Sonic welding is now being used to crimp wires, cables, flex circuits, and other products where gas-tight and moisture-resistant connections are needed. The Sonicrimp technique, developed by Methode Development Co. (www.methode.com/mdc/), is said to be the first that works with these products, using a combination of high pressure and sonic energy to complete the electrical connection. Problems—including solder bridging and silver migration—are eliminated with the Sonicrimp technique, which can even be used on flat flex cables often used in automotive applications.
Producing high-quality end-production metal parts with additive manufacturing for applications like aerospace and medical requires very tightly controlled processes and materials. New standards and guidelines for machines and processes, materials, and printed parts are underway from bodies such as ASTM International.
Engineers at the University of San Diego’s Jacobs School of Engineering have designed biobatteries on commercial tattoo paper, with an anode and cathode screen-printed on and modified to harvest energy from lactate in a person’s sweat.
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