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Pulse Echo Ultrasonic Inspection

Pulse Echo Ultrasonic Inspection


  • Is defined as a Single-side ultrasonic inspection that may be accomplished using pulse-echo techniques. In this method, a single search unit is working as a transmitting and a receiving transducer that is excited by high voltage pulses.
  • Each electrical pulse activates the transducer element. This element converts the electrical energy into mechanical energy in the form of an ultrasonic sound wave.
  • The sonic energy travels through a Teflon or methacrylate contact tip into the test part. A waveform is generated in the test part and is picked up by the transducer element.
  • Any change in amplitude of the received signal, or the time required for the echo to return to the transducer indicates the presence of a defect.
  • Pulse echo inspections are used to find delaminations, cracks, porosity, water, and disbonds of bonded components. Pulse echo does not find disbonds or defects between laminated skins and honeycomb core.

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