eprintid: 1945
rev_number: 6
eprint_status: archive
userid: 56
dir: disk0/00/00/19/45
datestamp: 2013-11-25 11:58:56
lastmod: 2014-10-09 09:20:26
status_changed: 2013-11-25 11:58:56
type: article
metadata_visibility: show
creators_name: Carpinteri, Alberto
creators_name: Paggi, Marco
creators_name: Pugno, Nicola
creators_id: 
creators_id: marco.paggi@imtlucca.it
creators_id: 
title: An analytical approach for fracture and fatigue in functionally graded materials
ispublished: pub
subjects: TJ
divisions: CSA
full_text_status: none
keywords: Functionally graded materials; Multi-layered elements; Brittle crack propagation; Fatigue crack growth
abstract: The problem of brittle crack propagation and fatigue crack growth in functionally graded materials (FGMs) is addressed. The proposed analytical approach can be used to estimate the variation of the stress-intensity factor as a function of the crack length in FGMs. Furthermore, according to the Paris’ law, the fatigue life and the crack-tip velocity of crack propagation can be predicted in the case of fatigue crack growth. A comparison with numerical results obtained according to the Finite Element method will show the effectiveness of the proposed approach. Detailed examples are provided in the case of three-point bending beam problems with either a FGM interlayer, or a FGM external coating. A comparison is presented between two types of grading in the elastic modulus: a continuous linear variation in the FGM layer and a discrete approximation with a multi-layered beam and a constant Young’s modulus in each layer.
date: 2006
date_type: published
publication: International Journal of Fracture
volume: 141
number: 3-4
publisher: Springer-Verlag
pagerange: 535-547
id_number: 10.1007/s10704-006-9012-y
refereed: TRUE
issn: 1573-2673
official_url: http://dx.doi.org/10.1007/s10704-006-9012-y
citation:   Carpinteri, Alberto and Paggi, Marco and Pugno, Nicola  An analytical approach for fracture and fatigue in functionally graded materials.  International Journal of Fracture, 141 (3-4).  pp. 535-547.  ISSN 1573-2673      (2006)