Issue 74

P. Zuliani et alii, Fracture and Structural Integrity, 74 (2025) 385-414; DOI: 10.3221/IGF-ESIS.74.24

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Figure 6: Experimental data digitized from Furuya et al. [15] on the S-N plot: (a) smooth specimens of 15C steel (b) Notched specimens of 30 C steel.

Figure 7: Correlation between fracture mechanism, number of cycles and frequency based on the results of Furuya et al. [15]

Khan et.al. [16] studied the effect of small-scale notches on the very high cycle fatigue of AISI 310 stainless steel. They used two types of specimens: smooth specimens and notched specimens with a small-scale circumferential notch on the surface. The notches were divided in two types: the first type has a stress concentration factor K t =4.8 and a depth of the notch d=180 μ m, while the second one has K t =3.2 and d=100 μ m.

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