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oai:recercat.cat:2445/1328542025-12-05T11:08:27Zcom_2072_1057col_2072_478780col_2072_478902col_2072_478917

urn:hdl:2445/132854 Hydraulic Fracture and Toughening of a Brittle Layer Bonded to a Hydrogel Lucantonio, Alessandro Noselli, Giovanni Trepat Guixer, Xavier DeSimone, Antonio Arroyo, Marino Polímers Fracturació hidràulica Polymers Hydraulic fracturing Brittle materials propagate opening cracks under tension. When stress increases beyond a critical magnitude, then quasistatic crack propagation becomes unstable. In the presence of several precracks, a brittle material always propagates only the weakest crack, leading to catastrophic failure. Here, we show that all these features of brittle fracture are fundamentally modified when the material susceptible to cracking is bonded to a hydrogel, a common situation in biological tissues. In the presence of the hydrogel, the brittle material can fracture in compression and can hydraulically resist cracking in tension. Furthermore, the poroelastic coupling regularizes the crack dynamics and enhances material toughness by promoting multiple cracking. 2019-05-08T11:18:24Z 2019-05-08T11:18:24Z 2015-10-28 2019-05-08T11:18:24Z info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Reproducció del document publicat a: https://doi.org/10.1103/PhysRevLett.115.188105 Physical Review Letters, 2015, vol. 115, num. 18, p. 188105 https://doi.org/10.1103/PhysRevLett.115.188105 info:eu-repo/grantAgreement/EC/FP7/616480/EU//TENSIONCONTROL info:eu-repo/grantAgreement/EC/FP7/340685/EU//MICROMOTILITY (c) American Physical Society, 2015 info:eu-repo/semantics/openAccess American Physical Society Articles publicats en revistes (Biomedicina)