Interesting application to link manufacturing elements (here screws) with specifications to determine their proper application or condition. Very useful application it seems.
Smart Screws Keep Bridges, Machines, Wind Turbines Safe
Fraunhofer-Gesellschaft (Germany), May 2, 2022
At Germany's Fraunhofer Cluster of Excellence Cognitive Internet Technologies, researchers developed a self-powered Internet of Things (IoT) device that permits remote monitoring of the stability of screw connections in an object or structure. Smart Screw Connection incorporates sensors and radio technology in a device featuring a screw fitted with a washer containing a piezoresistive DiaForce thin film. The sensors record the preload force at three points when the screw is tightened, and changes in the preload force, which alter the electrical resistance in the thin film, are transmitted via radio module on the screw head to a base station. Fraunhofer's Peter Spies said, "No engineer is required to be on site and check each screw individually, as all the data are transmitted via radio to the service station." .... '
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