[article]
| Titre : |
The fracture toughness of a cordierite square lattice |
| Type de document : |
texte imprimé |
| Auteurs : |
I. Quintana-Alonso, Auteur ; S.P. Mai, Auteur ; N.A. Fleck, Auteur |
| Année de publication : |
2010 |
| Article en page(s) : |
pp. 201–207 |
| Note générale : |
Métallurgie |
| Langues : |
Anglais (eng) |
| Mots-clés : |
Finite element analysis Fracture toughness Lattice materials Ceramics Toughness test |
| Résumé : |
A single-edge-notch bend test was developed for the measurement of fracture toughness of a ±45° square lattice made from an elastic-brittle solid. The finite element method was used to obtain the K-calibration for an orthotropic elastic solid, with elastic constants equal to that of the ±45° square lattice. Finite element simulations were also used to predict the fracture strength of the cracked lattice, with failure dictated by the tensile strength of the cell-wall material. The conditions for K-dominance and for failure by a net-section strength criterion of the specimen were thereby determined. A set of fracture tests on single-edge-notch bend specimens made from the ceramic cordierite validate the predictions. The measured fracture toughness of the cordierite lattices scales linearly with the stockiness of the lattice. |
| DEWEY : |
1359-6454 |
| ISSN : |
669 |
| En ligne : |
http://www.sciencedirect.com/science/article/pii/S135964540900593X |
in Acta materialia > Vol. 58 N° 1 (Janvier 2010) . - pp. 201–207
[article] The fracture toughness of a cordierite square lattice [texte imprimé] / I. Quintana-Alonso, Auteur ; S.P. Mai, Auteur ; N.A. Fleck, Auteur . - 2010 . - pp. 201–207. Métallurgie Langues : Anglais ( eng) in Acta materialia > Vol. 58 N° 1 (Janvier 2010) . - pp. 201–207
| Mots-clés : |
Finite element analysis Fracture toughness Lattice materials Ceramics Toughness test |
| Résumé : |
A single-edge-notch bend test was developed for the measurement of fracture toughness of a ±45° square lattice made from an elastic-brittle solid. The finite element method was used to obtain the K-calibration for an orthotropic elastic solid, with elastic constants equal to that of the ±45° square lattice. Finite element simulations were also used to predict the fracture strength of the cracked lattice, with failure dictated by the tensile strength of the cell-wall material. The conditions for K-dominance and for failure by a net-section strength criterion of the specimen were thereby determined. A set of fracture tests on single-edge-notch bend specimens made from the ceramic cordierite validate the predictions. The measured fracture toughness of the cordierite lattices scales linearly with the stockiness of the lattice. |
| DEWEY : |
1359-6454 |
| ISSN : |
669 |
| En ligne : |
http://www.sciencedirect.com/science/article/pii/S135964540900593X |
|
Ajouter le résultat dans votre panier Faire une suggestion Affiner la rechercheThe fracture toughness of a cordierite square lattice in Acta materialia, Vol. 58 N° 1 (Janvier 2010)
