2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/22370A two-dimensional lattice model with bond disorder is used to investigate the fracture behaviour under stress-controlled conditions. Although the cumulative energy of precursors does not diverge at the critical point, its derivative with respect to the control parameter (reduced stress) exhibits a singular behaviour. Our results are nevertheless compatible with previous experimental findings, if one restricts the comparison to the (limited) range accessible in the experiment. A power-law avalanche distribution is also found with an exponent close to the experimental values.4 pages, 5 figures. Submitted to Europhysics LettersMaterials ScienceDisordered Systems and Neural NetworksStatistical Mechanicstext