Measurement of nonlinear elastic constants of rail steel
2012
The paper presents a method for investigating the stress-induced changes in ultrasonic wave speeds at room temperature
in rail steel. The pulse echo method is used to measure the wave speed accurately. All of the second-order and thirdorder
elastic constants are calculated from the measured acoustoelastic data. A comparison of the strain-induced elastic
constant at room temperature is also conducted with previous measurement results.
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