FEATURES OF CAVITATION AND CAVITATION EROSION OF WAVEGUIDES 
OF POWERFUL ULTRASONIC UNITS AT HIGHER-THAN-AVERAGE
PRESSURE OF THE MEDIA

B. I. Bakhtin, A. V. Desyatov,
A. P. Kubyshkin, and A. S. Skorokhodov

UDC 534.2 and 532.528

The features of the acoustic effects of cavitation created 
by the rod waveguides of powerful ultrasonic magnetostriction units 
in different liquid media at a pressure to 5 MPa have been investigated. 
It has been established that, under the conditions of maximum acoustical 
activity of cavitation realized at the medium's higher-than-average 
pressure, the erosion damage to the waveguides is of an unusual structurized 
character and develops from the central part of the end to its periphery. 
A result of the erosion damage may be the total loss of operating 
capacity by the waveguides manufactured from the most erosion-resistant 
materials (stainless steel and titanium alloys) even after a few hours 
of tests.

M. V. Keldysh Research Center, 8 Ulitsa Onezhskaya, Moscow, 
125438, Russia; email: ventur2005@yandex.ru. Translated 
from Inzhenerno-Fizicheskii Zhurnal, Vol. 81, No. 4, pp. 690-696, 
July-August, 2008. Original article submitted July 30, 2007.