Fatigue assessment of Ti-6Al-4V titanium alloy laser welded joints in absence of filler material by means of full-field techniques

Pasqualino Corigliano; Vincenzo Crupi; Eugenio Guglielmino; Carmine Maletta; Emanuele Sgambitterra; Giuseppe Barbieri; Fabrizia Caiazzo

doi:10.3221/IGF-ESIS.43.13

Fatigue assessment of Ti-6Al-4V titanium alloy laser welded joints in absence of filler material by means of full-field techniques

Authors

Pasqualino Corigliano University of Messina, Italy http://orcid.org/0000-0003-0319-048X
Vincenzo Crupi University of Messina, Italy http://orcid.org/0000-0001-7498-4733
Eugenio Guglielmino University of Messina, Italy http://orcid.org/0000-0001-7793-7406
Carmine Maletta University of Calabria, Italy http://orcid.org/0000-0002-9204-5358
Emanuele Sgambitterra University of Calabria, Italy http://orcid.org/0000-0001-5593-399X
Giuseppe Barbieri Centro Ricerche ENEA Casaccia – Rome, Italy http://orcid.org/0000-0001-5583-8634
Fabrizia Caiazzo University of Salerno, Italy

DOI:

https://doi.org/10.3221/IGF-ESIS.43.13

Keywords:

Fatigue, Welded joints, Marine structures, Digital Image Correlation, Infrared Thermography

Abstract

The aim of this research activity was to study the fatigue behavior of laser welded joints of titanium alloy, in which the welding was performed using a laser source and in the absence of filler material, by means of unconventional full field techniques: Digital Image Correlation (DIC), and Infrared Thermography (IRT). The DIC technique allowed evaluating the strain gradients around the welded zone. The IRT technique allowed analyzing the thermal evolution of the welded surface during all the fatigue tests. The fatigue limit estimated using the Thermographic Method corresponds with good approximation to the value obtained from the experimental fatigue tests. The obtained results provided useful information for the development of methods and models to predict the fatigue behavior of welded T-joints in titanium alloy.

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Published

29-12-2017

Issue

Vol. 12 No. 43 (2018): January 2018

Section

Miscellanea

License

Copyright
Authors are allowed to retain both the copyright and the publishing rights of their articles without restrictions.

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How to Cite

Fatigue assessment of Ti-6Al-4V titanium alloy laser welded joints in absence of filler material by means of full-field techniques. (2017). Frattura Ed Integrità Strutturale, 12(43), Pages 171-181. https://doi.org/10.3221/IGF-ESIS.43.13