Joining and Disjoining Concepts for Adhesive Bonded Lightweight Structures
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An important part of a vehicle life cycle is the repair of damaged vehicle structures after traffic accidents. Before a professional car body repair can be carried out, however, the existing series joint must be removed in a manner that is gentle on the material.
In the course of the product life cycle of a vehicle, repairs may become necessary as a result of accidents. The damaged vehicle structures must first be removed in a way that is gentle on the material and economical. In particular, today's body concepts pose a major challenge to repair shops in the event of a vehicle being dismantled. Different steel grades - from soft deep-drawn steels to hot-formed high-strength steels - are frequently used with aluminum in multi-material structures /1/. In addition to a large number of resistance spot welding and self-pierce riveting processes, the main joining process used is adhesive bonding /2/. In any case, the aim of a repair is to restore the mechanical properties of the serial joint.