Quality, precision and reliability to finalize the DOVER innovation project

06 of October 2021

The consortium formed by University of Seville, ISSIM and Sofitec, has designed and developed a new methodology for the manufacture of stiffeners optimized for use in composite wings.

In March 2018 and under the Clean Sky 2 call JTI-CS2-2017-CfP06-AIR-01-26, we launched the DOVER project "Methodology Development and Validation of WEight Optimized Stiffeners Run-Out Design for Future Composite Wings". Its objective was to develop a design optimization tool and a dedicated methodology to configure optimized composite panels. We refer to parameters related to weight, configuration, geometry, lay-up process or fasteners. In short, optimizing the structural composite wing panels to ensure their resistance to potential structural failures.

During this period, the consortium has succeeded in presenting a new demonstrator concept, ensuring its manufacturability and a considerable increase in damage tolerance. In addition, those in charge of new designs will be able to predict the failure of any configuration and obtain a global optimization with considerable time and cost savings. Thus, complex prediction models are no longer required and costly test campaigns are no longer necessary.

As far as Sofitec is concerned, and thanks to our experience and knowledge accumulated in composite materials, we have been responsible for the manufacture of the reference and optimized demonstrators, developing a production process that has fully guaranteed the requirements of the Topic Manager, Dassault Aviation. On the other hand, the University of Seville, coordinator of the project, has also carried out the structural tests of both configurations; and ISSIM engineering has carried out the redesign of the demonstrators.

Congratulations to all the participants in this project, it has been a real pleasure for us to share this process. Thank you!

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