3B Scientific Ultrasonic Echoscope User Manual

Page 10

If c

and c

are known, the Poisson number

can also

be calculated by means of equation (11):

−

(

)

−

2 1

1 2

(11)

4.12. Combination of B image and A scan for

testing materials

To demonstrate the testing of materials, a body with
invisible discontinuities is provided. A manually guided
B image can be used to gain an initial idea of where
the discontinuities lie. The precise coordinates can then
be determined and plotted with the help of an A scan.

5. Technical details

5.1 Ultrasonic echoscope U10010
Frequency range:

1 MHz to 5 MHz

Measuring mode:

can be switched between
pulse-echo and
transmission modes

Transmitted signal:

Dirac pulse
(<1µs, 10 V – 300 V)

Transmitter power:

0 30 dB, in 10 dB steps

Gain:

0-35 dB, in 5 dB steps

Time-dependent
amplifier:

continuously adjustable
threshold, start point, rise time
and duration, up to 30 dB gain

Connections:

TGC signal, trigger, NF signal,
HF signal all via BNC
sockets (Var. Ex)

Computer port:

Sub D-25 socket on LPT
via male-male cable

Sampling rate:

10 MHz per channel

Dimensions:

256 x 257 x 156 mm

Mains voltage:

115 V / 230 V switchable

Power consumption: max. 20 VA

5.2. Ultrasonic transducer 1 MHz U10015
Dimensions:

65 mm x 27 mm

∅

5.3. Ultrasonic transducer 4 MHz U10017
Dimensions:

65 mm x 27 mm

∅

5.4. Acrylic block with holes U10027
Dimensions:

150 x 80 x 40 mm

5.5 Equipment set for longitudinal and transverse

ultrasound propagation U10020

Sound trough:

200x100x60 mm

Protractor scale:

360°, with 5° divisions

Acrylic plate:

70 x 45 x 10 mm

Dimensions:

104 x 75 x 50 mm

5.6 Aluminum block with protractor scale U10022
Protractor scale:

360°, with 5° divisions

Aluminum block:

70 x 45 x 50 mm

Dimensions:

104 x 75 x 50 mm

5.7. Polyoxymethylene (POM) plate with protractor

scale U10023

Protractor scale:

360°, with 5° divisions

POM plate:

70 x 45 x 10 mm

Dimensions:

104 x 75 x 50 mm

5.8. Reflection plate U10025
Dimensions:

80 x 40 x 10 mm

5.9. Set of 3 cylinders U10026
Dimensions:

40 mm x 40 mm

∅

80 mm x 40 mm

∅

120 mm x 40 mm

∅

5.10. Heart valve model U10029
Dimensions:

160 mm x 70 mm

5.11. Model of a single breast with benign

tumor L55/1

Model breast made of silicon rubber with simulated
benign growth

6. Bibliography

Millner, R.: Ultraschalltechnik – Grundlagen und
Anwendung. Physik-Verlag, 1987
Kuttruff, H.: Physik und Technik des Ultraschalls. S.
Hirzel-Verlag Stuttgart, 1988
Krautkrämer, J., Krautkrämer, H.: Werkstoffprüfung mit
Ultraschall. Springer Verlag, 1968
Weiterführend:
Sutilov, V.A.: Physik des Ultraschalls. Akademie-Verlag,
Berlin, 1984
Morse, P.M., Ingard, K.U.: Theoretical Acoustics.
McGraw-Hill Book Company, New York, 1968

3B Scientific GmbH • Rudorffweg 8 • 21031 Hamburg • Germany • www.3bscientific.com • Technical amendments are possible