As new eddy current testing technologies,Eddy Current Arrays and Low Frequency Electro-magnetic Testing are often used to detect workpiece crack defects.In order to study the effectiveness of crack defects in industrial pipeline inspection,Eddy Current Arrays and Low Frequency Electromagnetic Testing were used to detect the prefabricated crack defects on the pipe.The results show that the Eddy Current Arrays can visually display the location and morphology of the defects,and obtain the relative size of the defects.It is sensitive to surface crack defects and can detect 2mm long crack defects perpendicular to the moving direction of the probe.The Low Frequency Electromagnetic Testing can effectively find the crack defects of the inner wall.Under the experimental conditions,the crack defects of longerthan5mm and deeper than 3mm can be found,and the test results are affected by the pipe specification,the length and depth of the crack defects.
Eddy Current ArraysEffectivenessPressure pipeline inspectionLow Frequency Electro-magnetic Testing
万方数据
维普
