FIELD: diagnosis of rail lengths of metal bridge.
SUBSTANCE: method involves continuously measuring longitudinal and transverse deformations of rail and rate of changing longitudinal and transverse deformations, said measurements being performed upon coming of train onto rail; starting acoustic signals receiving and detecting operations when rate of changing longitudinal deformation differs from zero, and ceasing said operations when rate of changing transverse deformation differs from zero; renewing acoustic signal receiving operation when rate of changing transverse deformation is equal to zero and ceasing said operation when rate of changing longitudinal deformation is equal to zero.
EFFECT: provision for obtaining of reliable control results and reduced volume of measurement information.
3 cl, 4 dwg
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