What is the main role of the basic scanning method of the oblique probe during flaw detection?

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What is the main role of the basic scanning method of the oblique probe during flaw detection?

What is the main role of the basic scanning method of the oblique probe during flaw detection?

Zigzag inspection refers to the simultaneous use of front, back, left and right, and corner scanning. The scanning method of zigzag movement can check for defects in the weld.Left and right scanning: the scanning method of the probe moving parallel to the direction of the weld. The length of the longitudinal defect of the weld can be inferred.Before and after scanning: infer the defect depth and its height.Corner scan: determine the directionality of the defect.

The front-back, left-right, and corner scans are performed simultaneously to find relatively large echoes of defects, and then determine the location of the defect.

Surround scan: Infer the shape of the defect.

Parallel and oblique parallel inspection and cross-scanning: to detect transverse defects in welds and heat affected zones.

Tandem scanning: Detecting planar defects perpendicular to the flaw detection surface.