This is the lecture held in connection with Christian Krogh's PhD defense on January 10th 2020 at Department of Materials and Production, Aalborg University, Denmark.
Abstract:
In order to make the application of advanced composite materials more viable in the industry, issues with high manufacturing costs have to be addressed. The approach taken in the FlexDraper research project is to automate the draping process, i.e. layup on the mold, of entire plies of prepreg fabric by means of a flexible and reconfigurable robot with a grid of movable grippers. The scope of the project is double curved molds of low curvature which are frequently found in the aerospace industry. The present PhD project studies the automatic draping process from a mechanical point of view. This involves the development of a simulation model based on experimental material characterization that can predict e.g. wrinkles and other defects in the layup. Yet, the key matter is the determination robot trajectories that will lead to draped plies of acceptable quality. This matter is addressed by means of a computationally efficient ply model and an optimization scheme.
Assessment Committee:
Associate Jørgen Asbøll Kepler (chairman)
Department of Materials and Production, Aalborg University
Denmark
Professor Jesper Henri Hattel
DTU, Denmark
Stress Engineer Bellucci Giordano
Alfa Romeo, Zürich, Schweiz
Supervisor:
Associate Professor Johnny Jakobsen
Aalborg University, Denmark
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Thanks to Daniel G.H. Sørensen for recording the video.
See more of the research by Christian Krogh:
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