Objective evaluation criteria of characteristics for joints in an sustainable production
| Reference number | |
| Coordinator | Swerea IVF AB - Avdelningen för processutveckling |
| Funding from Vinnova | SEK 500 000 |
| Project duration | October 2012 - September 2013 |
| Status | Completed |
| Venture | FFI - Sustainable Production |
| End-of-project report | 2012-02503sv.pdf(pdf, 754 kB) (In Swedish) |
Purpose and goal
The aim and objective of the project was to verify the hypothesis that it is possible with the CT scan technique to establish measurable objective evaluation criteria of characteristics for joining in various combinations of materials. The project has shown that it is quite possible with the CT scan to analyze, measure width, length, thickness and disorder content (usually pores) of the adhesive, in a closed joint of steel-steel, steel - aluminum, aluminum and steel - fiber composite.
Results and expected effects
The project´s hypothesis is verified by CT X-ray a number of real- combination joints in various material combinations and analyze the joints real geometry and distortion. The effect of this is that the foundation is laid for the long term to implement relevant measurements to objectively assess a joints quality and ensure the achievement of a joint that can handle the load cases designed for both the product development stage, and continuously in production.
Approach and implementation
The project group in collaboration with Volvo Cars Body Components and the Lighter network have chosen material combinations for the cases, ´coupons´, to be produced, scanned and measured. These cases have been analyzed in order to compare the important parameters for an ideal joint affecting the ability to handle the load case it is designed for. The intention has not been to establish a complete joint matrix however fundamentally examine some important material combinations and joints.