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3 Case Study: Fatigue Life Assessment of an Automotive Demo-Structure  379




                                     10
                                                    y = 482.991 ×  –0.492
                                  Total energy (MJ/m 3 )  1
                                                        2
                                                       R  = 0.936







                                    0.1
                                    1.E+03  1.E+04  1.E+05  1.E+06  1.E+07
                                 (a)             Life (cycle)
                                     10
                                                      y = 430.967 ×  –0.433
                                  Total energy (MJ/m 3 )  1
                                                          2
                                                         R  = 0.943







                                    0.1
                                    1.E+03  1.E+04  1.E+05  1.E+06  1.E+07
                                 (b)             Life (cycle)

                                    100            y = 802.948 ×  –0.511

                                  Total energy (MJ/m 3 )  10 1  R  = 0.899
                                                        2








                                    0.1
                                    1.E+03    1.E+04   1.E+05    1.E+06
                                 (c)             Life (cycle)
                  FIGURE 14.17
                  Energy-life curves for LSPR specimens. (a) AM30-AM60B, (b) AM60B-AZ31B, and
                  (c) AZ31B-AZ31B [10].
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