The ultrasound research at our university is counting 35 years of activity. Ultrasound research activities were initiated by Prof. K.Barsauskas in 1962 by founding the Ultrasound Problem Laboratory. Total number of publications over these years exceeds 1000 and together we hold over 150 patents. In the process of research development, there were established new laboratories.
Transducer is positioned by x-y scanner, driven by step motors.
The principle of operation is based on a detection of reflected ultrasonic waves from the delaminated zones. The immersion technique is used during the testing, so the bearing is put in the tank filled with water and scanning procedure of the whole inner surface is performed. At each scanner position the complete ultrasonic signals are acquired by a computer and the decision about quality of adhesion between babbitt layer and metal body can be made. The spatial image of delaminated zones and total area of them are presented in the final NDT report. The ultrasonic NDT system of bearings consist of data acquisition electronic unit, two-coordinate scanner, test tank with centering equipment and IBM PC type computer with a specialized software.