Phys. Rev. Lett. 89, 185503 (2002) [4 pages]Acoustic Emission from Paper FractureReceived 3 May 2002; published 11 October 2002 We report tensile failure experiments on paper sheets. The acoustic emission energy and the waiting times between acoustic events follow power-law distributions. This remains true while the strain rate is varied by more than 2 orders of magnitude. The energy statistics has the exponent β∼1.25±0.10 and the waiting times the exponent τ∼1.0±0.1, in particular, for the energy roughly independent of the strain rate. These results do not compare well with fracture models, for (brittle) disordered media, which as such exhibit criticality. One reason may be residual stresses, neglected in most theories. © 2002 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.89.185503
DOI:
10.1103/PhysRevLett.89.185503
PACS:
62.20.Mk, 05.40.–a, 62.20.Fe, 81.40.Np
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