NF T54-606

Plastics based sandwich structures. Bend test.

L'essai consiste à déterminer parla mise en oeuvre de flexion 3 points et 4 points, la rigidité en flexion (D), la rigidité au cisaillement (N) et le module de Coulomb Ga de la structure sandwich essayée. De plus, aussi bien pour l'essai de flexion 3 points que pour celui de flexion 4 points la contrainte en cisaillement de l'âme 2 et la contrainte en flexion 6 peuvent être calculées. Cet essai, réalisé sur des éprouvettes de dimensions définies, constitue une méthode de caractéristation des structures sandwich à base de plastiques.

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