METHODS OF MEASURING ULTRASONIC SIGNAL PARAMETERS IN PRESENCE OF INTERFERENCE Russian patent published in 2017 - IPC G01N29/00 

FIELD: physics, measurement technology.

SUBSTANCE: invention can be used to measure parameters of ultrasonic waves when investigating physical and mechanical characteristics of materials and flaw detection. Before primary measurement, the method includes obtaining information on noise, for which a radiating transducer and a receiving transducer are placed in the investigated medium, followed by exciting and receiving ultrasonic pulses, standardising the amplitude of the first arrival corresponding to the noise wave, recording the obtained pulse, followed by performing primary measurement, standardising the amplitude of the first arrival, superposition thereof with the first arrival of the pulse obtained during preliminary measurement, and performing pulse subtraction. During preliminary measurement, the radiating and receiving transducers are arranged such that after noise compensation, the first arrival is formed in the resultant pulse by the useful signal.

EFFECT: invention improves accuracy of measuring parameters of ultrasonic waves when investigating physical and mechanical characteristics of materials and flaw detection.

2 cl, 10 dwg