A simple method for studying K(R)-curves of crack propagation resistance in ceramic materials

The simple method presently devised for studies of the stress-intensity factor K(R) in ceramic materials does not require periodic measurements of crack-length increment in the process of subcritical propagation, and is based on the discovery of a relationship between the load increment and the nonl...

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Veröffentlicht in:	Journal of materials science letters 1992-06, Vol.11 (12), p.881
Hauptverfasser:	Barinov, S M, Shevchenko, V I A
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Sprache:	eng
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container_title	Journal of materials science letters
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creator	Barinov, S M Shevchenko, V I A
description	The simple method presently devised for studies of the stress-intensity factor K(R) in ceramic materials does not require periodic measurements of crack-length increment in the process of subcritical propagation, and is based on the discovery of a relationship between the load increment and the nonlinear deflection increment. The method's consistency is implicit in the results obtained for ZrO2 ceramics and a LaCrO3-Cr composite. The primary limitation in the application of this method lies in the assumption of a crack increment which is small relative to its initial length. (O.C.)
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title	A simple method for studying K(R)-curves of crack propagation resistance in ceramic materials
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