Search Results - "Bonamy, D."

Crackling dynamics in material failure as the signature of a self-organized dynamic phase transition by Bonamy, D, Santucci, S, Ponson, L

“…We derive here a linear elastic stochastic description for slow crack growth in heterogeneous materials. This approach succeeds in reproducing quantitatively…”
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Two-dimensional scaling properties of experimental fracture surfaces by Ponson, L, Bonamy, D, Bouchaud, E

“…The self-affine properties of postmortem fracture surfaces in silica glass and aluminum alloy were investigated through the 2D height-height correlation…”
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Failure of heterogeneous materials: A dynamic phase transition? by Bonamy, D., Bouchaud, E.

“…While there exists a unified theoretical framework–Linear Elastic Fracture Mechanics–to describe the failure of homogeneous materials, understanding and…”
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Crackling versus continuumlike dynamics in brittle failure by Barés, J, Barbier, L, Bonamy, D

“…We study how the loading rate, specimen geometry, and microstructural texture select the dynamics of a crack moving through an heterogeneous elastic material…”
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Fluctuations of global energy release and crackling in nominally brittle heterogeneous fracture by Barés, J, Hattali, M L, Dalmas, D, Bonamy, D

“…The temporal evolution of mechanical energy and spatially averaged crack speed are both monitored in slowly fracturing artificial rocks. Both signals display…”
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Crack front waves: A 3D dynamic response to a local perturbation of tensile and shear cracks by Fekak, F., Barras, F., Dubois, A., Spielmann, D., Bonamy, D., Geubelle, P.H., Molinari, J.F.

“…Crack front waves are long-lived perturbations propagating along the crack front. They are triggered by heterogeneities on the crack plane, as for instance…”
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Scaling exponents for fracture surfaces in homogeneous glass and glassy ceramics by Bonamy, D, Ponson, L, Prades, S, Bouchaud, E, Guillot, C

“…We investigate the scaling properties of postmortem fracture surfaces in silica glass and glassy ceramics. In both cases, the 2D height-height correlation…”
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Brittle-quasibrittle transition in dynamic fracture: an energetic signature by Scheibert, J, Guerra, C, Célarié, F, Dalmas, D, Bonamy, D

“…Dynamic fracture experiments were performed in polymethylmethacrylate over a wide range of velocities and reveal that the fracture energy exhibits an abrupt…”
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Role of evaporation rate on the particle organization and crack patterns obtained by drying a colloidal layer by Piroird, K., Lazarus, V., Gauthier, G., Lesaine, A., Bonamy, D., Rountree, C. L.

“…A scientific hurdle in manufacturing solid films by drying colloidal layers is preventing them from fracturing. This paper examines how the drying rate of…”
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Interaction of shear waves and propagating cracks by Bonamy, D, Ravi-Chandar, K

“…Shear waves generated from an ultrasonic transducer are used to twist dynamically growing crack fronts; the response of crack front to such external…”
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Fracture through cavitation in a metallic glass by Bouchaud, E, Boivin, D, Pouchou, J.-L, Bonamy, D, Poon, B, Ravichandran, G

“…The fracture surfaces of a Zr-based bulk metallic glass exhibit exotic multi-affine isotropic scaling properties. The study of the mismatch between the two…”
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A unified study of crack propagation in amorphous silica: Using experiments and simulations by Rountree, C.L., Prades, S., Bonamy, D., Bouchaud, E., Kalia, R., Guillot, C.

“…Atomistic aspects of dynamic fracture in amorphous silica are investigated with molecular dynamics (MD) simulations. Simulations on amorphous silica were…”
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Dynamic crack response to a localized shear pulse perturbation in brittle amorphous materials : on crack surface roughening by BONAMY, D, RAVI-CHANDAR, K

“…Linear Elastic Fracture Mechanics (LEFM) provides a coherent framework to evaluate quantitatively the energy flux released at the tip of a growing crack…”
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Relevance of visco-plastic theory in a multi-directional inhomogeneous granular flow by Cortet, P.-P, Bonamy, D, Daviaud, F, Dauchot, O, Dubrulle, B, Renouf, M

“…We confront a recent visco-plastic description of dense granular flows (Jop P. et al., Nature, 441 (2006) 727) with multi-directional inhomogeneous steady…”
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Nano-ductile crack propagation in glasses under stress corrosion: spatiotemporal evolution of damage in the vicinity of the crack tip by Prades, S., Bonamy, D., Dalmas, D., Bouchaud, E., Guillot, C.

“…Recent experiments have evidenced the existence of a ductile fracture mode at the nanometer scale in Aluminosilicate glass. The present study is designed to…”
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Anisotropic self-affine properties of experimental fracture surfaces by PONSON, L, BONAMY, D, AURADOU, H, MOUROT, G, MOREL, S, BOUCHAUD, E, GUILLOT, C, HULIN, J. P

“…The scaling properties of post-mortem fracture surfaces of brittle (silica glass), ductile (aluminum alloy) and quasi-brittle (mortar and wood) materials have…”
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Coarsening of two-dimensional Al2O3 islands on vicinal (1, -1, 0, 2) sapphire surfaces during annealing in air by NGUYEN, T. T. T, BONAMY, D, PHAM VAN, L, BARBIER, L, CRUSTY, J

“…The evolution of two-dimensional (2D) islands which result from a chemo-mechanical polishing of vicinal (1, -,0, 2) sapphire surfaces was explored by atomic…”
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Glass Breaks like Metal, but at the Nanometer Scale by Célarié, F., Prades, S., Bonamy, D., Ferrero, L., Bouchaud, E., Guillot, C., Marlière, C.

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Nanoscale damage during fracture in silica glass by BONAMY, D, PRADES, S, ROUNTREE, C. L, PONSON, L, DALMAS, D, BOUCHAUD, E, RAVI-CHANDAR, K, GUILLOT, C

“…We report here atomic force microscopy experiments designed to uncover the nature of failure mechanisms occuring within the process zone at the tip of a crack…”
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Euler-like modelling of dense granular flows: application to a rotating drum by Bonamy, D., Chavanis, P.-H., Cortet, P.-P., Daviaud, F., Dubrulle, B., Renouf, M.

“…General conservation equations are derived for 2D dense granular flows from the Euler equation within the Boussinesq approximation. In steady flows, the 2D…”
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