Formulae (1) Flashcards
1
Q
Wavelength Symbol
A
Lambda λ
2
Q
Density Symbol
A
Rho ρ
3
Q
Frequency Symbol
A
f
4
Q
Velocity Symbol
A
V
5
Q
Acoustic Impedance Symbol
A
Z
6
Q
Thickness Symbol
A
T
7
Q
Diameter of transducer Symbol
A
D
8
Q
Length near field Symbol
A
NF
9
Q
% Reflection
A
(Z2-Z1)²
(——–) x100%
(Z2+Z1)
10
Q
% Penetration
A
100%-%Reflection
11
Q
Formula for Acoustic Impedance
A
Z= ρ x V
12
Q
Formulae for Sound Velocity
A
V = λ x f
13
Q
Formula for Incidence Angle
A
Sin01 = Sin02 x V1 / V2
14
Q
Formula for Angle of Divergence
A
Sin0 = 1.22 x λ / D
or
Sin0 = 1.22 x V / Df
15
Q
Formula for Thickness of Material
A
T = V / 2f
or
T = λ / 2
