Ultrasound Institute at Kaunus University of Technology

Kaunas University of Technology
Ultrasound Institute
Studentu 50
LT-3031, Kaunas
Lithuania

Ultrasound Institute
Kaunus University of Technology

Phone: +370-7-351430
Fax: +370-7-767138
Email: svilnis@tef.ktu.lt
Home: http://www.ultrasonics.ktu.lt

Ultrasound Institute represent the majority of ultrasound research groups at Kaunas University of Technology, Lithuania. 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.

ULTRASONIC NDE SYSTEM IZOGRAF-4.01

SHORT DESCRIPTION:
Ultrasonic transducer(s), operating in pulse-echo, pitch-catch or through-transmission mode are excited by programmable pulses generator. Transducer is positioned by x-y scanner, driven by step motors.
Every position A scan data is amplified by static and time-variant-gain (TVG) amplifiers, low-pass and high-pass filtered and, if desired, envelope extracted by video detector; converted to binary data using high speed A/D converter.
For More Information on this Product

ULTRASONIC NDT SYSTEM OF BEARINGS

PRINCIPLE OF OPERATION AND APPLICATIONS:
The ultrasonic system for NDT of journal and sleeve bearings enables to determine delaminations between the babbitt layer and the rest of the bearing. 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.

For More Information on this Product

ULTRASONIC ZIRCONIUM TUBE METER

PURPOSE:
Operation of the meter for measurement of zirconium tube diameters and wall thickness is based on the measurement of time-of-flight of ultrasonic pulses in liquids and solids. These measurements are performed along straight lines drawn between the opposite walls via the center of the tube. If the transmitters - receivers of the ultrasonic waves are located on this line, inner diameter and wall thickness can be determined. For compensation of a non-uniform temperature (40-80C) of water inside a tube, the reference channel is used. The ultrasonic zirconium tube meter has been developed for non - destructive testing of zirconium tubes used in channel - type (RBMK) nuclear reactors and is used at Ignalina nuclear plant (Lithuania).
MAIN FEATURES:
· high accuracy;
· one-side access measurement of a wall thickness;
· transmission of the measured data on-line to data bases at a remote PC;
· processing and filtering of acquisited data.

Examples of Other Products and Applications

Differential signal extraction (DSE) processing for delaminations in thin laminates
For More Information on this Product
Ultrasonic tranducers evaluation system ULTRALAB-2
For More Information on this Product

Ultrasonic flow meter, gas leakage, waste water inspection system
For More Information on this Products you may brows the Homepage of the Ultrasound Research Center.

NDTnet 1998 May, Vol.3 No.5

SPECIAL MAY '98 EXHIBITION
Ultrasonic Flaw Detectors