Dynamic Crack Curving under Mixed-Mode Loading

A hybrid experimental-numerical investigation was undertaken to establish a crack kinking criterion and hence crack arrest at a tear strap under mixed-mode crack-tip deformation. Experimentally determined crack velocities and crack paths for 2024-T3 and 7075-T6 aluminum alloy, cruciform fracture spe...

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Veröffentlicht in:	TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series A 1994/03/25, Vol.60(571), pp.720-727
Hauptverfasser:	Simamoto, Akira, Kosai, Makoto, S., Albert Kobayashi
Format:	Artikel
Sprache:	eng ; jpn
Schlagworte:	Combined Stress Crack Curving Experimental Stress Analysis Fracture Mechanics Numerical Analysis Stress Intensity Factor
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Beschreibung
Zusammenfassung:	A hybrid experimental-numerical investigation was undertaken to establish a crack kinking criterion and hence crack arrest at a tear strap under mixed-mode crack-tip deformation. Experimentally determined crack velocities and crack paths for 2024-T3 and 7075-T6 aluminum alloy, cruciform fracture specimens, 0.81 mm thick. with a 25.4-mm-wide and 0.81-mm-thick tear strap, were input to a dynamic finite-element program to compute the necessary fracture parameters. These results were then used to verify three-parameter crack extension and curving criteria under mixed-mode loading.
ISSN:	0387-5008 1884-8338
DOI:	10.1299/kikaia.60.720