Issue 78

C. Popa et alii, Fracture and Structural Integrity, 78 (2026) 118-128; DOI: 10.3221/IGF-ESIS.78.07

Numerical simulations and the linear regression predictions provided for the optimal design a geometry with distance between notches of 6 mm, notch angle 60 0 and a slight difference resulted for the notch radius 1 mm from numerical simulation and 0.8 mm from machine learning approach. The experimental tests conducted on the standard specimens and one of the optimized solution highlighted that the maximum shear stress is almost similar for both geometries, but the ratio S between the maximum shear/maximum normal stress is not maximum for the standard specimen, is approximately 50% higher for the new shear specimen design.

A CKNOWLEDGEMENTS

T

his work was supported by a grant of the Ministry of Research, Innovation and Digitization, CNCS-UEFISCDI, project number PN-IV-P1-PCE-2023-1446, within PNCDI IV.

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