Two stiffness phases, activated by strain, within a single architected material. We are pleased to share our work, “Strain-Activated Mechanical Metamaterial with Programmable Dual-Phase Stiffness and Enhanced Energy Absorption.” The proposed auxetic-inspired unit cell incorporates internal locking arms that activate sequentially under compression. At low strain, the structure remains compliant through bending-dominated deformation. As strain increases, […]
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We are pleased to share our recent collaborative publication with the University of Twente on thermal transport in cold-sprayed IN718–copper multi-material structures. The study shows how deposition sequence and post-processing heat treatment influence interfacial microstructure and directional thermal conductivity. Notably, heat treatment increased the in-plane thermal conductivity of GRCop-42/IN718 joints by 131%, highlighting new opportunities […]
Can mechanical surface treatments be used to positionally engineer microstructures? In our latest publication, we explored how selective ultrasonic shot peening (USP) can be used to create bi-directional microstructural heterogeneity in thin 316L stainless steel specimens. By introducing specially designed polymeric masks during USP, we selectively protected regions of the specimen surface, producing a patterned architecture composed of hardened […]
What really happens at the atomic scale when a cold-sprayed particle impacts a substrate at supersonic velocity? Answering this question requires looking far beyond conventional observations. In our latest research, we employed advanced large-scale molecular dynamics simulations involving millions of atoms to uncover the fundamental mechanisms governing interfacial bonding in Cold Spray. The study combines […]
Can two fundamentally different metals be engineered into a bimetallic structures with a tunable balance of strength and ductility? We are pleased to share a new publication from our group, recently published in Materials & Design. The study, “Bimetallic Al–Fe Composites with Tailored Properties Produced by Cold Spray Additive Manufacturing,” examines how retained Fe content and its spatial […]