PSI - Issue 2_B

Eduardo F. Campello et al. / Procedia Structural Integrity 2 (2016) 2929–2935 Author name / Structural Integrity Procedia 00 (2016) 000–000

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Fig. 3. Variation of log � � with log (2N), for the unnotched composite.

Fig. 4. Variation of log � � with log (2N), for the notched composite.

3.1. Modeling of the S-N curve

The straight line representative of the experimental data (Figure 3) can be modeled by an expression presented by Dowling (1993) (2) � � = � � � �1 � � � � � � �2�� �