eprintid: 2060
rev_number: 8
eprint_status: archive
userid: 56
dir: disk0/00/00/20/60
datestamp: 2013-12-12 13:19:24
lastmod: 2014-10-09 09:20:25
status_changed: 2013-12-12 13:19:24
type: book_section
metadata_visibility: show
creators_name: Paggi, Marco
creators_name: Ferro, Giuseppe
creators_id: marco.paggi@imtlucca.it
creators_id: 
title: Fatigue of quasi-brittle materials: a unified interpretation of microstructural size, crack size and size-scale effects
ispublished: pub
subjects: TJ
divisions: CSA
full_text_status: none
keywords: Fatigue; Quasi-brittle materials; Fibre-reinforced concrete; Dimensional analysis; Incomplete selfsimilarity
note: XX Convegno Nazionale del Gruppo Italiano Frattura, Torino, Italy, 2009
-

This paper has been awarded the prize "Premio Giovani Autori IGF 2009"


abstract: In this study, a generalized Barenblatt and Botvina dimensional analysis approach to fatigue crack growth is proposed in order to highlight and explain the deviations from the classical power-law equations used to characterize the fatigue behaviour of quasi-brittle materials. According to this theoretical approach, the microstructural-size (related to the volumetric content of fibres in fibre-reinforced concrete), the crack-size, and the size-scale effects on the Paris’ law and the Wöhler equation are presented within a unified mathematical framework. Relevant experimental results taken from the literature are used to confirm the theoretical trends and to determine the values of the incomplete self-similarity exponents. All these information are expected to be useful for the design of experiments, since the role of the different dimensionless numbers governing the phenomenon of fatigue is herein elucidated.
date: 2009
date_type: published
publisher: Gruppo Italiano Frattura
pagerange: 33-43
refereed: TRUE
isbn: 978-88-95940-25-0
book_title: Atti del XX Convegno Nazionale del Gruppo Italiano Frattura
related_url_url: http://www.gruppofrattura.it/ocs/index.php/cigf/igf20/paper/view/782
related_url_type: pub
citation:   Paggi, Marco and Ferro, Giuseppe  Fatigue of quasi-brittle materials: a unified interpretation of microstructural size, crack size and size-scale effects.   In:  Atti del XX Convegno Nazionale del Gruppo Italiano Frattura.   Gruppo Italiano Frattura, pp. 33-43.  ISBN 978-88-95940-25-0      (2009)