Bobrowski, Zbigniew; Kravtsov, Yury A.; Chmiel, Jarosław; Transportu, Zakład Techniki i Technologii
(Scientific Journals Maritime University of Szczecin, Zeszyty Naukowe Akademia Morska w Szczecinie,
)
A self-oscillating ultrasonic system is suggested for monitoring deformations in ship hulls. The system employs high frequency (about 1 MHz) ultrasounds exciting the hull material.
Stress changes manifest themselves in small but detectable variations of frequency in the self-oscillating system. The suggested system can be applied for continuous stress changes monitoring in high seas as well as in nearly fully laden ship conditions.