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http://hdl.handle.net/10773/5157
Title: | Assessment of initiation criteria used in interlaminar fracture tests of composites |
Author: | Morais, A.B. de Moura, M.F.S.F. de |
Keywords: | Fracture toughness Crack initiation Finite element analysis (FEA) Non-linearity 5% Offset or maximum load |
Issue Date: | 2005 |
Publisher: | Elsevier |
Abstract: | Finite element (FE) simulations of delamination growth in mode I Double Cantilever Beam (DCB) and mode II End-Notched Flexure (ENF) specimens were conducted in order to evaluate the non-linearity (NL) and 5% offset or maximum load (5%-Max) criteria. The results showed a good performance of the 5%-Max criterion, while the NL criterion was inadequate for the ENF test. However, it was also found that large process zones in common ENF specimens may lead to significant toughness underestimations. In order to obtain accurate results it was necessary to increase the starter crack length and the support span. |
Peer review: | yes |
URI: | http://hdl.handle.net/10773/5157 |
DOI: | 10.1016/j.engfracmech.2005.05.003 |
ISSN: | 0013-7944 |
Appears in Collections: | DEM - Artigos |
Files in This Item:
File | Description | Size | Format | |
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art_efm_ini.pdf | Documento principal | 369.94 kB | Adobe PDF |
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