[article]
| Titre : |
Nearest neighbor probabilistic model for aluminum polycrystals |
| Type de document : |
texte imprimé |
| Auteurs : |
Mircea Grigoriu, Auteur |
| Article en page(s) : |
pp. 821-829 |
| Note générale : |
Mécanique appliquée |
| Langues : |
Anglais (eng) |
| Mots-clés : |
Monte Carlo method Lattices Probability Aluminum Measurement. |
| Résumé : |
A real-valued random field {Zi,j} with piecewise constant samples and defined on a lattice L in [openface R]2 is developed to characterize two-dimensional metallic polycrystals. The subsets defined by constant values of {Zi,j} are virtual grains and the values of {Zi,j} give Euler angles at the nodes of L. The field {Zi,j} is completely defined by its marginal distribution and conditional probabilities associated with the nearest neighbor model. The defining probabilities of {Zi,j} need to be estimated from measurements of atomic lattice orientation. Random fields {Zi,j} calibrated to the measurements of crystallographic texture in two AA7075 aluminum plates have been used to generate virtual polycrystals. Virtual and actual polycrystals are similar. |
| DEWEY : |
620.1 |
| ISSN : |
0733-9399 |
| En ligne : |
http://ascelibrary.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=JENMDT000 [...] |
in Journal of engineering mechanics > Vol. 136 N° 7 (Juillet 2010) . - pp. 821-829
[article] Nearest neighbor probabilistic model for aluminum polycrystals [texte imprimé] / Mircea Grigoriu, Auteur . - pp. 821-829. Mécanique appliquée Langues : Anglais ( eng) in Journal of engineering mechanics > Vol. 136 N° 7 (Juillet 2010) . - pp. 821-829
| Mots-clés : |
Monte Carlo method Lattices Probability Aluminum Measurement. |
| Résumé : |
A real-valued random field {Zi,j} with piecewise constant samples and defined on a lattice L in [openface R]2 is developed to characterize two-dimensional metallic polycrystals. The subsets defined by constant values of {Zi,j} are virtual grains and the values of {Zi,j} give Euler angles at the nodes of L. The field {Zi,j} is completely defined by its marginal distribution and conditional probabilities associated with the nearest neighbor model. The defining probabilities of {Zi,j} need to be estimated from measurements of atomic lattice orientation. Random fields {Zi,j} calibrated to the measurements of crystallographic texture in two AA7075 aluminum plates have been used to generate virtual polycrystals. Virtual and actual polycrystals are similar. |
| DEWEY : |
620.1 |
| ISSN : |
0733-9399 |
| En ligne : |
http://ascelibrary.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=JENMDT000 [...] |
|
Nearest neighbor probabilistic model for aluminum polycrystals in Journal of engineering mechanics, Vol. 136 N° 7 (Juillet 2010)
