Conclusion


FSW technology brings substantial advantage to the area of joining of aluminium alloys series 2XXX and 7XXX compared to riveting technology. Design changes in the riveted construction have to be done in order to use FSW as a direct substitute of riveting technology. The changes in design have to respect different character of the joint. Fatigue tests might be required to allow certification of the construction.

Availability of data required for design of FSW technology processes in open literature is limited but provides sufficient base to estimate roughly possible benefits of the usage of the technology or eventual switch from riveting joining technology to FSW. Information about basic welding parameters is sufficient to be used as starting values for optimisation process on the real construction, materials and tools. This causes higher financial requirements for new adopters of the technology.

Production of the stringer-reinforced panel using technology of FSW provides possibility of improvement of mechanical properties of the panel, reducing weight of the plane construction, introduction of fully automated production into the manufacturing process and raising its efficiency. Further investigation is needed, however, to determine fatigue properties of FS welds in order to allow certification of the aircraft structure.



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