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Employment of infrared thermography for the analysis of defects in welded joints for train applications

azienda Thesis in external company    


keywords EXPEIMENTAL ANALYSIS, NDT, WELDING

Reference persons FRANCESCA MARIA CURA', RAFFAELLA SESANA

Thesis type EXPERIMENTAL, MODELING AND DATA ANALYSIS

Description The welding process has a detrimental effect on joints of train aluminum components because of the formation of improper microstructures and/or of defects (e.g. cracks, incomplete penetration, and pores), both at a microscopic and macroscopic scale.
nondestructive inspections are needed to be time and cost effective, thus they should be suited for an automatic inspection.
Infrared thermography is one of the most promising thermal nondestructive technique (NDT) to detect defects in fusion joints.
This technique could be effectively used to detect defects in lasers welding joints in train components with the aim of improving quality and, hence, mechanical properties of fusion joint.

The thesis aims at defininig the detection procedure and quantify the detection resolution of the thermographic technique in assessment of defects in welded joints and the simulation of the joining process.

The thesis will be held in ALSTOM (Savigliano, Torino)

Required skills meccanica di base, principi di processo


Deadline 31/10/2021      PROPONI LA TUA CANDIDATURA




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