PSI - Issue 39

J.A. Balbín et al. / Procedia Structural Integrity 39 (2022) 111–119 Author name / Structural Integrity Procedia 00 (2021) 000–000

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a)

b)

Fig. 3. a) Axes layout. b) Scheme of crack initiation point angle θ and crack direction angle θ 1x’ .

b)

a)

Fig. 4. Measurement of crack initiation point angles θ . a) N = 304400 cycles b) N = 415900 cycles.