Cracking Down on Fracture to Functionalize Damage
Marcelo Dias (University of Edinburgh)
Thursday 2nd October 14:00-15:00
Maths 311B
Abstract
Mechanical metamaterials achieve extraordinary responses by virtue of their architecture. In this talk, I will discuss a few examples of how geometry and topology can be harnessed to create functionality through clever mechanics. Yet manufacturing constraints—minimum feature size, build volume, multi-material integration and defect control—limit scalable realization of metamaterials. Embedding fabrication constraints into the design loop via reduced-order models and high-fidelity data lets us predict how size effects, process variability and material nonlinearities are a critical step in reducing this phenomenological gap. The result is a true design-for-manufacture workflow that delivers adaptive, multistable metamaterials that are both physically realizable and predictably fail-safe at scale.
To illustrate these ideas, I will introduce the “meta-adhesive”: an adhesive bondline engineered around a metamaterial lattice. By tuning the lattice topology, we can guide crack paths, boost fracture toughness and extend life-cycle of structural components. This concept directly supports circular-economy goals by creating joints that last longer, can be reused or repurposed and generate less waste. By embracing controlled failure and geometric nonlinearity—and by integrating smart design, next-generation fabrication and sustainability principles—we hope to contribute to develop a new class of adaptive, high-performance materials and bonding strategies that satisfy both mechanical demands and environmental imperatives.
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