Ceramics Division Characterization of Fracture Origins

$characterization of fracture$

Labelled Weibull Graphs

Labelled Weibull graphs couple the strength values, fracture origin types, their locations and sizes.

The figure below is a labelled Wiebull graph for a sintered 99.9% alumina. Thirty standard B flexure bars were fractured at room temperature. All specimens were examined with an optical microscope and selected specimens with a scanning electron microscope.

Note that three ASTM standards were used:

C 1322 for fractographic analysis
C 1161 for the flexure strength measurement
C 1239 for the Weibull statistical analysis.

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Date created: 08 February 2001
Last updated: 30 June 2008

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