Formulae (1) Flashcards by Roar Coupland

Q

Wavelength Symbol

A

Lambda λ

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Q

Density Symbol

A

Rho ρ

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Q

Frequency Symbol

A

f

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Q

Velocity Symbol

A

V

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Q

Acoustic Impedance Symbol

A

Z

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Q

Thickness Symbol

A

T

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Q

Diameter of transducer Symbol

A

D

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Q

Length near field Symbol

A

NF

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Q

% Reflection

A

(Z2-Z1)²
(——–) x100%
(Z2+Z1)

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Q

% Penetration

A

100%-%Reflection

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Q

Formula for Acoustic Impedance

A

Z= ρ x V

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Q

Formulae for Sound Velocity

A

V = λ x f

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Q

Formula for Incidence Angle

A

Sin01 = Sin02 x V1 / V2

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Q

Formula for Angle of Divergence

A

Sin0 = 1.22 x λ / D

or

Sin0 = 1.22 x V / Df

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Q

Formula for Thickness of Material

A

T = V / 2f

or

T = λ / 2

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Q

Formula for Length of the near field

Study These Flashcards

A

NF = D² / 4λ

or

NF = D² x f / 4V

Q

Formula for Weld Inspection

Study These Flashcards

A

V - Path = 2T / cos0