Issue 73

V. Pisarev et alii, Fracture and Structural Integrity, 73 (2025) 108-130; DOI: 10.3221/IGF-ESIS.73.08

Mutual location of contact dimple borders and probe hole contours is shown in Fig. 2, 3 and 4. Fig. 2b depicts local coordinate system used ( y –axis coincides with the vertical symmetry axis of each individual probe hole). Through holes, essential for residual stress deriving, are of 2.0 mm diameter. Hole number increase corresponds to the drilling order. The impact of 20 mm hemispherical tip (CP_D-20 coupon) leads to revealing the image of the dimple contour due to visible surface layers damages as it is shown in Fig. 3a.

(a) Real image (b) Scheme Figure 2: Mutual location of contact dimple border and probe hole edges in CP_S coupon.

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