J. Phys. III France
Volume 1, Numéro 12, December 1991
Page(s) 1927 - 1951
DOI: 10.1051/jp3:1991241
J. Phys. III France 1 (1991) 1927-1951

Délaminage mode 1 et Il de composites a renfort tissu sollicites a faibles et grandes vitesses

M. L. Benzeggagh et Z. Aboura

Université de Technologie de Compiègne, Division Polymères et Composites, Centre de Recherche Royalieu, B.P. 649, 60206 Compiègne, France

(Reçu le 30 avril 1990, révisé le 29 octobre 1990, accepté le 15 janvier 1991)

The influence of the loading rate on delamination of Mode I and Mode II of two composites materials with woven glass reinforcements provided by VETROTEX company has been studied. These composites differ according to the nature of their resins, the DERAKANE 8084.05 being more soft than the DERAKANE 470.36 which is considered as rigid. The ductile nature of the resine provides an improvement in the crack initiation and propagation energies for small and high rates loading. This study has permitted the introduction of the interesting notion of the role of interfaces for the woven reinforcements. It also demonstrates the existence of a correlation between the behavior of each of these interfaces and the change of propagation and delamination energies for Mode I and II.

© Les Editions de Physique 1991