FIELD: nondestructive testing; ultrasonic testing of welded seams of metals and alloys.
SUBSTANCE: proposed specimen is made in form of body with artificial defect and at least one groove with root which is welded-up. Specimen is made in form of tube and artificial defect is made on opposite side of groove in form of bore for simulating an actual defect; width of bore is equal to sum of shrinkage of metal after welding and width of actual defect in article and depth of bore and groove is varying over end face of specimen while root is constant. Step of groove may be made from metal of weld seam and additional bore may be made in one of corners of groove.
EFFECT: possibility of forming extended real defects in specimen; enhanced reliability of testing.
3 cl, 2 dwg
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