Scaling exponents for fracture surfaces in homogeneous glass and glassy ceramics

被引：108

作者：

Bonamy, D. ^{[1
]}

Ponson, L. ^{[1
]}

Prades, S. ^{[1
]}

Bouchaud, E. ^{[1
]}

Guillot, C. ^{[1
]}

机构：

[1] CEA Saclay, DRECAM SPCSI, DSM, Fracture Grp,Serv Phys & Chim Surfaces & Interfac, F-91191 Gif Sur Yvette, France

来源：

PHYSICAL REVIEW LETTERS | 2006年 / 97卷 / 13期

关键词：

D O I：

10.1103/PhysRevLett.97.135504

中图分类号：

O4 [物理学];

学科分类号：

0702 [物理学];

摘要：

We investigate the scaling properties of postmortem fracture surfaces in silica glass and glassy ceramics. In both cases, the 2D height-height correlation function is found to obey Family-Viseck scaling properties, but with two sets of critical exponents, in particular, a roughness exponent zeta similar or equal to 0.75 in homogeneous glass and zeta similar or equal to 0.4 in glassy ceramics. The ranges of length scales over which these two scalings are observed are shown to be below and above the size of the process zone, respectively. A model derived from linear elastic fracture mechanics in the quasistatic approximation succeeds to reproduce the scaling exponents observed in glassy ceramics. The critical exponents observed in homogeneous glass are conjectured to reflect the damage screening occurring for length scales below the size of the process zone.

引用

页数：4

共 39 条

[1]

Barabasi A.-L., 1995, FRACTAL CONCEPTS SUR, DOI [10.1017/CBO9780511599798, DOI 10.1017/CBO9780511599798]

[2]

Experimental analysis of fracture rugosity in granular and compact rocks [J].