METHOD FOR NON-DESTRUCTIVE CONTROL OF QUALITY OF BEAM-LIKE CONCRETE CONSTRUCTIONS

摘要

FIELD: testing equipment.;SUBSTANCE: method includes mounting construction on a sand, fixing its ends according to operation conditions, exciting oscillations in non-loaded construction, measuring main frequency and decrement of free or forced oscillations, while excitation of transverse and longitudinal forced oscillations is performed concurrently at resonance frequency at given level of oscillations energy, vibro-graph of amplitude-modulated oscillation process is recorded and used to determine amplitude modulation coefficient. Received data are compared to appropriate dynamic parameters, received for standard construction of given type with same control modes and holding conditions. Quality coefficients of controlled part are determined on basis of comparison.;EFFECT: higher trustworthiness, higher reliability, higher efficiency.;2 cl, 3 dwg