Open AccessDiagnostics of tension in long rods with the help of traveling bending waves
Author(s) -
V. M. Bardakov,
Nikolai N. Klimov,
А. А. Ермаков,
D. Yu Pomerantsev
Publication year - 2021
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/1151/1/012014
Subject(s) - bending , tension (geology) , mechanics , dispersion (optics) , rod , stress (linguistics) , bending stiffness , materials science , acoustics , structural engineering , compression (physics) , optics , physics , engineering , composite material , medicine , linguistics , philosophy , alternative medicine , pathology
The article considers the possibility of measuring the tension of long thin structures by measuring the speed of traveling bending waves. Earlier, with the participation of the first two authors of the work, a theoretical consideration of the possibility of determining the stress of a continuous-welded railway track by measuring the velocity of bending waves was carried out. For verification, the velocity of propagation of bending waves was measured, presumably during the compression of a continuous-welded track. This is possible when the temperature of the rails is higher than the laying temperature of the continuous track. In the same consideration, it is taken into account that bending waves exist in an extended product of finite thickness without tension, and the results are presented for the case when the continuous track is in a tensioned state. This consideration takes into account the fact that in a long workpiece of finite thickness there are also bending waves without tension. These waves, unlike the dispersion-free waves of tension, possess dispersion. A method of measuring the speed of these waves is proposed.