Zobrazeno 1 - 10
of 254
pro vyhledávání: '"Bouchaud, E."'
We measure the thickness of the heavy water layer trapped under the stress corrosion fracture surface of silica using neutron reflectivity experiments. We show that the penetration depth is 65-85 \aa ngstr\"{o}ms, suggesting the presence of a damaged
Externí odkaz:
http://arxiv.org/abs/1012.0295
The roughness of fracture surfaces has been shown to exhibit self-affne scale invariance for a wide variety of materials and loading conditions. The range of scales over which this regime extends remains a matter of debate, together with the universa
Externí odkaz:
http://arxiv.org/abs/0909.2447
Publikováno v:
J. of Phys.: Cond. Matter 15 p.S2377 (2003)
We have studied the low speed fracture regime for different glassy materials with variable but controlled length scales of heterogeneity in a carefully mastered surrounding atmosphere. By using optical and atomic force microscopy (AFM) techniques we
Externí odkaz:
http://arxiv.org/abs/cond-mat/0302607
Autor:
Celarie, F., Prades, S., Bonamy, D., Dickele, A., Ferrero, L., Bouchaud, E., Guillot, C., Marliere, C.
Publikováno v:
Appl. Surf. Sci. 212-213 p.92 (2003)
We have studied the low speed fracture regime for different glassy materials with variable but controlled length scales of heterogeneity in a carefully mastered surrounding atmosphere. By using optical and atomic force (AFM) microscopy techniques we
Externí odkaz:
http://arxiv.org/abs/cond-mat/0207583
Publikováno v:
Phys. Rev. Lett. 90 p.075504 (2003)
We report in situ Atomic Force Microscopy experiments which reveal the presence of nanoscale damage cavities ahead of a stress-corrosion crack tip in glass. Their presence might explain the departure from linear elasticity observed in the vicinity of
Externí odkaz:
http://arxiv.org/abs/cond-mat/0207449
Recently the scaling laws describing the roughness development of fracture surfaces was proposed to be related to the macroscopic elastic energy released during crack propagation [Mor00]. On this basis, an energy-based asymptotic analysis allows to e
Externí odkaz:
http://arxiv.org/abs/cond-mat/0201045
We review recent theoretical progress on the dynamics of brittle crack fronts and its relationship to the roughness of fracture surfaces. We discuss the possibility that the intermediate scale roughness of cracks, which is characterized by a roughnes
Externí odkaz:
http://arxiv.org/abs/cond-mat/0108261
The scaling laws describing the roughness development of crack surfaces are incorporated into the Griffith criterion. We show that, in the case of a Family-Vicsek scaling, the energy balance leads to a purely elastic brittle behavior. On the contrary
Externí odkaz:
http://arxiv.org/abs/cond-mat/0007100
The fatigue fracture surfaces of a metallic alloy, and the stress corrosion fracture surfaces of glass are investigated as a function of crack velocity. It is shown that in both cases, there are two fracture regimes, which have a well defined self-af
Externí odkaz:
http://arxiv.org/abs/cond-mat/9610145
The fracture surface of a Ti3Al-based alloy is studied using both an atomic force microscope and a standard scanning electron microscope. Results are shown to be quantitatively comparable. Two fracture regimes are observed. It is shown in particular
Externí odkaz:
http://arxiv.org/abs/cond-mat/9511048