MONITORING OF THE STRESS FREE TEMPERATURE IN RAILS USING THE ACOUSTOELASTIC EFFECT Conference Paper uri icon

abstract

  • This research develops a non-destructive procedure for monitoring the stress free temperature in rails using the acoustoelastic effect of ultrasonic waves. Acoustoelasticity is the stress dependency of ultrasonic wave speed or polarization. Analytical models are developed to compare the acoustoelastic effect for longitudinal, shear, and Rayleigh waves. Rayleigh waves are found to be most sensitive to stress change. Rayleigh waves are generated using a transducer and detected using a laser Doppler vibrometer (LDV). Furthermore, the polarization of Rayleigh wave is considered as a measure to identify applied stress. © 2008 American Institute of Physics.

author list (cited authors)

  • Gokhale, S., & Hurlebaus, S.

publication date

  • January 1, 2008 11:11 AM

publisher

  • AIP  Publisher