Paper number 424
|
THE EFFECT OF TRANSVERSE CRACKS ON THE CHARACTERISTICS OF A LAMINATE |
M. Boutaïb1, M. Hamdaoui1, R. Lavabre1 and E. Ramahefarison1
1Laboratoire de Génie Mécanique de Toulouse
I.N.S.A. d pt Génie Mécanique, 31077, Toulouse, France.
| Summary | This study is related to the fatigue behaviour of a continuous fibre laminated composite structure. In particular to the experimental aspect of transverse cracking. The use of X-rays allows crack visualisation and quantification. The modification of laminate characteristics (graphite/epoxy material T300/914) by fatigue is underlined and connected to matrix cracking. The phenomenon is confirmed by a continuum damage model. The effects on dynamic behaviour are analysed in order to establish the links between damage and variations in natural frequency. |
Keywords | fatigue behaviour, continuum damage, stiffness prediction, transverse cracking, dynamic properties, experimental approach. |