Investigation of critical flaws in railway wheels

Edel, Karl-Otto

doi:10.1016/0167-8442(85)90014-x

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Critical Crack Size and Crack Growth Characterization1

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1988

2021

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Cited by 5 publications

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“…In general, the stress range Dr, the stress ratio R, and the geometry function G(a) depend on the crack size [12]. The crack growth from an initial size of a i to a service limit size of a f (critical crack size) is simulated by determination of relevant load cycles, N [14]. Residual cycles of rail life versus initial crack size are shown in Fig.…”

Section: Critical Crack Size and Crack Growth Characterizationmentioning

confidence: 99%

Fracture Mechanics Determinations of Allowable Crack Size in Railroad Rails

Hassani

2007

J Fail. Anal. and Preven.

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An evaluation of fatigue behavior of rail steel is necessary to ensure rail transportation safety. Fatigue in these steels was studied with fracture mechanics techniques. The goal of these studies was to find out the appropriate way of preventing a crack from reaching its critical size in the rail. Tests were conducted on rail head, and transverse head cracks were analyzed through damage tolerance concepts. Critical crack size and crack growth characteristics for the rail were determined, and the residual service life was calculated for defective segments of the rails. Additionally, the allowable crack size for different nondestructive testing intervals was determined.

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Section: Critical Crack Size and Crack Growth Characterizationmentioning

confidence: 99%