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Published April 1983 | public
Journal Article

Crack deflection processes—II. Experiment

Abstract

Two microstructural characteristics, particle morphology and size, have been examined with respect to toughening by crack deflection. Particle morphology effects were evaluated in a series of hot-pressed silicon nitrides comprised of rod-shaped grains of various aspect ratios and a bariumsilicate glass ceramic containing spherulites. Lithium-alumino-silicate glass ceramics containing Li_2Si_2O_5 lath-shaped crystals were studied for particle size effects. Independent measures of the fracture toughness and the crack deflection process were performed and results were correlated with a crack deflection model.

Additional Information

Copyright © 1983 Elsevier. (Received 31 August 1982). The research of K. T. Faber was sponsored by The Carborundum Company, Niagara Falls, NY, and of A. G. Evans by ONR (Contract N00014-81-K-0362).

Additional details

Created:
August 19, 2023
Modified:
October 17, 2023