Development and manufacturing of non-
destructive testing units and system
Ultrasonic Flaw Detector NOVOTEST UD2301
34
9.6.
Calculations of the equivalent area of the reflector
α – input angle of ultrasonic vibrations in the material;
v
– velocity in the material;
f
– frequency of transducer;
R
– radius of lateral drilling;
x
– depth of the defect;
r
– length of the passage of ultrasonic vibrations to the defect along
the beam;
λ = v/f – the length of the wave in the material;
r0
– the length of near gate of transducer;
π = 3,1415 – constant;
Sp
– effective area of transducer;
Lpr
– length of the path in the prism;
vpr
– velocity of ultrasonic vibrations in a prism.
Equivalent area of the reflector:
for lateral drilling
to the plane (angle)
