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CONTENTS № 4 (April) 2021

Danilov V. N. ABOUT HEAD WAVES AND UNDER-SURFACE LONGITUDINAL WAVES, RADIATED BY THE NORMAL PROBE WHICH IS TAKING PLACE ON A FREE FLAT SURFACE OF THE ELASTIC ENVIRONMENT (pp.4-19)

Ushakov V. M. SOME ASPECTS OF NON-DESTRUCTIVE TESTING OF EQUIPMENT AND PIPELINES OF NUCLEAR POWER PLANTS (pp.20-26)

Shkatov P. N., Didin G. A., Ermolaev A. A. INCREASING SENSITIVITY OF EDDY CURRENT NON-DESTRUCTIVE TESTING OF DELAMINATION IN CARBON-FIBER REINFORCED PLASTICS (pp.28-37)

Larin A. A., Fedotov M. Yu., Budadin O. N., Aniskovich V. A., Kozel’skaya S. O., Reznichenko V. I. ON THE EXPERIENCE OF COMPUTED X-RAY TOMOGRAPHY OF REINFORCED THREE-STRINGER PANELS MADE OF POLYMER COMPOSITE MATERIALS (pp.40-49)

Kireev А. N., Kireeva M. A. ANALYSIS OF THE ERROR IN DETERMINING THE EQUIVALENT SIZE OF A DEFECT BY THE STANDARDLESS METHOD DURING ULTRASONIC TESTING (pp.50-57)

Shpenst V. A., Morozova O. Yu., Beloshitskii A. A. COMPARISON OF DOMESTIC UNMANNED AIRCRAFT SYSTEMS AS DIAGNOSTIC TOOLS FOR ELECTRIC POWER FACILITIES (pp.58-63)