Application of Exteriorly-Thu-Type Eddy Current Probe in Testing Sucker Rod

The sucker rod is the main loaded component of the oil extraction system in the oil field.If it was broken in the process of production,great losses would be incurred in the suspended operation.The main reason for the break is the crack source in the surface of the sucker rod will spread from surface to interior under the periodic load.This article introduces a kind of self-designed exteriorly-thru-type eddy current probe which can detect the crack source that can lead to the break of the sucker rod,precisely and rapidly,and so,it is suitable for the on-line detection.