Optimization of Micro-Forming of Copper Alloys by Stéphanie Thuillet at IRDL

Stéphanie Thuillet, a researcher at the National Polytechnic Institute of Brittany, has developed behavior models for the micro-forming of ultra-thin sheets of copper alloys, addressing the challenges related to the variability of mechanical properties at the microscopic scale. This advancement, validated in 2023, meets the growing demand from high-precision industries in Benin and beyond.

Stéphanie Thuillet's thesis is set in a context where the miniaturization of components is essential for sectors like watchmaking and electronics. The complexity of micro-forming processes requires suitable behavior models to optimize the manufacturing of very small parts. The variability of material behaviors at this scale poses a major challenge that this research aims to overcome.

By developing plasticity models, the research has identified isotropic and anisotropic behaviors of copper alloys, crucial for ensuring the precision of produced parts. These models provide a better understanding of the mechanical properties of materials at the microscopic scale, which is fundamental to avoid functional failures in critical applications like electronic components.

The results of this research have strategic implications for decision-makers and industrialists, allowing them to optimize micro-forming processes. Recommendations include adopting these models to improve product quality and reduce production costs, while emphasizing the importance of ongoing research to integrate new technologies in this rapidly expanding field.

« « My research has identified essential isotropic and anisotropic behaviors to ensure the precision of produced parts, which is crucial in sectors like electronics. » »

« « The optimization of micro-forming processes for copper alloys opens interesting perspectives for decision-makers, facilitating access to innovative solutions for modern industry. » »