| 简介 |
An apparatus for the detection of defects utilizing non-destructive flux leakage techniques in ferrous materials includes rare earth magnets which are supported at an angle in the order of 45 degrees with the surface of the test specimen to induce a magnetic field within the material. The angled arrangement draws the field into the specimen over a larger surface area, reducing reluctance and ensuring that the field does not shallow within the material. The device provides real-time, three dimensional, visual feedback to the user and includes built- in means for data storage and retrieval without the need for an external computer interface. A distance sensor is used to correct the signal from the sensor array for distance from the surface. A position analyzing device utilizes the magnetic field to determine the position of the apparatus along the surface of the test material, increasing the accuracy in position measurement during testing. |
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