Electromagnetic ultrasonic probe and method for detecting pipeline by using same

2010 
The invention provides an electromagnetic ultrasonic probe and a method for detecting a pipeline by using the electromagnetic ultrasonic probe. The electromagnetic ultrasonic probe comprises a probe frame, an emission probe and a receiving probe, wherein the probe frame is provided with an installation space. The emission probe is fixed in the installation space, and has a predefined angle with avertical direction. By applying a blended excitation current comprising a high-frequency impulse and a low-frequency impulse to the emission probe, the emission probe generates two different ultrasonic waves for detecting objects to be tested. The receiving probe is fixed in the installation space, symmetrical to the emission probe relative to the vertical direction, and used for receiving the ultrasonic waves reflected by the objects to be tested.
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