FIELD: acoustic methods of non-destructive control.
SUBSTANCE: method includes mounting a piezo-converter at an angle to product in such a way, that only transverse waves are transferred through product. In each control point full realization of reflected ultrasound signal is fixed, smoothing and separation of contour line of this realization is performed and after scanning whole section of welded seam section image is built. Bounds area with presence of pores are determined by calculation of centers of gravity of images of external and internal surfaces of product. Search for maximums of amplitude of signals in this area is performed. On basis of coordinates of gravity centers of images, containing maximums of signals, coordinates and size of pores are determined.
EFFECT: higher precision, broader functional capabilities.
2 dwg
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