AMT Seminar: Multi-functional structural systems - Design and fabrication considerations
Seminar Series in Aerospace Manufacturing Technologies
In the seminar series in aerospace manufacturing technologies, we are presenting invited speakers with selected topics in the field of novel manufacturing technologies. The upcoming seminar talk will be given by Professor Paolo Ermanni from ETH Zürich
The main task of any natural and technical structure is to guarantee functionality and integrity of the system it is part of, and to be light in order to minimise material and energy consumption over the entire lifetime. Having in mind that material, function and form are intimately related to one another, structural efficiency can be im-proved by multi-material approaches, optimal design and integration of functions, relying on both material and structural induced multi functionality. The talk is focussing on multi-functional lightweight design solutions combining composite and Additive Manufacturing (AM) technologies. Carbon Fibre Reinforced Polymers (CFRP) are predestined for applications in load-carrying structures, because of their superior specific strength and stiffness, and consequently their outstanding lightweight potential. Furthermore, the layered arrangement of the material is well suited to adjust the fiber orientation to the load path and realise highly integrated mono-lithic structures with embedded functional/active elements. AM technologies enable on the other side the direct fabrication of multi-material parts with arbitrary geometrical complexity and provide therefore unique fea-tures with regard to the production of weight optimised design solutions, also providing the possibility to inte-grate inserts, structural elements and additional functionalities. Application examples include: (1) lightweight adaptive systems for shape adaptation purposes, relying on both inner structural compliance and passive and semi-active variable stiffness elements and (2) ultra-light, multi-functional sandwich structures made of 3D-printed fiber reinforced lattice materials with embedded adaptive elements.
Paolo Ermanni has been full Professor of structure technologies the ETH Zurich since April 1, 2003. He received his Dr. sc. techn. degree at the ETH Zurich in 1990 under the guidance of Prof. Dr. M. Flemming. His research work was focusing on process technologies for highly integrated aircraft fuselage structures made of composite materials. He spent more than five years at DaimlerChrysler Aerospace Airbus GmbH in Hamburg as a senior engineer and later on, as a project manager. At Airbus he was mainly dealing with structural and technological issues related to the realisation of a second generation of civil supersonic aircraft. In 1997 he took on a new challenge as a manager in the consulting firm A.T. Kearney in Milan. He was appointed associate professor at ETH Zurich in 1998. His interests focus on lightweight and adaptive structures made of composite and smart materials. Research is currently focusing on two areas. The first area includes design, modelling and characterisation of novel material systems and processes. A second focal point of the group is computational structural mechanics including the development of novel optimisation algorithms in conjunction with the numerical simulation of structures and manufacturing processes. The Centre of Structure Technologies is closely working together with different national and international research institutes and industries, seeking a well-balanced project portfolio of fundamental and applied projects.