INVESTIGADORES
IRURZUN isabel Maria
artículos
Título:
Fractal analysis on electrical treeing in a cross-linked synthetic resin.
Autor/es:
I. M. IRURZUN; E. E. MOLA; J. L. VICENTE; M. C. CORDERO
Revista:
PHYSICAL REVIEW E - STATISTICAL PHYSICS, PLASMAS, FLUIDS AND RELATED INTERDISCIPLINARY TOPICS
Editorial:
American Physical Society
Referencias:
Año: 2001 vol. 63 p. 161101 - 161106
ISSN:
1063-651X
Resumen:
A statistical picture of dielectric breakdown in cross-linked polyester resins for a two-dimensional geometry is presented and discussed in this paper. A connection is established between the dielectric breakdown model (DBM) and the physical properties of the resin. Distribution propagation times of simulated trees obey a Weibull statistics, as was experimentally found. This adjustment is achieved by a redefinition of the unit of time, which is different from the one employed up to date. The experimental dependence of characteristic propagation times on the fractal dimension D can be reproduced in the range 1.2<D<1.5. A relationship is established between the glass transition temperature Tg and the DBM parameter h , which is in agreement with thermodynamical considerations. It is suggested that fractal characteristics of electrical trees should be related to a basic material property, such as the cross-linking density, which implies a notion of universality that deserves to be explored.