Dr Marvin Kaufmann

FEICA & EURADH Adhesion Innovation Award Winner 2023

Biography

Marvin Kaufmann has just completed his Ph.D. in Production Engineering at the University of Bremen. During this time, Marvin worked at the Fraunhofer IFAM, where he developed a method for optimizing adhesive application patterns so that they flow perfectly into the desired bond geometry — thus making the best use of the material.  He is now looking for new challenges to apply his knowledge of topology optimization problems to bridge architectural and structural design. Marvin grew up in Bremen, Germany, and studied civil engineering at the University of Applied Sciences in Bremen for his bachelor's degree before moving to Hannover, Germany, for his master's degree at Leibniz University. Marvin is open-minded and has a keen interest in science, architecture, engineering and construction. In his spare time, Marvin enjoys hiking, biking, bouldering, and rock climbing.

Presentation Abstract

How Adhesives Should Flow during Joining? (video presentation)

The highly automated world of manufacturing industry offers new possibilities for the application of adhesives which are not fully utilized yet. In addition to the classical static stress and strength related topics, a more global view on adhesive bonding is needed. This includes the consideration of adhesive flow during application and joining of the substrates with all the information about initial application pattern and the resulting adhesive distribution contained after joining, and thus benefit from the modern manufacturing possibilities. To do so, research which addresses this issue is needed in the first place to elaborate innovative approaches on how to design and develop adhesive application pattern which minimize adhesive spillage and waste while achieving a bond without any air enclosures or other imperfections. This paper systematically investigates different phenomena which can occur during the joining process, such as the formation of air pockets and how they behave once formed. Furthermore, optimized application pattern and the merging behaviour of different flow fronts are considered. In total, four different adhesive application patterns were investigated experimentally and analysed using Particle Image Velocimetry. The investigations were complemented by a numerical simulation of the corresponding squeeze flow experiments — which achieved a high level of agreement. It was found that during the joining process, existing air pockets can reform due to the phenomenon of viscous fingering and subsequently cure into flat cavities, which are more critical in terms of bonding strength than spherical ones.

Presentation Time

Breakout I - Future Adhesives and Sealants

Thursday, 12 September 2024, 15:00 - 15:30

FEICA Conference