08-07-2018, 09:02 AM
Larrin, thanks for sharing your quite extensive article about sharpness and cutting ability. 
If I understand you correctly, you prefer the sharpness definition based on energy necessary to initiate a cut of a test medium as it is embodied in the Blade Sharpness Index (BSI) definition.
The smallest razor blade apex radius considered in the original papers by McCarthy et al. 2007 and 2010 is 1 micron. The corresponding BSI index is some 0.2.
In the BESS approach we are considering that DE razor blade apex radius of 0.05 microns corresponds to BESS score 50 gf.
I am wondering what is the reason for such a large difference in the apex dimensions considered in the BSI and BESS approaches.
Jan
If I understand you correctly, you prefer the sharpness definition based on energy necessary to initiate a cut of a test medium as it is embodied in the Blade Sharpness Index (BSI) definition.
The smallest razor blade apex radius considered in the original papers by McCarthy et al. 2007 and 2010 is 1 micron. The corresponding BSI index is some 0.2.
In the BESS approach we are considering that DE razor blade apex radius of 0.05 microns corresponds to BESS score 50 gf.
I am wondering what is the reason for such a large difference in the apex dimensions considered in the BSI and BESS approaches.
Jan