PSI - Issue 13

N.V. Boychenko / Procedia Structural Integrity 13 (2018) 908–913 Boychenko N.V. / Structural Integrity Procedia 00 (2018) 000–000

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Fig. 3. The plastic SIF distribution of along the crack front (1 - a/t=0.3, 2 - a/t=0.4, 3 - a/t =0.6 , 4 - a/t=0.8)

The effect of the loading type, crack front position and crack shape on the behavior of the plastic stress intensity factor is reduced along the crack front from the free surface towards the mid-plane. The plastic SIF has low scatter band in the crack front deepest point, as demonstrated in Fig. 4.

Fig. 4. Plastic SIF at the deepest point of a semi-elliptical crack front