Engineers have taken their inspiration from shells and grapefruits to create what they say is the first manufactured non-cuttable material.
This new material, which could be used in the security and health and safety industries, can turn back the force of a cutting tool upon itself. The lightweight material – named Proteus after the shape-changing mythical god — is made of ceramic spheres encased in a cellular aluminium structure that in tests could not be cut by angle grinders, drills or high-pressure water jets.
An international research team, led by Durham University, UK, and Fraunhofer Institute for Machine Tool...
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