Question
Download Solution PDFWhich of the following techniques is NOT a type of magnetic particle testing method?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFExplanation:
Magnetic particle testing:
(i) The magnetic particle test is conducted to check for very small voids and cracks at or just below the surface of a casting of a ferromagnetic material.
(ii) The test involves inducing a magnetic field through the section under inspection.
(iii) The powdered ferromagnetic material is spread out onto the surface. The presence of voids or cracks in the section results in an abrupt change in the permeability of the surface; this, in turn, causes leakage in the magnetic field. The powdered particles offer a low resistance path to leakage. Thus, the particles accumulate on the disrupted magnetic field, outlining the boundary of a discontinuity.
Magnetic particle technique:
- Yoke technique
- Prods technique
- Coil technique
- Central conductor
Last updated on May 12, 2025
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