Global Advanced Research Journal of Physical and Applied Sciences (GARJPAS)

August 2014 Vol. 3(3), pp. 051-065

Copyright © 2014 Global Advanced Research Journals

 

Full Length Research Paper

Fatigue life of fully Penetrated Hybrid Laser Fillet Welds 

Prince Ovie Ohimo

School of Applied Science, Welding Engineering, Cranfield University

Corresponding Author Email: ovieohimo@yahoo.com

Accepted 26 August, 2014

Abstract

Conventional MIG welding is a relatively slow and high heat input welding process. This high heat input, leads to residual stress and distortion. This distortion has a negative effect on the fillet welds.  In order to avoid the problem of distortion, laser hybrid welding was used because it is a low heat input process and faster in terms of productivity compared with conventional MIG process.  It also has a good joint bridging ability. In laser hybrid welding, the deep penetration characteristic enables it to achieve full penetration, when welding from one side of a fillet weld. This research investigates the effects of the welding parameters on the fatigue life of fully penetrated laser hybrid fillet welds. Also, in this work we are comparing the mechanical properties of hybrid laser welds and conventional MIG welds.

Keywords: Hybrid, Laser, Welding, MIG

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