pulse-echo method of ultrasonic inspection

pulse-echo method of ultrasonic inspection

A form of nondestructive inspection used to detect the presence of internal damage or faults in a piece of aircraft structure. Pulses of ultrasonic energy are introduced into the material being inspected, and the time required for these pulses to travel through the material and return to the transducer is measured.

If there is a fault in the material, the pulses will bounce off it, rather than traveling all the way to the rear surface of the material. This short travel time indicates the presence of a fault.

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Category: Aeronautics
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