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The dynamic modulus of elasticity assesses how a concrete structure deforms under impact or dynamic loads. It is typically higher than the static modulus of elasticity, measured under slow, steady loading conditions.
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A household microwave and lasers are examples of standing electromagnetic waves in a cavity. When two conducting metal plates are placed parallel at the nodal planes, it creates a cavity where standing waves are formed. The cavity between the two planes is analogous to a stretched string held at the points x = 0 and x = L. Here, the distance 'L' between the two planes must be an integer multiple of half of the wavelength. The wavelengths that satisfy this condition are given by:
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Characterizing Dissipative Elastic Metamaterials Produced by Additive Manufacturing
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Current developments in elastic and acoustic metamaterials science.

Giuseppe Failla1, Alessandro Marzani2, Antonio Palermo2

  • 1Department of Civil, Energy, Environmental and Materials Engineering (DICEAM), University of Reggio Calabria, Via Zehender, Reggio Calabria 89124, Italy.

Philosophical Transactions. Series A, Mathematical, Physical, and Engineering Sciences
|August 12, 2024
PubMed
Summary
This summary is machine-generated.

Metamaterials are engineered materials with unique properties. This research explores cutting-edge theoretical, computational, and experimental studies on elastic and acoustic metamaterials, highlighting recent achievements and future challenges.

Keywords:
acousticscomputational modellingdesignelastodynamicsmetamaterialwave control

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Area of Science:

  • Physics
  • Materials Science
  • Engineering

Background:

  • Metamaterials represent a novel scientific frontier with engineered properties beyond natural materials.
  • Their unique characteristics stem from carefully designed architectures at various scales.
  • Applications in mechanical and acoustic fields are rapidly expanding.

Purpose of the Study:

  • To compile current theoretical, computational, and experimental research on elastic and acoustic metamaterials.
  • To provide a comprehensive overview of recent advancements.
  • To identify future research challenges in the field.

Main Methods:

  • Theoretical studies
  • Computational modeling
  • Experimental investigations

Main Results:

  • Demonstration of exotic properties in engineered materials.
  • Tailored architectures enabling novel mechanical and acoustic functionalities.
  • Significant progress in understanding and applying metamaterials.

Conclusions:

  • Elastic and acoustic metamaterials offer vast potential for innovation.
  • Continued interdisciplinary research is crucial for future breakthroughs.
  • This theme issue captures the dynamic state of metamaterial science.