The current Research Project deals with the development of Advanced CFRP Technologies for the cost-efficient, green and reliable manufacturing of stiffened wing large Aerostructures by Liquid Resin Infusion (LRI). The LRI process, especially for large scale structures, is not yet well mastered and validated simulation tools are a necessary requirement to properly industrialize this technology.Two major points will be adressed in this project : the development of an optimized simulation methodology for LRI process with large parts and stiffened wing skin panels, and the generation of an in-depth understanding of the flow phenomena in LRI and more experimental data and experience.The whole methodology will be based on commercial software but considering an accurate and cost-efficient physical approach.Second innovation lies in the design and development of an innovative test bench for validation and development of the LRI technology. This test bench will integrate the latest generation dielectric sensors allowing us to get accurate results.