3 ms·
And measured in units I've not heard of before. The toughness was "as high as 500 megapascals square root meters".
by eesmith 4y ago
And 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.)