Please use this identifier to cite or link to this item:
Title: Mode II fatigue delamination of carbon/epoxy laminates using the end-notched flexure test
Author: Sousa, José
António Bastos Pereira
Martins, André
Morais, Alfredo
Keywords: Polymer matrix composites
Mode II
Issue Date: 2015
Publisher: Elsevier
Abstract: The fatigue delamination behaviour of carbon/epoxy laminates was investigated through end-notched flexure tests carried out under displacement control. Fatigue tests were conducted at different stress ratios from pre-cracks generated in initial quasi-static tests, which provided fracture toughness values. Crack propagation rates were obtained by a new approach that employed the effective crack method and considered propagation increments of small strain-energy release rate variation. The present results were found to give a more realistic view of the fatigue delamination behaviour by taking either a recently defined strain-energy release rate range or the stress intensity factor range as the main fatigue driving parameter. The analysis took into account the typical power law fits, the influence of the stress ratio and the indication of a possible fatigue threshold. Finally, quasi-static tests conducted from the fatigue pre-crack showed significantly lower initiation critical strain-energy release rates than the ones previously measured.
Peer review: yes
DOI: 10.1016/j.compstruct.2015.08.002
ISSN: 0263-8223
Appears in Collections:TEMA - Artigos
DEM - Artigos

Files in This Item:
File Description SizeFormat 
Art_CS_ENF_fatigue.pdfmain article1.71 MBAdobe PDFrestrictedAccess

Formato BibTex MendeleyEndnote Degois 

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.