PSI - Issue 17

Radomila Konečná et al. / Procedia Structural Integrity 17 (2019) 138 – 145 Author name / Structural Integrity Procedia 00 (2019) 000 – 000

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- Optical inspection of the notch roots where fatigue crack initiation occurs clearly identified different surface qualities in accordance the experimental ranking in terms of fatigue strength. The present conclusions support the recommendation by Witkin et al. (2018) that the influence of both rough surfaces on fatigue behavior and the tendency of the SLM process to build features that deviate from design intent should be considered by designers and analysts when assessing the HCF performance of parts containing stress concentrations subject to cyclic loads.

Acknowledgements

Part of the research was supported by the project Slovak VEGA grant No. 1/0463/2019. Specimen fabrication by the technological partner BEAM-IT, Fornovo Taro (Italy) is gratefully acknowledged.

References

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