Pipeline axial ultrasonic guided wave energy exchange probe
An ultrasonic guided wave and pipeline technology, used in pipeline systems, using sonic/ultrasonic/infrasonic waves to analyze solids, and using sonic/ultrasonic/infrasonic waves for material analysis, etc. problems, to achieve the effect of a wide range of applicable materials, a large amplitude, and a high signal-to-noise ratio
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[0017] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.
[0018] As shown in Fig. 1 and Fig. 2, the present invention includes a pre-magnetized nickel-iron alloy sheet 1 and multiple groups of coil strips 2, wherein:
[0019] The nickel-iron alloy sheet 1 is rectangular, and is magnetized along one side to form a pre-magnetized nickel-iron alloy sheet, so that the nickel-iron alloy sheet 1 has a static bias magnetic field. Then the nickel-iron alloy sheet 1 is tightly fixed on the outer wall of the pipeline to be tested 3 along the circumferential direction of the pipeline to be tested 3, so that the residual magnetic flux density B on the nickel-iron alloy sheet 1 is r distributed along the circumferential direction of the pipeline 3 to be tested.
[0020] The multi-group coil strip 2 is a multi-group coil formed by winding a wire on the pre-magnetized nickel-iron alloy sheet 1 fixed on the outer wall of t...
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