Acoustoelastic MetaWall noise barriers for industrial application with simultaneous energy harvesting capability

Mir, Fariha; Saadatzi, Mohammadsadegh; Ahmed, Riaz; Banerjee, Sourav

doi:10.1016/j.apacoust.2018.04.029

Cited by 35 publications

(17 citation statements)

References 20 publications

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“…[ 212 ] Meanwhile, a wideband acoustic energy harvesting system comprising piezoelectric ceramics and coupled Helmholtz resonators was designed by Liu et al. [ 57 ] The locally resonant structure [ 137 ] and coiling‐up space structure [ 213 ] can also be utilized to realize acoustic energy harvesting (as shown in Figure 17c). Wang et al.…”

Section: Applications Of Acoustic Metamaterialsmentioning

confidence: 99%

“…The designed structure can be obtained via curing with the aid of a cross-linking agent, temperature, etc. For example, Li et al [136,137] filled a battery of holes with epoxy resin or rubber and successfully prepared locally resonant AMs (Figure 10f), whereas Barnhart [138] fabricated a dissipative multiresonator AM composed of a thick lead mass covered with silicone rubber and an epoxy matrix via the same approach.…”

Section: Miscellaneous Fabrication Approachesmentioning

confidence: 99%

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Acoustic Metamaterials: A Review of Theories, Structures, Fabrication Approaches, and Applications

Liao

Luan

Wang

et al. 2021

Adv Materials Technologies

111

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Acoustic metamaterials (AMs), which are materials composed of subwavelength periodic artificial structures with specific designs, have drawn significant research attention. This is because of the extraordinary abilities of AMs to manipulate acoustic waves compared with those of traditional acoustic materials. In this review, current advances in AM research are comprehensively investigated and summarized. First, major theories regarding AMs, including the acoustic wave equation, crystal lattice and energy band theory, effective medium theory, and general Snell's law, are explained in detail. Existing AM structures are then described and divided into several categories based on their structural characteristics and responses to acoustic waves. Furthermore, to bridge the gap between design and practical application, both conventional and advanced AM manufacturing methods are summarized. The applications of AMs in the fields of acoustic cloaking, acoustic lensing, acoustic absorption, noise reduction, and supernormal sound transmission are particularly delineated. Finally, contemporary challenges, trends, and strategies relevant to AMs are discussed. This review aims to provide a comprehensive collection of AM‐related knowledge, including information regarding physical theories, structures, fabrication approaches, and applications, which will help promote the further development of AMs.

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Section: Applications Of Acoustic Metamaterialsmentioning

confidence: 99%

Section: Miscellaneous Fabrication Approachesmentioning

confidence: 99%

Acoustic Metamaterials: A Review of Theories, Structures, Fabrication Approaches, and Applications

Liao

Luan

Wang

et al. 2021

Adv Materials Technologies

111

View full text Add to dashboard Cite

show abstract

“…Later, as shown in Figure 24, multiple AESC units were assembled into an acoustoelastic MetaWall for simultaneous noise blocking and energy harvesting [67]. The simulation results indicated that at 460 Hz, the harvested power was 2 mW, when PVDF material was used.…”

Section: Established Aeh Approachesmentioning

confidence: 99%

“…MetaWall structure for noise blocking and energy harvesting. Reproduced with permission from [67]; published by ELSEVIER, 2018.…”

Section: Figurementioning

confidence: 99%

Recent Developments of Acoustic Energy Harvesting: A Review

et al. 2019

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Acoustic energy is a type of environmental energy source that can be scavenged and converted into electrical energy for small-scale power applications. In general, incident sound power density is low and structural design for acoustic energy harvesting (AEH) is crucial. This review article summarizes the mechanisms of AEH, which include the Helmholtz resonator approach, the quarter-wavelength resonator approach, and the acoustic metamaterial approach. The details of recently proposed AEH devices and mechanisms are carefully reviewed and compared. Because acoustic metamaterials have the advantages of compactness, effectiveness, and flexibility, it is suggested that the emerging metamaterial-based AEH technique is highly suitable for further development. It is demonstrated that the AEH technique will become an essential part of the environmental energy-harvesting research field. As a multidisciplinary research topic, the major challenge is to integrate AEH devices into engineering structures and make composite structures smarter to achieve large-scale AEH.

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“…Some complaints regarding their installation were raised due to the size of the structures, since a barrier of variable length and height has a strong impact that limits the field of view and reduces the natural light for those affected. In addition, even for innovative solutions [14], the presence of barriers prevents the normal air flow, hindering cooling processes during summer, and at the same time alters local wind profile creating turbulence. It has been shown how fluctuations of ±2 m/s in wind speed can even reduce by 5-7 dB the IL in frequency bands above 800-1000 Hz [15], thus decreasing the effectiveness of acoustic restoration intervention.…”

Section: Introductionmentioning

confidence: 99%

Recent Developments in Sonic Crystals as Barriers for Road Traffic Noise Mitigation

2019

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Noise barriers are the most widespread solution to mitigate noise produced by the continuous growth of vehicular traffic, thus reducing the large number of people exposed to it and avoiding unpleasant effects on health. However, conventional noise barriers present the well-known issues related to the diffraction at the edges which reduces the net insertion loss, to the reflection of sound energy in the opposite direction, and to the complaints of citizens due to the reduction of field of view, natural light, and air flow. In order to avoid these shortcomings and maximize noise abatement, recent research has moved toward the development of sonic crystals as noise barriers. A previous review found in the literature was focused on the theoretical aspects of the propagation of sound through crystals. The present work on the other hand reviews the latest studies concerning the practical application of sonic crystal as noise barriers, especially for road traffic noise mitigation. The paper explores and compares the latest developments reported in the scientific literature, focused on integrating Bragg’s law properties with other mitigation effects such as hollow scatterers, wooden or recycled materials, or porous coating. These solutions could increase the insertion loss and frequency band gap, while inserting the noise mitigation action in a green and circular economy. The pros and cons of sonic crystal barriers will also be discussed, with the aim of finding the best solution that is actually viable, as well as stimulating future research on the aspects requiring improvement.

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Acoustoelastic MetaWall noise barriers for industrial application with simultaneous energy harvesting capability

Cited by 35 publications

References 20 publications

Acoustic Metamaterials: A Review of Theories, Structures, Fabrication Approaches, and Applications

Acoustic Metamaterials: A Review of Theories, Structures, Fabrication Approaches, and Applications

Recent Developments of Acoustic Energy Harvesting: A Review

Recent Developments in Sonic Crystals as Barriers for Road Traffic Noise Mitigation

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