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Ultrasonic Transducers

The ultrasonic transducers in this catalog are divided into two
general categories, Contact and Immersion.

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Transducers for the Contact Inspection Method

Straight Beam—Single Element

  • Parts with regular geometry and relatively smooth contact surface
  • Flat or curved contact surface
  • Flaw or backwall parallel to surface or detectable with beam normal to surface
  • Preferred for penetration of thick sections
  • Delay line types improve near surface resolution
  • Requires couplant layer, typically a gel, oil, or paste
  • Typically used for manual inspection

Straight Beam—Dual Element (TR)

  • Transmit and receive elements separated by crosstalk barrier
  • Flaw or backwall parallel to surface or detectable with beam normal to surface
  • Best for thin sections, near surface resolution
  • Requires couplant layer, typically a gel, oil, or paste
  • Typically used for manual inspection

Angle Beam

  • Element mounted on integral or replaceable wedge
  • Uses refraction to transmit shear or longitudinal wave at a predetermined angle
  • Most standard transducers generate shear waves by mode conversion
  • Preferred for parts with inclined flaws, such as welds
  • Available in both single and dual element types
  • Requires couplant layer, typically a gel, oil, or paste
  • Sometimes used in mechanized or automated testing

Product Resource Downloads:

Transducer Selection Criteria and Performance

GE Eddy Current Probes and Accessories

Product Offerings:

Thickness Probes
Conventional Flaw
Phased Array Probes

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