University of Padova, Padova, Italy
Alberto Campagnolo
Biography
Alberto Campagnolo is Associate Professor in Machine Design at the University of Padova from 2024. In 2016 he obtained the PhD title in Mechatronics and Product Innovation Engineering at the University of Padova with the dissertation: “Local approaches applied to fracture and fatigue problems” (Supervisor: Prof. Paolo Lazzarin). His research activity covers experimental tests, numerical simulations and theoretical derivations. His main research fields involve the fatigue design of welded structures by local approaches in presence of complex geometries and loading conditions and the multiaxial fatigue strength of notched components.
Conferences
Room |
Date |
Hour |
Subject |
|---|---|---|---|
| Room 9 |
19-11-2025 |
11:45 am – 12:15 pm |
37 HFMI-treated welded structures: fatigue strength assessment based on the Peak Stress Method |
Conferences Details
37 HFMI-treated welded structures: fatigue strength assessment based on the Peak Stress Method
High-frequency-mechanical-impact (HFMI) is a post-weld treatment for improving the fatigue strength of welded structures, by introducing compressive residual stresses, localized strain hardening and enlarged weld toe radii. The Peak Stress Method (PSM) has been recently extended to the fatigue strength assessment of HFMI treated steel joints, by means of a dedicated analysis procedure and new fatigue design curves, calibrated on experimental data generated from HFMI treated joints tested under uniaxial loading with nominal load ratios R = -1, 0.1 and 0.5. The results were taken from the literature and relevant to structural steels having yield stress in the range 355 ≤ σy < 750 MPa. In the present work the applicability of the PSM to analyse HFMI treated welded joints has been extended by calibrating new PSM-based fatigue design curves on experimental results taken from the literature and generated by adopting nominal load ratios in the range 0.1 < R < 0.5. Moreover, experimental data generated from joints made of structural steels having yield stress σy < 355 MPa or σy > 750 MPa have been analysed for the full range of the nominal load ratio R to calibrate proper PSM-based fatigue design curves.
