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35.00                     Peak force (kN)  Energy (J)                   1.8
                                (c)
                                                                                               1.6
                       30.00

                                                                                               1.4
                       25.00
                                                                                               1.2

                      Energy (J)  20.00                                                        1.0  Peak force (kN)

                                                                                               0.8
                       15.00
                                                                                               0.6
                       10.00
                                                                                               0.4

                        5.00
                                                                                               0.2

                        0.00                                                                   0.0
                                    S3 3/G2                           [G/F]3G                         G7                              F7
                                   G2/F             S6              S7              S10



                   Figure 4.15    Quasi static energy and peak force of (a) G2/B3/G2, [G/B]3G, G7 and B7,
                   (b) G2/J3/G2, [G/J]3G, G7 and J7, and (c) G2/F3/G2, [G/F]3G, G7 and  F7



                   Table 4.6      The difference (%) of the quasi-static indentation properties between

                   hybrid and natural fibre pure composites

                            Property              Hybrid             B7           J7          F7


                           Energy (J)                               73.39
                                                 G2/B3/G2                          -           -
                        Peak force (kN)                             14.90

                           Energy (J)                                            37.52
                                                 G2/J3/G2             -                        -
                        Peak force (kN)                                          52.50
                           Energy (J)                                                        33.25
                                                 G2/F3/G2             -            -
                        Peak force (kN)                                                      42.20













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