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. La-caractérisation-mécanique-de-l, assemblage est ensuite effectuée par des essais multiaxiaux au moyen d'un dispositif spécifiques (Arcan-Mines) qui prend en compte l'état de confinement du joint soudé Ce qui a permis de proposer un modèle de comportement élastoplastique basé sur le critère de Drucker-Prager généralisé. Des tests par émission acoustique ont permis de faire l'hypothèse de l'existence d'un maillon faible au sein du joint soudé, La rupture est alors évaluée par le modèle statistique de Weibull

. Mots-clés, Approche probabiliste, soudage laser, approche multiéchelle, essais Arcan-Mines, Modélisation numérique