Page 208 - Plastics Engineering
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Mechanical Behaviour of Composites                              191

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            0
              0     10    20     30     40    50     60    70     80    90
                                         ~ngle (e)

           Fig. 3.11  Variation of properties in unidirectional compite as a function of fibre angle

         the strains in the global X - Y directions vary with 8 when a stress o is applied
         as shown in Fig. 3.12.

              E1 = 8oooO MNIm',   E2 = 4000 MNlm2, G12 = 1500 MNIm'
                                      ~12 0.43
                                         =


                                                        Global
                                                     yl axis

                                                              X














                     Fig. 3.12  Unidirectional Kevladepoxy composite (single ply)
   203   204   205   206   207   208   209   210   211   212   213