Evaluation of the Fatigue Limit of Materials in Static Test Using Thermal Analysis: Effect of the Cross-Head Speed

The paper presents a study performed on steel specimens under static loading using thermal infrared techniques to determine whether thermal analysis can also provide information on the fatigue behavior. In particular, the traditional static elastic zone was investigated. The results highlight that,...

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Veröffentlicht in:Key engineering materials 2013-09, Vol.577-578, p.69-72
Hauptverfasser: Risitano, Antonino, La Rosa, G.
Format: Artikel
Sprache:eng
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Zusammenfassung:The paper presents a study performed on steel specimens under static loading using thermal infrared techniques to determine whether thermal analysis can also provide information on the fatigue behavior. In particular, the traditional static elastic zone was investigated. The results highlight that, even in the macroscopically elastic phase, a variation from the theoretical behavior is also detectable using thermographic techniques. In some previous works the authors demonstrated the possibility to estimate the fatigue limit of the material by mean of static tensile tests. In this paper, the procedure is adopted to analyze the effect of the cross-head speed on the thermoelastic limit, confirming the possibility to define the fatigue limit as the end of the totally linear thermoelastic behavior.
ISSN:1013-9826
1662-9795
1662-9795
DOI:10.4028/www.scientific.net/KEM.577-578.69