterial with negative density

Sam Hyeon Lee et al.

PHYSICS LETTERS A (2009)

Article Chemistry, Physical

Ultrasonic metamaterials with negative modulus

Nicholas Fang et al.

NATURE MATERIALS (2006)

Article Multidisciplinary Sciences

Locally resonant sonic materials

ZY Liu et al.

SCIENCE (2000)