FIELD: nuclear power engineering.
SUBSTANCE: proposed method depends on radiation of ultrasonic signal coming from piezoelectric transducer. This ultrasonic signal is normally applied to external surface of fuel element and to weld surface while moving it over generating line. Echo signals arriving from external and internal surfaces of can and from weld in vicinity of line of extension of can internal surface with time are recorded.
EFFECT: facilitated detection of poor fusion, voids, micropores, and uniformity zone length; enhanced reliability of their detection.
1 cl, 1 dwg
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