Researchers have significantly improved a new joining technology, interlocking metasurfaces (ILMs), designed to increase the strength and stability of a structure in comparison to traditional techniques like bolts and adhesives, using shape memory alloys (SMAs). ILMs offer the potential to transform mechanical joint design in manufacturing for aerospace, robotics, and biomedical devices.

Using 3D printing, the teams designed and fabricated active ILMs by integrating SMAs, specifically nickel-titanium, which can recover their original shape after deformation by changing temperatures.

Control of joining technology through temperature changes opens new possibilities for smart, adaptive structures without loss in strength or stability and with increased options for flexibility and functionality. In biomedical devices, the ability to adjust implants and prosthetics to body movements and temperatures could offer a better option for patients.

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Topics:
3D Printing & Additive Manufacturing Joining & Assembly Manufacturing & Prototyping Medical Polymers

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