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Characterizing Dissipative Elastic Metamaterials Produced by Additive Manufacturing
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Membrane- and plate-type acoustic metamaterials
Tai-Yun Huang1, Chen Shen1, Yun Jing1
1Department of Mechanical and Aerospace Engineering, North Carolina State University, Raleigh, North Carolina 27695, USA.
The Journal of the Acoustical Society of America
|July 3, 2016
Summary
Acoustic metamaterials (AMMs) offer novel ways to control sound waves, enabling applications like noise reduction and cloaking. This review covers membrane- and plate-type AMMs, discussing their mechanisms, types, and future potential.
Area of Science:
- Acoustic Metamaterials
- Wave Manipulation
- Materials Science
Background:
- Acoustic metamaterials (AMMs) have seen significant research interest over the last decade.
- AMMs provide novel methods for manipulating sound waves.
- Membrane- or plate-type AMMs have enabled applications like low-frequency noise reduction, cloaking, and subwavelength imaging.
Purpose of the Study:
- To provide a comprehensive overview of recent advancements in membrane- or plate-type acoustic metamaterials.
- To examine the underlying mechanisms for tuning effective density in these AMMs.
- To discuss the opportunities, limitations, and challenges associated with membrane- or plate-type AMMs.
Main Methods:
- Review of four distinct categories of membrane- or plate-type AMMs: membranes with attached masses, plates with attached masses, membranes or plates without attached masses, and active AMMs.
- Analysis of the mechanisms responsible for effective density tuning.
- Discussion of potential applications and future research directions.
Main Results:
- Membrane- and plate-type AMMs demonstrate versatile sound wave manipulation capabilities.
- Tuning effective density is a key mechanism for controlling acoustic properties.
- Various configurations, including active systems, offer diverse functionalities.
Conclusions:
- Membrane- and plate-type AMMs represent a rapidly developing field with significant potential.
- Further research is needed to overcome limitations and address challenges for practical applications.
- These metamaterials offer promising avenues for advanced acoustic applications.
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