Volume 2, Number 4

October 2003

 

TNT FYI:

Figures 1-3

Practical Contact Ultrasonic - Defining Terms and Principles

Figure 1. Schematic of transducer assembly.

 

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Figure 2. Diagram of probe or search unit showing transducer with 70 degree wedge angle attached and refracted sound beam entering test piece 20 degrees down from plane of part surface.

 

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Figure 3. Piezoelectric crystals convert electronic impulse to sound energy that is emitted as waves.  Discrete waves immediately in front of each sound initiation point form the near field.  Individual wave trains converge to form unified wave train called far field.

 

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