Evaluation of the Crack Face Bridging Mechanism in a MgAl2O4 Spinel

The effectiveness of a grain bridging mechanism in the following wake zone of two MgAl2O4 spinel microstructures has been demonstrated through renotching experiments with double‐cantilevered‐beam (DCB) specimens. Measurements of dKR/dδa agree with previous crack growth resistance curves of similar m...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Veröffentlicht in:	Journal of the American Ceramic Society 1991-07, Vol.74 (7), p.1732-1734
Hauptverfasser:	White, Kenneth W., Kelkar, Girish P.
Format:	Artikel
Sprache:	eng
Schlagworte:	Applied sciences Building materials. Ceramics. Glasses Ceramic industries Chemical industry and chemicals crack growth resistance Exact sciences and technology fracture mechanism Miscellaneous monoliths Technical ceramics toughening
Online-Zugang:	Volltext
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	The effectiveness of a grain bridging mechanism in the following wake zone of two MgAl2O4 spinel microstructures has been demonstrated through renotching experiments with double‐cantilevered‐beam (DCB) specimens. Measurements of dKR/dδa agree with previous crack growth resistance curves of similar materials, obtained from single‐edgenotch‐beam specimens. However, even the extended test ligaments available from the present DCB specimens did not permit the full development of the following wake zone of these coarse microstructures.
ISSN:	0002-7820 1551-2916
DOI:	10.1111/j.1151-2916.1991.tb07174.x