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Title: Equivalent crack based analyses of ENF and ELS tests
Author: Moura, M.F.S.F. de
Morais, A.B. de
Keywords: Composites
Mode II
End-Notched Flexure
End-Loaded Split
Equivalent crack methods
Issue Date: 2008
Publisher: Elsevier
Abstract: Equivalent crack based data reduction schemes have been recently proposed for mode II interlaminar fracture tests. These methods avoid the difficulties in monitoring crack propagation throughout the test, as the experimental compliance data is used to calculate the crack position. However, their accuracy has not been demonstrated. In this paper, application of equivalent crack approaches to End-Notched Flexure and End-Loaded Split tests was studied numerically. A cohesive zone damage model based on developed interface finite elements was used. Equivalent crack methods were found to be very accurate for both specimens, while classical beam theory based data reduction schemes underestimated fracture toughness.
Peer review: yes
DOI: 10.1016/j.engfracmech.2007.03.005
ISSN: 0013-7944
Appears in Collections:DEM - Artigos

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