Abstract
The formation of fracture mirrors was investigated for specimens of a soda-lime-silicate glass tested in tension, four point flexure, and three point flexure. The dimensions of the mirror region are dependent on the macrostress state of the specimen at fracture. An energy balance approach, incorporating a kinetic term is applied to explain mirror formation and the macrostress state differences.
Résumé
On étudie la formation d'une configuration en miroir dans une rupture, à l'aide d'éprouvettes de verre de silicate-soude soumises à traction et à flexion sur quatre appuis et sur trois appuis. Les dimensions de la zone en miroir dépendent de l'état des macrocontraintes dans l'éprouvette au moment de la rupture.
Une approche par équilibre d'énergie, qui incorpore un terme cinéti\`que, est utilisé pour expliquer la formation en miroir et les différences dans l'état des macrocontraintes.
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Abdel-Latif, A.I.A., Bradt, R.C. & Tressler, R.E. Dynamics of fracture mirror boundary formation in glass. Int J Fract 13, 349–359 (1977). https://doi.org/10.1007/BF00040149
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DOI: https://doi.org/10.1007/BF00040149