DSpace
 
  Repositório Institucional da Universidade de Aveiro > Departamento de Engenharia Mecânica > MEC - Artigos >
 Mode-I interlaminar fracture of carbon-epoxy cross-ply composites
Please use this identifier to cite or link to this item http://hdl.handle.net/10773/5318

title: Mode-I interlaminar fracture of carbon-epoxy cross-ply composites
authors: Morais, A.B. de
Moura, M.F. de
Marques, A.T.
Castro, P.T. de
keywords: Polymer-matrix composites
Fracture toughness
Delamination
Transverse cracking
Finite-element analysis
issue date: 2002
publisher: Elsevier
abstract: Mode-I double-cantilever beam (DCB) tests were performed on carbon/epoxy [0 /90]12 specimens. The starter crack was created at mid-thickness, between the 0 and 90 mid-layers. During the tests, however, the crack also propagated along the neighbouring 0/90 interface and within the 90 mid-layer. Nevertheless, the test results were apparently consistent with the assumptions of the corrected beam theory (CBT) that was used to obtain the interlaminar critical strain energy release rate, GIc. The measured values were higher than those of unidirectional [0 ]24 specimens, especially the final propagation values. A finite-element analysis confirmed the applicability of the CBT for interlaminar propagation along the two 0 /90 interfaces. The results also indicated that the intralaminar GIc is significantly smaller than the interlaminar GIc. This will prevent pure interlaminar propagation in multi-directional specimens with high interlaminar fracture toughness.
URI: http://hdl.handle.net/10773/5318
ISSN: 0266-3538
publisher version/DOI: http://dx.doi.org/10.1016/S0266-3538(01)00223-8
source: Composites Science and Technology
appears in collectionsMEC - Artigos

files in this item

file description sizeformat
Cst_cp.pdfMain article209.03 kBAdobe PDFview/open
Restrict Access. You can Request a copy!
statistics

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

 

Valid XHTML 1.0! RCAAP OpenAIRE DeGóis
ria-repositorio@ua.pt - Copyright ©   Universidade de Aveiro - RIA Statistics - Powered by MIT's DSpace software, Version 1.6.2