Formulas Flashcards
1
Q
dmin = 2.44 fn/D M2
A
Min Spot Size (add spherical abberation da)
2
Q
M2 = 1 + 2n + m
A
Beam Quality (n is first number, m is second)
3
Q
da = kD3/f2
A
Spherical Abberation
4
Q
Vd
A
Drilling Penetration Velocity
5
Q
Vm
A
Drilling Melt Ejection Rate (Volume/s)
6
Q
F
A
Power/Area
7
Q
alpha
A
k/pC
8
Q
Xmax
A
Max melt depth before surface boils
9
Q
rf
A
reflectivity
10
Q
tv or tm
A
Time to reach melt or vaporisation temp at surface
11
Q
X(t)
A
Melt depth as a function of time
12
Q
T(t)
A
Temp at surface as a function of time
13
Q
H = a+b etc.
A
Hardening, case depth (a+b are material constraints should be given)
14
Q
NSHD
A
Nominal skin hazard distance
15
Q
NOHD
A
Nominal occular hazard distance
16
Q
MPE
A
max permissible energy
17
Q
Which formula is specular (reflection) and which is scatter?
A
Left is specular, right (cos) is scatter
