Issue 78

V. Pisarev et alii, Fracture and Structural Integrity, 78 (2026) 96-117; DOI: 10.3221/IGF-ESIS.78.06

Data collections, presented in Tab. 2 provide a possibility of constructing distributions of principal residual stress components over horizontal and vertical cross-section referred to the dimple center for different values of impact energy. To do this experimental information, obtained for two dimples in each coupon, has to be involved thus minimizing a degree of interaction between neighboring probe holes and its influence on the final result. Corresponding data are presented in Fig.7–8. On both figures zero point coincides with the dimple center.

- - 2 2 8 4 0 0 - - 2 1 0 6 0 0 -1 -8 20 0 -4 0 0

 1 , MPa

0 2 4 6 8 55 J 65 J 75 J Point x , mm

a)

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 2 , MPa

4 8 0 0

- - 2 1 0 6 0 0 -1 -8 20 0 -4 0 0

0 2 4 6 8 55 J 65 J 75 J Point x , mm

b) Figure 7: Distributions of residual stress component 1 σ (a) and 2 σ (b) along horizontal symmetry axis y = 0 constructed for different impact energy levels.

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