ANÁLISE DA DELAMINAGEM DE MATERIAIS COMPÓSITOS COM DIFERENTES SEQUENCIAS DE EMPILHAMENTO

V. Pereira  J. Travassos  M. de Freitas      

Anales de la Mecánica de la Fractura, nº 10 . 1993 . Pág. 260 -266
Ver (.pdf): Anales10-036

Resumen: The characterization of the interlaminar fracture of laminated composite material is studied using DCB and ENF specimens, respectively for mode I and mode II. The composite material was processed from prepregs of glass fibre on high performance epoxy resin with four stacking sequences: [O]n. [(0/90)7/0ls. [(90/0)7/90]S and [(90/0)ISlT. originating interfaces on the interlaminar pre-defect respectively of 0/0, 0/0, 90!90 and 0/90. The results show a fracture energy, G1c and Üllc· higher for the two last interfaces than for the 0/0 interface. The interface 0/0, presents similar values for both stacking sequences.

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CEMUL, Instituto Superior Técnico. Av. Rovisco Pais, 1096 Lisboa Codex, Portugal
INDEP, Indústrias e Participaçoes de Defesa, S.A. Rua Fernando Palha, 1802 Lisboa Codex, Portugal
CEMUL, Instituto Superior Técnico. Av. Rovisco Pais, 1096 Lisboa Codex, Portugal