TY  - JOUR
IS  - 3
PB  - IOPscience
JF  - EPL (Europhysics Letters)
N2  - We study the roughness of fracture surfaces of three-dimensional samples through numerical simulations of a model for quasi-static cracks known as Born Model. We find for the roughness exponent a value ? simeq 0.5 measured for "small length scales" in microfracturing experiments. Our simulations confirm that at small length scales the fracture can be considered as quasi-static. The isotropy of the roughness exponent on the crack surface is also showed. Finally, considering the crack front, we compute the roughness exponents of longitudinal and transverse fluctuations of the crack line (?par ~ ?? ~ 0.5). They result in agreement with experimental data, and support the possible application of the model of line depinning in the case of long-range interactions.
ID  - eprints1165
EP  - 310
SN  - 0295-5075      
KW  - PACS: 05.40.-a Fluctuation phenomena
KW  -  random processes
KW  -  noise
KW  -  and Brownian motion; 62.20.M- Structural failure of materials; 81.40.Np Fatigue
KW  -  corrosion fatigue
KW  -  embrittlement
KW  -  cracking
KW  -  fracture
KW  -  and failure
VL  - 52
A1  - Parisi, Andrea
A1  - Caldarelli, Guido
A1  - Pietronero, Luciano
UR  - http://dx.doi.org/10.1209/epl/i2000-00439-9
Y1  - 2007///
SP  - 304
TI  - Roughness of fracture surfaces
AV  - none
ER  -