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Modelling of Electron Beam Welding

 Researcher: Dr. Richard Turner

Collaborators: Mark Ward,  Jianglin Huang, Hector Basoalto, Jeff Brooks

Within the aerospace industry, Electron Beam Welding is a commonly used eprocess, for the joining of compressor discs together to form the compressor drum. The drum is made up of multiple compressor discs, therefore these discs all need to be joined with a sufficient intregrity such that the life of the overall component is acceptable.  Electron Beam Welding has become widely used for this application. Advantages that EB welding has over other welding methods is that the smaller heating source used can produce smaller overall distortions. However, it is these distortions that must be well understood in order to produce an optimal weld and final component.

The use of numerical models has allowed for a great deal of studies to be performed, in order to better understand the deformations occurring during the welding and the cooling of the component. The modelling performed has used the finite element method, and the weld simulation software Sysweld, to best understand welding distortions and residual stresses.

Some examples of the modelled simulations for an EB weld of a compressor drum assembly can be seen below.

An animation of the distortions induced by the EB welding process

Research papers:



Modelling of the Electron Beam Welding of a Titanium Aeroengine Compressor Disc, R. Turner, J-C. Gebelin, M. Ward, J. Huang and R.C. Reed, Precedings for the 9th International Trends in Welding Research Conference, Chicago, (2012).

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