Skip to main content

Anelastic Behavior Modeling of SiC Whisker-Reinforced Al2O3

Buy Article:

$51.00 plus tax (Refund Policy)

Abstract:

Anelastic recovery during creep deformation of a whisker-reinforced Al2O3 matrix is examined in order to study the complex interactions of the reinforcement network with the matrix. In this paper, the finite-element method is used to model the elastic and creep properties of a representative volume element during creep deformation. Two types of unit cells are investigated. The first is a three-dimensional (3D) unit cell in which randomly oriented short fibers do not contact each other. The second case examined is a 2D cell within which fibers are aligned regularly so as to percolate through the unit cell. Simulation results from the 3D model verify the necessity of a percolating network for the anelastic recovery. Results from the 2D model show that anelastic recovery is attributed more to whisker bending, rather than to contact effects between fibers of the whisker network. Finally, FEM simulations of the maximum recoverable strain and characteristic relaxation time are found to be in good agreement with an analytical model recently developed by Wilkinson and Pompe, which is based on the application of Euler's beam theory in a 2D visco-elastic unit cell.

Document Type: Research Article

DOI: http://dx.doi.org/10.1111/j.1551-2916.2009.03519.x

Affiliations: Department of Materials Science and Engineering, McMaster University, Hamilton, On., Canada L8S 4L7

Publication date: March 1, 2010

Access Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Partial Open Access Content
Partial Open access content
Subscribed Content
Subscribed content
Free Trial Content
Free trial content
Cookie Policy
X
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more