Architected materials---materials with periodic microstructure geometries---can obtain exceptional properties such as high strength to mass ratio, wave manipulation, and reversible shape transformation. Although such metamaterials, if designed precisely, can outperform most natural and synthesized materials in mechanical metrics, their application is limited by the fabrication cost and inevitable design constraints imposed in real situations. For example, while materials with strong wave attenuation can diminish destructive vibrations in many situations, the large porosity and structural compliance of such materials limit their applications. In this talk, I will demonstrate how such secondary constraints can be respected in the design of architected materials for industrial applications.
In the first part of the talk, I will introduce a zero porosity auxetic material designed for applications in gas turbine engines. Such material, made of linear elastic (metallic) sheets, can improve the efficiency of the engines by controlling the lateral clearance between their cylindrical components at high temperatures. In the second part of the talk, I will present an origami-based transformable device with multifunctional properties designed for prolonged drug delivery in the gastrointestinal tract. The device folds inside an ingestible capsule during oral administration. After delivery, the device elastically unfolds to an expanded configuration allowing it to reside in the stomach for weeks. The talk concludes with a short introduction to some of my other work on the design of architected materials for aerospace and energy systems.
Farhad Javid is a Mechanical Research Engineer at Carbon3D. His work focuses on the constrained design of architected materials for applications in transportation, energy systems, and medical devices. Prior to Carbon, Farhad was a postdoctoral associate at MIT and Harvard. He received a Ph.D. in Mechanical Engineering from McGill University in 2014.