TY CONF TI Features of Teaching Laboratory Practical Training in the Discipline “Acoustic Control Technologies” in the Implementation of the Master’s Program “Devices and Methods of Quality Control and Diagnostics” at PSTU KW training in non-destructive testing KW acoustic testing technology KW ultrasonic flaw detector KW basic testing parameters KW measurable characteristics of defects KW samples with defect models JO VII Betancourt International Engineering Forum AU Konshina, V.N. AU Petrenko, A.Y. PY 2026 PB FSBEI HE "Emperor Alexander I St. Petersburg State Transport University"