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sustainable designPhys Org
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87% Informative
Researchers at the Weizmann Institute of Science show how design tricks employed by ancient creatures such as scorpions and sponges can help optimize the resilience of human-made materials.
The study examined two natural laminates that show an exceptional degree of toughness: the outer shell, or cuticle, of a scorpion and the inner skeleton of a sea sponge.
In both creatures, the different layers vary in thickness, and in the scorpion's shell, they also decrease in stiffness from exterior to interior, helping them withstand the types of stress they are faced against.
A better understanding of the strategies found in natural composite materials could help engineers optimize our own human-made composites.
In the sea sponge's skeleton, cracks are slowed down or stopped by the fact that brittle layers are interspersed with softer layers.
Wagner and Greenfeld , who have been working together for over a decade, come from different professional backgrounds.
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