Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : November 27, 2024 - November 29, 2024
The application of ultrasonic acoustoelasticity for the safety assessment of tread-braked railway wheels subjected to malfunction drag braking was investigated. Ultrasonic residual stress measurements were found to be potentially more effective for detecting wheel anomalies compared to conventional techniques, such as strain gauges and X-ray diffraction. It was observed that the acoustic anisotropy of wheel cut pieces did not match the values reported in the literature, making direct, non-destructive stress measurement in specific wheels challenging. Therefore, a comparative assessment method was proposed, in which the measured stress values are compared to those from wheels of the same type and diameter, without abnormal loading histories.
