Period: 01/01/2018-30/06/2020

Partners: Dassault Aviation (topic manager), Eurecat (Coordinator), AMADE, Sofitec

Project manager: Josep Costa


Other AMADE people involved in project: Aravind Sasikumar, José Manuel, Joaquim Vila Bramon



Funding by:


This project has received funding from the Clean Sky 2 Joint Undertaking (JU) under grant agreement No. 7854333. The JU receives support from the European Union’s Horizon 2020 research and innovation programme and the Clean Sky 2 JU members other than the Union.


Any dissemination of results/communication activity related to the project must indicate that it reflects only the author’s view and that the JU is not responsible for any use that may be made of the information it contains.





In the recent decades, aeronautic industries have emerged in the application of different materials in a primary aircraft structure tailored towards weight optimization. However, within the framework of thermo-mechanical loads, a structure with different materials undergoes differential deformations due to the mismatch in their thermal coefficients. Hence, this project’s prime objective is to propose an optimized design of a hybrid wing box that is made of metallic and composite parts. To achieve this, it is necessary to have a better understanding of the thermally induced loads on the hybrid bolted assemblies. A building block approach, from the thermal characterization of the coupon level specimens to the complete thermal testing of a whole wing box assembly is the frame of the project. In-parallel numerical models are developed to model the thermo-mechanical effects in the hybrid assemblies and are used to facilitate the optimization process.

The topic manager of the project is Dassault Aviation and the consortium is formed by partners who are experienced in composite material manufacturing and design optimization, as well as in experimental and numerical testing of advanced composite structures. Eurecat, the project coordinator is responsible for the designing and optimization process of the whole hybrid wingbox assembly. The experimental characterization at coupon level and the whole assembly is performed by AMADE. In addition, AMADE develops a numerical model to predict the thermal response accurately to be used for the design optimization. The last partner, Sofitec, leads the manufacturing of the different wing box components and their assembly.