eprintid: 1165
rev_number: 6
eprint_status: archive
userid: 6
dir: disk0/00/00/11/65
datestamp: 2012-02-24 10:49:38
lastmod: 2013-11-20 14:02:02
status_changed: 2012-02-24 10:49:38
type: article
metadata_visibility: show
creators_name: Parisi, Andrea
creators_name: Caldarelli, Guido
creators_name: Pietronero, Luciano
creators_id: 
creators_id: guido.caldarelli@imtlucca.it
creators_id: 
title: Roughness of fracture surfaces
ispublished: pub
subjects: QC
divisions: EIC
full_text_status: none
keywords: PACS: 05.40.-a Fluctuation phenomena, random processes, noise, and Brownian motion; 62.20.M- Structural failure of materials; 81.40.Np Fatigue, corrosion fatigue, embrittlement, cracking, fracture, and failure
abstract: 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 ζ 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 (ζpar ~ ζ⊥ ~ 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.
date: 2007
publication: EPL (Europhysics Letters)
volume: 52
number: 3
publisher: IOPscience
pagerange: 304-310
id_number: 10.1209/epl/i2000-00439-9
refereed: TRUE
issn: 0295-5075      
official_url: http://dx.doi.org/10.1209/epl/i2000-00439-9
related_url_url: http://arxiv.org/abs/cond-mat/0004374
citation:   Parisi, Andrea and Caldarelli, Guido and Pietronero, Luciano  Roughness of fracture surfaces.  EPL (Europhysics Letters), 52 (3).  pp. 304-310.  ISSN 0295-5075       (2007)