Eur. Phys. J. B 36, 203-207 (2003)
https://doi.org/10.1140/epjb/e2003-00336-7

Dynamic fracture model for acoustic emission

¹ Dipartimento di Fisica, Università di Roma 3, via della Vasca Navale 84, 00146 Roma, Italy
² INFM UdR Roma 1, Dipartimento di Fisica, Università “La Sapienza", P.le A. Moro 2, 00185 Roma, Italy
³ CNR Istituto di Acustica “O. M. Corbino”, via del fosso del Cavaliere 100, 00133 Roma, Italy
⁴ INFM UdR Roma 1 and SMC, Dipartimento di Fisica, Università “La Sapienza", P.le A. Moro 2, 00185 Roma, Italy

Corresponding author: ^a stefano.zapperi@romal.infn.it

Received: 22 May 2003
Revised: 19 September 2003
Published online: 8 December 2003

Abstract

We study the acoustic emission produced by micro-cracks using a two-dimensional disordered lattice model of dynamic fracture, which allows to relate the acoustic response to the internal damage of the sample. We find that the distributions of acoustic energy bursts decays as a power law in agreement with experimental observations. The scaling exponents measured in the present dynamic model can related to those obtained in the quasi-static random fuse model.