Numerical and Experimental Study on Measuring Method of Rail Axial Stress of Continuous Welded Rails Based on Use of Resonant Frequency

This paper proposes a newly developed method, which measures absolute axial stress of continuous welded rails (CWR), based on the change of resonant frequency of standing wave mode of rails in the periodic infinite railway track structure. First, the authors theoretically derived dominant simultaneous equations regarding the vibration motions of...