Jm. Lopez et J. Schmittbuhl, ANOMALOUS SCALING OF FRACTURE SURFACES, Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics, 57(6), 1998, pp. 6405-6408
We argue that fracture surfaces may exhibit anomalous dynamic scaling
properties akin to what occurs in some models of kinetic roughening. W
e determine the complete scaling behavior of the local fluctuations of
a brittle fracture in a granite block from experimental data. We obta
in a global roughness exponent chi=1.2 which differs from the local on
e, chi(loc)=79. Implications on fracture physics are discussed.