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Multiscale approaches and innovative materials for better tire performance

 

A tire is a high-tech composite product used to perform the functions essential for the mobility of a vehicle: supporting the load, transmitting acceleration and braking forces to the ground, guiding the vehicle on the path. During its use, the tire is submitted to complex thermomechanical stresses, sometimes severe, repeated a very large number of times. Up to 200 different components are used in tire manufacturing : mixtures of one or more elastomers, to which fillers (carbon blacks, silica), oils and resins and a crosslinking system are added, as well as textiles or metal reinforcements. The assembly of these constituents, which are the source of many interfaces, requires different processing steps (mixing, extrusion, drawing, calendering, cooking, etc.), the control of which is essential to guarantee the product's performance.

Innovation in tire requires the  understanding of the mechanisms involved operando, taking into account all the scales, from the nanometric scale of the individual constituents, to the millimeter scale of the tire structure. At each scale, we want to characterize, evaluate and predict. From the various technological bricks that this approach makes possible, innovative proposals will emerge for new materials and new operating principles for tires capable of going beyond the performance limits.

The general objective of the chair is therefore
1. Understanding the mechanisms involved in the tires,performance of at all scales of constituent materials, from molecular to macroscopic, with the aim of improving materials and their assembly.
2. The development of tools and methodologies for characterization, analysis and modeling of behavior and the improvement of current tools and methods.
3. The proposal of innovative solutions for the tools, methods, and materials used for the tire.

The chair is intended to be a framework for promoting synergies within and between the three involved laboratories, MATEIS, LAMCOS and IMP. It promotes the pooling of scientific skills related to materials science, in order to establish relationships between (micro) structures and processes or between microstructures and properties.

                          

 

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