Abstract:This paper proposes an approach to identify the equivalent rotational stiffness of rail cracks based on the reflection of guided waves. The identified rotational stiffness can be adopted to detect the crack and evaluate the safety of the rail. The quasi-bending guided waves propagating in the rail head and web are found and chosen as the detecting guided waves. Considering these guided waves, the relationship between the dynamic parameters of cracks and the power reflection coefficients are deduced theoretical… Show more
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