FALS - Hemming of Light Weight Structures

Reference number
Coordinator Swerea IVF AB - Avdelningen för processutveckling
Funding from Vinnova SEK 6 650 000
Project duration October 2014 - June 2017
Status Completed
Venture FFI - Sustainable Production
End-of-project report 2014-03929sv.pdf(pdf, 966 kB) (In Swedish)

Purpose and goal

The overall objective of the project was to create a stable, reliable and verified concept for the hemming process of lightweight structures in multi materials as well as virtual tools to predict the the sealed joint. Both the parameters of adhesive and hemming parameters have been studied and analyzed in order to also prepare for combinations of materials where cervice and galvanic separation becomes critical.

Expected results and effects

The results of the project have shown that hemming is a useful method for joining lightweight structures but at the same time demonstrated how complex the relation between the hemming, the bead geometry and the adhesive application is and to create a sealed joint. The project has developed the foundation for optimization work through a combination of physical tests that demonstrates behaviors and dependencies and a development of virtual tools that can be used to control the application of adheisve and predict what happens in products with difficult geometric conditions

Planned approach and implementation

The approach has been to study the impact of the inner structure material, viscosity and rheology of the adhesive, the addition of additives in the adhesive and alternative design solutions to create better locking and optimal hemmed joints, and to further understand the complexity of the area and create good preparation tools

External links

The project description has been provided by the project members themselves and the text has not been looked at by our editors.

Last updated 25 November 2019

Reference number 2014-03929

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