2018
DOI: 10.22213/2410-9304-2018-2-78-83
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Strain Stress Modeling of Differential Hardening Rails

Abstract: Одной из наиболее часто встречающихся причин разрушения рельсов является высокое значение остаточных напряжений. В процессе производства рельсов остаточные напряжения могут возникать в процессе прокатки, термообработки, правки и рихтовки. В настоящее время приемо-сдаточные испытания включают в себя контроль по измерению расхождения паза рельса после прорезания шейки рельса на глубину 600 мм, а также измерение остаточных напряжений в подошве рельса до и после вырезки темплета с наклеенным тензодатчиком. В данно… Show more

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“…Given the uniformity of these properties, the velocity can be calculated quite accurately using dispersion curves. Inhomogeneity in the geometry and properties of the material [18][19] as well as defects lead to an additional change in the propagation velocity of guided waves. As such an inhomogeneity, the cylindrical surface of a hollow cylinder can be considered as a special case of a plate with a curved surface, and the phenomenon of a change in velocity on geometric inhomogeneities is called geometric dispersion.…”
Section: Introductionmentioning
confidence: 99%
“…Given the uniformity of these properties, the velocity can be calculated quite accurately using dispersion curves. Inhomogeneity in the geometry and properties of the material [18][19] as well as defects lead to an additional change in the propagation velocity of guided waves. As such an inhomogeneity, the cylindrical surface of a hollow cylinder can be considered as a special case of a plate with a curved surface, and the phenomenon of a change in velocity on geometric inhomogeneities is called geometric dispersion.…”
Section: Introductionmentioning
confidence: 99%