Instability-assisted microfabrication

Reconfiguration of a poroelastic system

Poroelastic system (a Hasbro Koosh ball) subjected to a stream of air varying from 0 to 30 meters per second in a wind tunnel. Like a tree subjected to wind, this poroelastic system becomes more streamlined as the drag load increases.

Reconfiguration of a flexible rectangular plate

As the flow speed inside the wind tunnel is increased from 0 to 20 meters per second, the flexible rectangular plate bends down. As it does so, it becomes more streamlined and reduces its cross-sectional area.
See the paper « Drag reduction by reconfiguration of flexible plates » for more information.

Reconfiguration of a circular plate cut along many radii

As the flow speed in the wind tunnel is increased from 0 to 20 meters per second, the sectors of the disk bend down, hence making the object more streamlined and reducing its cross-sectional area.
See the paper « Drag reduction by reconfiguration of flexible plates » for more information.

Mesurer la pression dans une canette de bière à l’aide de jauges de déformation

Les calculs permettant de trouver la pression dans la canette à partir des déformations mesurées se trouve dans cet extrait des notes de cours de méthodes expérimentales.