Exploiting the temperature-memory effect in 3D printed auxetic structures

Stefano Pandini

from experimental design to analytic simulation.

The combined employ of the additive manufacturing approach with shape memory polymers (SMPs) is one of the possible strategies towards 4D-printing, in particular when aiming at the realization of highly effective shape shifting objects. SMPs are in fact active systems, capable of being temporarily fixed in a deformed configuration and to revert to the pristine shape upon application of a thermal stimulus. In addition, this response may be finely tuned by a proper combination of the thermo-mechanical history and of the material macromolecular architecture.

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4D printing of composites.

wing

A presentation by professor Suong Hoa, Director, Concordia Center for Composites (CONCOM), Canada.

4D printing of composites (abbreviated as 4DPC) is a manufacturing technique that can produce composite structures with complex geometries without the need for complex molds. The technique is also termed “Mouldless composite manufacturing”. This technique utilizes light weight, high strength, high stiffness composite materials that have been used to make light weight components for space structures, aircrafts, automobiles. wind turbine blades, and sports equipment.

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The status, barriers, challenges and future of 4D printing in design and engineering

engineering

A duo presentation by Frederic Demoly, Associate Professor at Université Bourgogne Franche-Comté, UTBM and Jean-Claude Andre, CNRS.

Over the past decades, the combination of technical/scientific advances in additive manufacturing (AM) and smart materials (SMs) domains has enabled the booming development of a new interdisciplinary converging research area: 4D printing.

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Enabling hierarchical motion in 4D printed structures by means of the temperature-memory effect in polymers: experimental and computational aspects

structures

A presentation by Giulia Scalet, Assistant Professor, DICAr, University of Pavia.

4D printing is a disruptive additive manufacturing paradigm that utilises active materials to produce customized structures capable of changing their shape, properties, and functionalities over time (the 4th dimension) under the application of proper stimuli.

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