A METHOD OF MEASURING THE VELOCITY OF LONGITUDINAL ULTRASONIC WAVES IN LARGE-SIZE CONCRETE PRODUCTS

摘要

A new method of measuring the velocity of ultrasonic waves in extended concrete products of large dimensions using a pair of transducers situated on different sides of the dihedral corner of the object is described. The method enables the velocity of longitudinal waves inside the concrete to be measured and eliminates the effect of the surface layers of the article and correlated interference (structural noise and noise due to the shape of the article) on the results of measurements of the velocity when using the shadow method.