Localized Modes at Defects in Sonic Composites

Abstract

The paper discusses a sonic composite with a linear defect. Such structures allow localization of modes in the vicinity of the line defect with propagation along this line. The material in the vicinity of the line behaves like frequency-specific mirrors. The waves are trapped in a virtual set of mirrors parallel to the defect line, and the propagation bounce back and forth between these mirrors. The mirrors localize waves within a finite region of the line defect, and modes are quantized into discrete frequencies. If a mode has a frequency in the gaps, then it must exponentially decay inside the material. In a similar fashion, if the materials have point defects, the waves can be localized at the surface in which these point defects are locatedntial growth.

Authors and Affiliations

Valerica Moşneguţu, Ligia Munteanu

Keywords

Related Articles

Optimizing Distribution Problems using WinQSB Software

In the present paper we are presenting a problem of distribution using the Network Modeling Module of the WinQSB software, were we have 5 athletes which we must assign the optimal sample, function of the obtained time, s...

Special Pattern of Hydraulic Dissipation System used for Isolation of Bridges against Earthquakes

The construction sector experienced a constant evolution over time, so that today structures can be made to withstand earthquakes of considerable magnitude. This can be achieved by using various methods to counteract the...

Investigations into the Mechanical Properties and Microstructural Behavior of Foreign and Locally Fabricated Brake Disc

The present work reports investigations on mechanical and microstructural properties of foreign and locally fabricated brake disc. From safety point of view, brake disc is a crucial component of the braking system. Fore...

Effects of Pre-Treatment and Temperature on the Quality and Drying Rate of Tomatoes

The effect of pre-treatment and temperature on the quality and the drying rate of tomatos (Lycopersicon esculentus) were studied. A 3× 5 factorial experiment in a randomized complete block (RCBD) design was used. Firm an...

Calculation of Control Circuits in Time Domain using Scilab/ Xcos Environment

The paper presents the computing of control circuits in time domain, starting from the mathematical model of the control path described by differential equation’s with constant coefficients, whose solution can be obtaine...

Download PDF file
  • EP ID EP449161
  • DOI -
  • Views 87
  • Downloads 0

How To Cite

Valerica Moşneguţu, Ligia Munteanu (2015). Localized Modes at Defects in Sonic Composites. Analele Universitatii "Eftimie Murgu" Resita. Fascicula de Inginerie, 22(2), 236-244. https://europub.co.uk/articles/-A-449161