METHOD AND DEVICE FOR NONDESTRUCTIVE INSPECTION OF MATERIAL OF TEST OBJECT USING ULTRASONIC WAVES Russian patent published in 2011 - IPC G01N29/04 

FIELD: physics.

SUBSTANCE: test object (10) is divided into a predetermined number of solid elements using a computer; the test object (10) is exposed to ultrasound on multiple surface elements when scanning the surface or at least part of the surface of the test object (10); acoustic waves reflected on solid elements are picked up when scanning multiple surface elements on the surface or at least part of the surface of the test object (10) and acoustic waves reflected on the same solid elements and picked up on different surface elements of the test object (10) are summed in phase inside a predetermined interval of angles (Δγ) around the acoustic axis, wherein the angle-dependent amplitude distribution (H₀) in the acoustic field of the probe (16) is used. The angle-dependent amplitude distribution (H₀) in the acoustic field of the probe is used to determine the amplitude of reflected acoustic waves, and the defined number (m) of amplitude values inside the predetermined interval of angles (Δγ) around the acoustic axis is summed in order to calculate the value of the reference reflector, which could have generated such a sum of amplitude values (H_Sum).

EFFECT: possibility of finding and identifying defects of materials in relatively large test objects with high accuracy.

19 cl, 5 dwg