The study of phononic materials and structures is an emerging discipline that lies at the
crossroads of vibration and acoustics engineering and condensed matter physics. Broadly …

Wave interference modifies phonon velocities and density of states, and in doing so creates
forbidden energy bandgaps for thermal phonons. Materials that exhibit wave interference …

Phononic crystals (PnCs) are artificially made materials composed of periodically arranged
structures capable of manipulating acoustic/elastic wave propagation characteristics. In this …

In this paper we show that a 1-D phononic crystal (laminate) can exhibit metamaterial wave
phenomena which are traditionally associated with 2-and 3-D crystals. Moreover, due to the …

The propagation of elastic waves in one-dimensional (1D) phononic crystals (PCs) with
functionally graded materials (FGMs) is studied using the spectral finite elements and …

This is a comprehensive theoretical survey of acoustic wave propagation in layered
materials including elastic, viscoelastic and piezoelectric layers. The phonon modes are …

Mass reduction of automotive components enhances vehicles' performance and extends
their driving range. However, lightweight construction typically leads to noise and vibration …

In this paper, we study the defect bands of a 1D phononic crystal consisting of aluminum (Al)
and polymethyl methacrylate (PMMA) layers with a dielectric elastomer (DE) defect layer …

In the study, a retrieval approach is extended to determine the effective dynamic properties
of a finite multilayered acoustic metamaterial based on the theoretical reflection and …

Nonlinear guided waves have proven to be extremely sensitive to microscopic and
mesoscopic damage in materials in recent years. However, many factors in measurement …