PROCESS OF NONDESTRUCTIVE INSPECTION OF QUALITY OF FINISHED CONCRETE ARTICLES

摘要

FIELD: construction industry. SUBSTANCE: process is meant for random or complete nondestructive inspection of finished concrete products. For realization of process inspected article is suspended by flexible members arranged in pairs in two planes perpendicular to longitudinal axis of inspected article. Distance between planes does not exceed distance between sections corresponding to supporting ones under operational conditions. Flexural vibrations are excited in inspected article. Quality of finished concrete article is evaluated by dependence of frequency and decrement of vibrations on distance between planes of its suspension as well by value of parameter characterizing degree of hysteresis dependence of frequency and decrement of vibrations under single-cycle change of distance between planes of suspension. Flexural vibrations can be excited from one of butts of article by means of radiator placed at angle of 5-20 deg with reference to longitudinal axis of article. EFFECT: increased accuracy and informativity of inspection with simultaneous simplification of process. 4 cl, 3 dwg