دورية أكاديمية
Numerical modelling of the fracture behaviour of a glass matrix composite reinforced with alumina platelets
| العنوان: | Numerical modelling of the fracture behaviour of a glass matrix composite reinforced with alumina platelets |
|---|---|
| المؤلفون: | Cannillo, V.1 valeria@unimoreh.it, Pellacani, G.C.1, Leonelli, C.1, Boccaccini, A.R.2 |
| المصدر: | Composites: Part A, Applied Science & Manufacturing. Jan2003, Vol. 34 Issue 1, p43. 9p. |
| مصطلحات موضوعية: | FRACTURE mechanics, ENGINEERING tolerances |
| مستخلص: | In this work the fracture behaviour of a composite material constituted by a borosilicate glass matrix reinforced with Al2O3 platelets is studied by means of a numerical model. This material, which was experimentally investigated in a previous paper, is characterised by the presence of thermal residual stresses that arise upon cooling from the processing temperature due to the thermal expansion coefficients mismatch between the matrix and the reinforcements. A numerical model based on finite element simulations of realistic composite microstructures was adopted for the present material. The crack propagation was studied using finite elements coupled with selected failure criteria (Griffith and Weibull approaches) implemented inside the elements. Computational determination of crack propagation during failure is compared with previously obtained experimental data and microscopy images of platelet–crack interactions, showing that the model provides results in good agreement with the experimental observations. [Copyright &y& Elsevier] |
| Copyright of Composites: Part A, Applied Science & Manufacturing is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
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