xv
Nomenclature
A
amplitude of vibrations (mm)
C
material constant
E
Elastic modulus or Young’s modulus (GPa)
E surf surface binding energy (eV)
F 0
ion dose (ion/cm 2 )
f
frequency (Hz)
f p
frequency of the pulses (Hz)
I
current (A)
k φ
efficiency dependent on cutting angle φ
p
pressure (Pa)
P
power (W)
T g
glass-transition temperature (°C)
t p
duration of the pulses (s)
t x
fragility criterion, relation of shear strength of a material σ to the applied
normal stress τ
U
voltage (V)
v
velocity (m/s)
v t
velocity of a tool vibration (m/s)
η
efficiency
σ
shear strength of a material (MPa)
σ y
elastic limit (yield stress) (MPa)
τ
normal stress (MPa)
φ
cutting angle (°)