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10 Mar - "The importance of the prognosis and diagnosis of composite structures in engineering design. How to increase the safety of aircrafts?" Lecture by Volnei Tita, Sao Carlos School of Engineering – University of Sao Paulo (USP), Brazil

The visit of Volnei Tita is organised in collaboration with Nicholas Fantuzzi from the Department of Civil, Chemical, Environmental, and Materials Engineering.

Mar 10, 2020 from 03:00 PM to 05:00 PM

Where Sala Rossa, Palazzo Marchesini, via Marsala 26, Bologna (first floor)

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Recent improvements in manufacturing processes and materials properties associated with excellent mechanical characteristics and low weight have become composite materials very attractive for application on different fields. However, even new designs are still very conservative, because the composite structure failure phenomena are very complex. Although several models and failure criterion already exist for the prediction of damage in composite materials, most models do not produce acceptable results for detailed designs. This occurs as most of these models are based upon phenomenological or semi-empirical data, which adjust failure surfaces or failure envelopes to experiments. This seminar shows the principal fundamentals to design and analyze composite structures. Thus, it is presented approaches for overcoming the main challenges, which focus on prognosis and diagnosis of composite structures. Regarding to prognosis of composite structures, new damage and failure models based on multiscale analysis and physical failure mechanisms based on Continuum Fracture Mechanics are shown and discussed. Regarding to diagnosis of composite structures, development of SHM (Structural Health Monitoring) systems combining different methods are presented and discussed its limitations and advantages. Finally, it is shown how those approaches affects the industry, mainly in the aeronautical field.