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- Title
Superlative mechanical energy absorbing efficiency discovered through self-driving lab-human partnership.
- Authors
Snapp, Kelsey L.; Verdier, Benjamin; Gongora, Aldair E.; Silverman, Samuel; Adesiji, Adedire D.; Morgan, Elise F.; Lawton, Timothy J.; Whiting, Emily; Brown, Keith A.
- Abstract
Energy absorbing efficiency is a key determinant of a structure's ability to provide mechanical protection and is defined by the amount of energy that can be absorbed prior to stresses increasing to a level that damages the system to be protected. Here, we explore the energy absorbing efficiency of additively manufactured polymer structures by using a self-driving lab (SDL) to perform >25,000 physical experiments on generalized cylindrical shells. We use a human-SDL collaborative approach where experiments are selected from over trillions of candidates in an 11-dimensional parameter space using Bayesian optimization and then automatically performed while the human team monitors progress to periodically modify aspects of the system. The result of this human-SDL campaign is the discovery of a structure with a 75.2% energy absorbing efficiency and a library of experimental data that reveals transferable principles for designing tough structures. It is challenging to design tough structures based on energy absorbing efficiency owing to the difficulties in modeling non-linear deformation. Here, the authors report a human-monitored self-driving lab and discover structural motifs with high energy absorbing efficiencies up to 75.2%.
- Subjects
ENERGY consumption; CYLINDRICAL shells; MECHANICAL ability; POLYMER structure; MECHANICAL energy; DATA libraries
- Publication
Nature Communications, 2024, Vol 15, Issue 1, p1
- ISSN
2041-1723
- Publication type
Article
- DOI
10.1038/s41467-024-48534-4