These magnetic particle brakes have a hollow shaft, and don't need a precision alignment shaft for installation. They slide on and couple with a roll pin or integral clamp, a torque arm holding the brake's body still. They are used where variable, smooth slip torque is needed, such as in winding systems. Input current controls the unwind tension. Torque comes from magnetizing microscopic stainless steel spheres. A higher electric input makes for a stronger internal magnetic field, which creates higher torque that is independent of slip RPM. Hollow shaft brakes from 0-15 to 220 lb-inches. Larger solid shaft brakes, as well as clutches up to 300 lb-feet with 1,900W heat dissipation are available from stock.
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.
Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.