Please use this identifier to cite or link to this item: http://hdl.handle.net/2067/46358
Title: Numerical behavior of models of composite materials in E'NDT at "Low" frequencies
Authors: Barbato, Lucio
Minucci, Simone 
Rubinacci, Guglielmo
Tamburrino, Antonello
Ventre, Salvatore
Journal: STUDIES IN APPLIED ELECTROMAGNETICS AND MECHANICS 
Issue Date: 2014
Abstract: 
In this paper we consider the numerical modeling of composite materials in view of Nondestructive Testing. We assume the composite material be modeled at the macroscopic scale by a possibly complex dielectric permittivity tensor. As well known, the numerical modeling is critical especially in the “low-frequency” regime where a strong ill-conditioning of the relevant stiffness matrix typically occur (the so-called low-frequency breakdown problem). Here we propose a proper splitting of the unknown that it makes possible an easy rescaling of the discrete linear system that cure/mitigate the underlying ill-conditioning.
URI: http://hdl.handle.net/2067/46358
ISSN: 1383-7281
DOI: 10.3233/978-1-61499-407-7-77
Appears in Collections:A1. Articolo in rivista

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