3 ms·
I think this article is missing a basic definition of “toughness”. > In materials science and metallurgy, toughness is the ability of a material to absorb ener
by bryan0 4y ago
I think this article is missing a basic definition of “toughness”.
> In materials science and metallurgy, toughness is the ability of a material to absorb energy and plastically deform without fracturing.
https://en.m.wikipedia.org/wiki/Toughness https://en.m.wikipedia.org/wiki/Toughness
- eesmith 4y agoAnd measured in units I've not heard of before. The toughness was "as high as 500 megapascals square root meters".
- ghaff 4y agoI had to double-check given how old my knowledge in this area is but MPa m^1/2 does indeed seem to be the unit used to measure toughness using diamond indenters etc. More precisely, it apparently describes the Fracture toughness, which is an indication of the tendency of the material to allow for a free propagation of a crack while under stress. The higher the value, the more energy the material absorbs and less freely does the crack propagate. (Toughness modulus is in Pascals.)