Krasimir Staykov, Damyan Ganchev
Application of guided waves for rail inspection in the railroad industry is considered in the paper. They are particularly sensitive to vertical defects and they are used at relatively low frequency so they are not significantly attenuated by weld material. Dispersion curves and mode shapes for guided waves in rails were calculated using finite element technique. For the experiments a mode that only propagates in the web of the rail at frequency less than 100 kHz was chosen. Novel transducers were designed which produce in-plane displacements. For damping of the transducers a specially designed backing material composite was used in order to reduce the ringing effect of the piezo element at low frequencies. Experiments were conducted using a single transducer and array of four transducers. Different materials were evaluated for dry-coupling of the transducers to the rail surface. The experimental prototype system enables the screening of 20 meters of rail from a single array position.
@article{4caa12da-b2b2-49db-8181-53f5459bfb43,
title={Long Range Ultrasonic Technique for Rail Inspection},
author={Krasimir Staykov and Damyan Ganchev},
year={2006},
language={en}
}TY - JOUR TI - Long Range Ultrasonic Technique for Rail Inspection AU - Krasimir Staykov AU - Damyan Ganchev PY - 2006 LA - en ER -
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