PSI - Issue 60

A.H.V. Pavan et al. / Procedia Structural Integrity 60 (2024) 277–285 A.H.V.Pavan/ StructuralIntegrity Procedia 00 (2024) 000 – 000

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distance of ~35mm from the leading edge. The results obtained are presented in Fig. 6(c). It can be clearly understood that there are tensile residual stresses that developed with a magnitude of ~120 MPa at the interface of laser hardened and unaffected blade material were observed at distances of ~29 mm and ~ 33 mm.

Fig. 4. (a) Overview of the failed blade, (b) Typical crack observed on blade surface displayed through metallographic replication, and (c) Crack origin on the fractured surface of the blade

Fig. 5. SEM fractographs showing (a, b) crack origin, (c, d) crack propagation locations