Open AccessFatigue assessment by energy approach during tensile tests on AISI 304 steel
Author(s) -
Giacomo Risitano,
D. Corallo,
Eugenio Guglielmino,
Giacomo Risitano,
Lorenzo Scappaticci
Publication year - 2016
Publication title -
frattura ed integrità strutturale
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.368
H-Index - 19
ISSN - 1971-8993
DOI - 10.3221/igf-esis.39.20
Subject(s) - materials science , ultimate tensile strength , structural engineering , tensile testing , energy (signal processing) , composite material , forensic engineering , metallurgy , engineering , mathematics , statistics
Estimation of the fatigue limit for steel ductile materials using non-destructive methods is a topic of great interest to researchers today. In recent years, the method adopted has implemented infrared sensors to detect the surface temperature and correlate it with the fatigue limit.\udIn previous paper, a new energy approach was proposed to investigate the fatigue limit during tensile test. The numerical procedure proposed by Chrysochoos is adopted to clean infrared images and applied to analyse the surface heat sources during tensile test. AISI 304 specimens with rectangular cross-sections are tested.\udMoreover fatigue tests at increasing loads were carried out on steel by a stepwise succession, applied to the same specimen, for applying the thermographic method. The predictions of the fatigue limit, obtained by the analysis of the energy evolution during the static tests, were compared with the predictions obtained applying the thermographic method during fatigue tests.\u