BENDING WA VES AS A METHOD FOR DIAGNOSTICS OF TENSION OF LONG RODS
The article discusses the possibility of measuring the tension of long thin structures by measuring the speed of traveling flexural waves. Earlier, with the participation of the first two authors of the work, a theoretical consideration of the possibility of determining the stresses of a continuous-welded railway track by measuring the velocity of flexural waves was carried out. For verification, measurements of the velocity of propagation of flexural waves were carried out, presumably during compression of a continuous welded track. This is possible when the temperature of the rails is higher than the temperature of laying a solid track. In the same consideration, it is taken into account that flexural waves exist in an extended product of finite thickness without tension, and the results are given for the case when a continuous path is in a stressed state. This consideration takes into account the fact that tension-free bending waves also exist in a long product of finite thickness. These waves, in contrast to dispersion-free stress waves, have dispersion. A method for measuring the speed of these waves is proposed.