SPECTRAL ACOUSTIC METHOD FOR REVEAL OF DISTORTIONS OF COMPLETENESS OF CONCRETE CONSTRUCTIONS

摘要

Spectral acoustic method for reveal of distortions of of completeness of concrete constructions is in excitation in material under investigation of acoustic waves, reception of signals at wave pass before and after object of control and determination of physical-mechanical properties of material by delay in time of propagation of acoustic waves, by change of amplitude-frequency characteristic, by change of amplitude-time characteristic. One generates acoustic vibrations with determination of physical-mechanical properties by decay of amplitude-frequency and amplitude-time characteristics.