Paper Title:
Fracture Toughness of Whisker Reinforced Ceramics
  Abstract

By use of a probabilistic fracture model, a numerical simulation method for deformation and fracture behavior of whisker reinforced ceramics is developed first. A crack in whisker reinforced ceramics is regarded as the crack with a cohesive stress acting on the crack surface, and then the tension-softening relation is derived on the basis of a micromechanical study. After the numerical simulation method is constructed by incorporating the tension-softening relation in an FEM scheme, we simulate the load-load point displacement relationship for an edge-cracked bend specimen of a SiC whisker/alumina composite. The fracture toughness determined from the simulated maximum load is consistent with that obtained from experiment.

  Info
Periodical
Edited by
P. W. R. Beaumont and Y. Shibuya
Pages
41-46
DOI
10.4028/www.scientific.net/KEM.430.41
Citation
M. Katagiri, A. Kumaki, Y. Izumi, H. Suzuki, H. Sekine, "Fracture Toughness of Whisker Reinforced Ceramics", Key Engineering Materials, Vol. 430, pp. 41-46, 2010
Online since
March 2010
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Price
$32.00
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