Application of elastic metamaterials/meta-structures in civil engineering: A review

Contreras, Nicolás; Zhang, Xihong; Hao, Hong; Hernández, Francisco

doi:10.1016/j.compstruct.2023.117663

Cited by 24 publications

(1 citation statement)

References 199 publications

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“…In particular, elastic metamaterials (EMMs) are composite elastic materials with artificial microstructures made to exhibit unusual mechanical wave characteristics such as waveguiding, wave focusing and lensing, energy conversion etc. An original metamaterial classification for civil engineering applications was recently presented based on the types of waves targeted for mitigation Contreras et al [ 11 ]. On the other hand, ultrasonic waves have been widely applied for non-destructive evaluation (NDE) and structural health monitoring (SHM) of engineering structures because of their considerable sensitivity to possible faults such as cracks, pitting corrosion, voids and delaminations [ 12 , 13 ].…”

Section: Introductionmentioning

confidence: 99%

Elastic Waves Excitation and Focusing by a Piezoelectric Transducer with Intermediate Layered Elastic Metamaterials with and without Periodic Arrays of Interfacial Voids

Golub,

Fomenko,

Usov

et al. 2023

Sensors

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Optimization of the structure of piezoelectric transducers such as the proper design of matching layers can increase maximum wave energy transmission to the host structure and transducer sensitivity. A novel configuration of an ultrasonic transducer, where elastic metamaterial insertion is introduced to provide bulk wave mode conversion and to increase wave energy transfer into a substrate, is proposed. Configurations of layered elastic metamaterials with crack-like voids are examined theoretically since they can provide wide band gaps and strong wave localization and trapping. The analysis shows that the proposed metamaterial-based matching layers can sufficiently change wave energy transmission from a piezoelectric active element for various frequency ranges (relatively low frequencies as well as higher ones). The proposed configuration can also be useful for advanced sensing with higher sensitivity in certain frequency ranges or for demultiplexing different kinds of elastic waves.

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Section: Introductionmentioning

confidence: 99%

Elastic Waves Excitation and Focusing by a Piezoelectric Transducer with Intermediate Layered Elastic Metamaterials with and without Periodic Arrays of Interfacial Voids

Golub,

Fomenko,

Usov

et al. 2023

Sensors

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A Novel 3D Chiral Metamaterial with Overall Compression‐Twist Properties

Zhang,

Liu,

Lei

et al. 2024

Adv Eng Mater

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Herein, 3D chiral compression‐twist metamaterials represent a novel class of materials capable of converting compression into twist. An isotactic compression‐twist lattice cell (ICTLC), composed of two identical chiral compression‐twist units, is investigated in this paper. By compactly arranging ICTLCs, a 3D chiral metamaterial with overall compression‐twist deformation is achieved. The mechanical properties and deformation mechanisms of the 3D chiral metamaterial are analyzed. The twist angle and the equivalent stress‐strain relationship of the ICTLC are derived based on the deformation of its inclined rods under compression. An analytical solution for the twist angle of the 3D chiral metamaterial under in‐plane compression is also presented. Both experiments and numerical simulations are conducted to verify the compression‐twist performance of the proposed 3D chiral metamaterial. Additionally, the effects of the geometric parameters and the number of the ICTLC on the mechanical behavior and twist performance of the 3D chiral metamaterial are also investigated. The results indicate that, with a constant ratio of longitudinal ICTLC layers to transverse ICTLC rows (and columns), the compressive strength of the metamaterial increases while maintaining efficient compression‐twisting deformation performance as the number of ICTLCs increases. These findings provide insights for the design of metamaterials with enhanced compression‐twist coupling deformation.

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Mechanical Response of Four‐Star‐Honeycomb Hybrid Metamaterial Under In‐Plane Loading

Mwema,

Wambua,

Igwe

et al. 2024

Adv Eng Mater

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This paper focuses on designing and producing a hybrid metamaterial with a relative density of at least 0.59 using additive manufacturing. The metamaterial consists of layers of four‐star (A) and honeycomb (B)‐shaped unit cells. Three configurations (ABA, AABAA, and AABB) were 3D printed at various layer heights (0.06, 0.10, 0.15, and 0.20 mm). The quality of the printed samples depends on the layer height, with lower heights producing fewer defects and better geometric accuracy. In‐plane compression tests were conducted to evaluate the mechanical properties. The stress‐strain curves exhibited linear plateau and densification regions, varying across designs and layer heights. The AABB structure, printed at 0.1 and 0.06‐mm layer heights, showed the highest peak stress, while the ABA structure exhibited the lowest stress. The AABB structure, with a density of 742 kg/m³, demonstrated the potential for large deformation applications. Visual examination revealed distinct distortion patterns in the unit cells during loading, with the honeycomb cells in the ABA structure experiencing the most significant shape distortion. Overall, this research highlights the potential of hybrid metamaterials for lightweight and large deformation applications. The optimal design and manufacturing parameters can be tailored to achieve specific mechanical properties and performance requirements.

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Application of elastic metamaterials/meta-structures in civil engineering: A review

Cited by 24 publications

References 199 publications

Elastic Waves Excitation and Focusing by a Piezoelectric Transducer with Intermediate Layered Elastic Metamaterials with and without Periodic Arrays of Interfacial Voids

Elastic Waves Excitation and Focusing by a Piezoelectric Transducer with Intermediate Layered Elastic Metamaterials with and without Periodic Arrays of Interfacial Voids

A Novel 3D Chiral Metamaterial with Overall Compression‐Twist Properties

Mechanical Response of Four‐Star‐Honeycomb Hybrid Metamaterial Under In‐Plane Loading

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