Chelyabinsk: CNTI, 2000. - 227 s. The book deals with the defects of welded compounds, the causes of their occurrence and their classification. Methods for calculating the strength of welded joints with defects are described, taking into account their mechanical heterogeneity. Approaches to normalization of welding defects. The physical basis, sensitivity and classification of control methods using ionizing radiation, acoustic oscillations, magnetic and electromagnetic fields, capillary phenomena, penetration of liquids and gases, etc. are considered. Recommendations for the selection of non-destructive testing methods for welded structures. The book is intended for a wide range of engineering and technical workers, students of higher educational institutions of engineering specialties and graduate students .