4 ms·

I think the idea is that the deformation isn't permanent--after compressing, it will spring back.

• electromagnetic 17y ago
  Agreed. How I read it 'deformation' is being used to describe an irreversible change to the metal foam's structure. This is akin to the flex-frames used in glasses, they frequently lose their originally designed form (deforming), however they will retain it once the external force is removed. I believe they should be using 'permanent deformation' here to clarify the importance. Although I'm sure there's likely a better and more accurate term out there. It is confusing if you read 'deform' as you would for the result gained from poking styrofoam or bending a spoon.
  • tsawtell 17y ago
    The materials science term for permanent deformation is plastic deformation. Deformation from which the material spontaneously recovers is called elastic deformation. I think the article is indicating that the metal foam can undergo up to 80% elastic deformation.