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"MAMA BEAR – which stands for Mechanics of Additively Manufactured Architectures Bayesian Experimental Autonomous Researcher – 3D prints small structures before gently placing them into a hydraulic press and crushes them. It measures the energy absorption of each little creation it makes as it flattens them into little plastic pancakes. MAMA BEAR then stores the numbers in a database, taking note of each design and its flaws or improvements before slightly modifying the design and diligently 3D printing another iteration – for the last three years straight. Over 25,000 times so far. ..."
"... To do this, the robot creates a small plastic structure with a 3D printer, records its shape and size, moves it to a flat metal surface—and then crushes it with a pressure equivalent to an adult Arabian horse standing on a quarter. The robot then measures how much energy the structure absorbed, how its shape changed after being compressed, and records every detail in a vast database. Then, it drops the crushed object into the box and wipes the metal plate clean, ready to print and test the next piece. It will be ever-so-slightly different from its predecessor, its design and dimensions tweaked by the robot’s computer algorithm based on all past experiments—the basis of what’s called Bayesian optimization. Experiment after experiment, the 3D structures get better at absorbing the impact from getting crushed. ..."
A robot on a mission See how an autonomous robot created a shock–absorbing shape no human ever could—and what it means for designing safer helmets, packaging, car bumpers, and more
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