METHOD OF ULTRASONIC INSPECTION OF PARTS MADE OF ALLOYS (VERSIONS) Russian patent published in 2008 - IPC G01N29/04 

FIELD: physics.

SUBSTANCE: ultrasonic pulses are introduced into the part material through the external surface of the part; during the reception of the mixture of ultrasonic pulses reflected from part material structure irregularities, the signal values are measured discontinuously since the preset time t₁ until the preset time t₂ with a period of (t₂-t₁)/n, where n is the number of measurements within the time interval t₁ to t₂, the measured values are memorised, the average value of the measured reflected ultrasonic pulse values and the standard deviation of the mixture of reflected ultrasonic pulses relative to the calculated average value within the time interval (t₂-t₁) are determined, and the part end-of-life is evaluated by the increase in the standard deviation of the mixture of the reflected ultrasonic pulses for the part inspected, relative to the standard deviation value, measured similarly, of the mixture of reflected ultrasonic pulses for a sample of an unused part made of the same material as the part inspected.

EFFECT: evaluation of end-of-life of alloy parts.

2 cl, 10 dwg