Analyse de la transformation de phase autour de la pointe de fissure d'un Alliage à Mémoire de Forme
Résumé
A new analytical prediction of the phase transformation zone around the crack tip is proposed for shape
memory alloys. The present analysis integrates the asymmetry between tension and compression in the yield surface of phase transformation around the crack tip. Shapes and sizes of the phase transformation zone are predicted for loading modes I, II and III. Furthermore, an experimental investigation for mode I loading fracture tests on edge-cracked specimens of a nickel-titanium alloy is currently performing with a particular attention devoted on displacement and temperature fields evolution around the crack tip.
Domaines
Mécanique [physics.med-ph]
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