PSI - Issue 19

Yukitaka Murakami et al. / Procedia Structural Integrity 19 (2019) 113–122 Yukitaka Murakami et l./ Structural Integrity Procedia 00 (2019) 00 –000

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Fig. 11 Statistics of extremes of defects in fatigue specimens. (a) Acquisition of defects size at fracture origins, (b) Statistics of extremes obtained for an EBM material and two types of DMLS materials.

Fig. 12 Statistics of extremes of defects in actual components. (a) Schema of defect in blades, (b) Imaged data of defect size distribution.

Fig. 13 Fatigue test of notched AM specimen ( HV =384. Applied stress  a = 450MPa, N f = 9.83x10 5 cycles). Fatigue limit for un-notched specimen estimated by the  area parameter model,  w0 =477MPa. (a) Specimen geometry, (b) Crack at notch root, (c) Defect at fracture origin ( √area eq = 20  m).