METHOD OF DETERMINATION OF STRUCTURAL STRESS COEFFICIENT Russian patent published in 1998 - IPC

FIELD: examination and analysis of materials. SUBSTANCE: structural stresses of binding composition are determined by tuning of its frequency to resonant one and measuring of resonant frequency relation to frequencies mostly at low frequencies. Primary and secondary resonant frequencies are determined, and value sought for is determined by maximum difference of primary and secondary resonant frequencies, with oscillation amplitude of binding composition reduced to the end at its primary resonant frequency and by maximum value of oscillation amplitude of binding composition at its second resonant frequency and relative to the latter. EFFECT: more accurate determination of binding composition structural coefficient. 2 cl, 1 tbl, 1 dwg