4.7 Article

Tunable underwater low-frequency sound absorption via locally resonant piezoelectric metamaterials

Related references

Note: Only part of the references are listed.
Article Acoustics

Causally-guided acoustic optimization of single-layer rigidly-backed micro-perforated partitions: Theory

Teresa Bravo et al.

Summary: This theoretical study applies the findings from electromagnetic research on radar slab absorbers to enhance the broadband dissipation of micro-perforated absorbers in the field of acoustics. A causal-based optimization criterion is proposed to find optimal absorbers that achieve maximum wideband performance and perfect absorption at their Helmholtz resonance frequency. The criterion maximizes the sensitivity of the total reflected intensity with respect to the absorber's constitutive parameters and can be easily implemented using numerical methods. It is shown to be a suitable alternative for single-layer absorber broadband optimization.

JOURNAL OF SOUND AND VIBRATION (2022)

Article Engineering, Mechanical

Ultra-thin and broadband low-frequency underwater acoustic meta-absorber

Yanni Zhang et al.

Summary: An ultra-thin meta-absorber design is proposed to achieve broadband low-frequency underwater sound absorption by inserting circular-elastic-plate scatterers (CPSs) into an elastomer matrix. The design enables high and quasi-perfect sound absorption at multiple frequencies and a broad low-frequency range. Experimentally confirmed, this research offers a novel and effective solution for broadband low-frequency underwater sound absorption.

INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES (2021)

Article Acoustics

Broadening low-frequency bandgaps in locally resonant piezoelectric metamaterials by negative capacitance

Kaijun Yi et al.

Summary: By combining negative capacitance and inductance, this paper enlarges the low-frequency bandgap width in locally resonant piezoelectric metamaterials. The analytical investigation of the tuning properties of the LR bandgap by NC shows that modifying NC value significantly increases the LR bandgap size. This theoretical guideline provides insights for designing piezoelectric metamaterials with bandgap effects for practical applications such as low-frequency vibration and noise reduction.

JOURNAL OF SOUND AND VIBRATION (2021)

Article Multidisciplinary Sciences

Conceptual-based design of an ultrabroadband microwave metamaterial absorber

Sichao Qu et al.

Summary: By introducing metallic ring structural dipole resonances in the micro-wave regime, a metamaterial absorber with hierarchical structures has been designed and realized to achieve high absorption rates and efficiency. The absorber shows improved performance in terms of absorption, bandwidth, and thickness.

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA (2021)

Article Acoustics

Acoustic performance of periodic steel cylinders embedded in a viscoelastic medium

Gyani Shankar Sharma et al.

JOURNAL OF SOUND AND VIBRATION (2019)

Article Materials Science, Multidisciplinary

Underwater sound absorption performance of acoustic metamaterials with multilayered locally resonant scatterers

Kangkang Shi et al.

RESULTS IN PHYSICS (2019)

Article Chemistry, Multidisciplinary

Optimal sound-absorbing structures

Min Yang et al.

MATERIALS HORIZONS (2017)

Article Acoustics

Effects of the Wave Front on the Acoustic Reflection coefficient

R. Dragonetti et al.

ACTA ACUSTICA UNITED WITH ACUSTICA (2016)

Article Physics, Applied

Experimental study of an adaptive elastic metamaterial controlled by electric circuits

R. Zhu et al.

APPLIED PHYSICS LETTERS (2016)

Article Instruments & Instrumentation

An adaptive metamaterial beam with hybrid shunting circuits for extremely broadband control of flexural waves

Y. Y. Chen et al.

SMART MATERIALS AND STRUCTURES (2016)

Article Instruments & Instrumentation

Flexural waves focusing through shunted piezoelectric patches

K. Yi et al.

SMART MATERIALS AND STRUCTURES (2016)

Article Acoustics

Band Gap Control in an Active Elastic Metamaterial With Negative Capacitance Piezoelectric Shunting

Y. Y. Chen et al.

JOURNAL OF VIBRATION AND ACOUSTICS-TRANSACTIONS OF THE ASME (2014)

Article Acoustics

Effects of locally resonant modes on underwater sound absorption in viscoelastic materials

Jihong Wen et al.

JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA (2011)

Article Physics, Multidisciplinary

Design of tunable acoustic metamaterials through periodic arrays of resonant shunted piezos

L. Airoldi et al.

NEW JOURNAL OF PHYSICS (2011)

Article Acoustics

An electromechanical low frequency panel sound absorber

Daoqing Chang et al.

JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA (2010)

Article Acoustics

Sound absorption by viscoelastic coatings with periodically distributed cavities

SM Ivansson

JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA (2006)

Article Physics, Multidisciplinary

Effective mass density of fluid-solid composites

J Mei et al.

PHYSICAL REVIEW LETTERS (2006)

Article Instruments & Instrumentation

Attenuation and localization of wave propagation in rods with periodic shunted piezoelectric patches

O Thorp et al.

SMART MATERIALS AND STRUCTURES (2001)

Article Instruments & Instrumentation

Passive underwater acoustic damping using shunted piezoelectric coatings

JM Zhang et al.

SMART MATERIALS AND STRUCTURES (2001)

Article Engineering, Electrical & Electronic

Ultimate thickness to bandwidth ratio of radar absorbers

KN Rozanov

IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION (2000)

Article Physics, Applied

Electrically controlled elasticity utilizing piezoelectric coupling

M Date et al.

JOURNAL OF APPLIED PHYSICS (2000)