ULTRASONIC METHOD FOR MEASURING THE HEIGHT OF VERTICALLY ORIENTED PLANAR DEFECTS IN GLASS-CERAMIC MATERIALS OF AIRCRAFT STRUCTURAL ELEMENTS Russian patent published in 2021 - IPC G01N29/04 

FIELD: aircraft engineering.

SUBSTANCE: invention is used to measure the height of vertically oriented planar defects (cracks) in glass-ceramic materials of aircraft structural elements. The essence of the invention lies in the fact that ultrasonic waves, using a direct combined ultrasonic transducer, pulses of longitudinal ultrasonic vibrations in are excited in the product in the direction coinciding with the plane of the defect, and ultrasonic vibrations reflected by the bottom surface of the product are received, in order to increase measurement accuracy, calculate the ratio of the amplitude of the ultrasonic longitudinal wave reflected from the bottom surface that passed through a vertically oriented planar defect (crack) of an aircraft structural element, ultrasonic waves in the frequency range from 10 MHz to 20 MHz are applied to the amplitude of the ultrasonic longitudinal wave reflected from the bottom surface that has passed through the area of the aircraft structural element without a defect.

EFFECT: increasing the accuracy of measuring the height of vertically oriented planar defects in glass-ceramic materials of aircraft structural elements.

1 cl, 4 dwg