From: Minimizing thermal damage to vascular nerves while drilling of calcified plaque
Material | Plaque | Drill bit (WC) | Drill bit (NT) |
---|---|---|---|
Density (kg/m3) | 2050 | 1800 | 4500 |
Young modulus (GPa) | 13.80 | 540 | 450 |
Passion’s ratio | 0.33 | 0.28 | 0.25 |
Thermal conductivity (W/m °C) | 0.51 | 40 | 19 |
Specific heat (J/kg °C) | 516 | 203 | 603 |
Expansion (1/°C) | 2.7e−6 | 4.7e−6 | 9.4e−6 |
Initial yield strength | 50 | – | – |
Hardening coefficient | 101 | – | – |
Coefficient of strain rate | 0.03 | – | – |
Coefficient of strain hardening | 0.08 | – | – |
Coefficient of thermal softening | 0.9 | – | – |