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Ultrasonic Formula
Longitudinal Wave
Velocity
Where:
Shear Wave Velocity
Where:
VL
=
E
=
ρ
μ
=
=
Longitudinal Wave
Velocity
Modulus of
Elasticity
Density
Poisson’s Ratio
Refraction
(Snellʼs Law)
Where:
θΙ
=
θR
=
V1
=
V2
=
Vs
E
ρ
μ
G
=
=
=
=
=
Where:
Shear Wave Velocity
Modulus of Elasticity
Density
Poisson’s Ratio
Shear Modulus
Acoustic Impedance
Where:
Angle of the Incident
Wave
Angle of the Reflected Wave
Velocity of Incident
Wave
Velocity of Reflected
Wave
Z
ρ
V
=
=
=
Wavelength
=
=
=
λ
V
F
Wavelength
Velocity
Frequency
Reflection Coefficient
Where:
Acoustic Impedance
Density
Velocity
R
Z1
=
=
Z2
=
Reflection Coefficient
Acoustic Impedance of
Medium 1
Acoustic Impedance of
Medium 2
Beam Spread
Half Angle
Near Field
Where:
N
D
λ
V
=
=
=
=
Where:
Near Field
Transducer Diameter
Wavelength
Velocity
λ
D
V
F
=
=
=
=
Decibel (dB)
Gain or Loss
Where:
Wavelength
Transducer Diameter
Velocity
Frequency
dB
A1
A2
=
=
=
Decibel
Amplitude 1
Amplitude 2