Comparison of SIF solutions for cracks under rotating bending and their impact upon propagation lifetime of railway axles

Amir Pourheidar; Stefano Beretta; Daniele Ragazzi; Cemal Baykara

doi:10.1016/j.prostr.2017.12.060

Comparison of SIF solutions for cracks under rotating bending and their impact upon propagation lifetime of railway axles

Amir Pourheidar, Stefano Beretta^*, Daniele Ragazzi, Cemal Baykara

^*Corresponding author for this work

Department of Mechanical Engineering

Research output: Contribution to journal › Conference article › peer-review

5 Citations (Scopus)

Abstract

The stress intensity factor (SIF) is a crucial input parameter for the definition of the inspection intervals based on the damage tolerance approach. In the present work the applicability and precision of existing analytical stress intensity factor solutions for the cracks in railway axle geometries, subjected to rotary bending and residual stresses is discussed, by comparison with a reference set of solutions obtained from finite element (FE) analyses. Both the SIFs and the crack shape evolution are considered, comparing the predicted crack shape growth, from FE and analytical solutions, with a series of experimental data from the literature. Finally, the effect of the different approximations for the propagation lifetime and non-destructive tests (NDT) reliability of railway axles is discussed.

Original language	English
Pages (from-to)	610-617
Number of pages	8
Journal	Procedia Structural Integrity
Volume	8
DOIs	https://doi.org/10.1016/j.prostr.2017.12.060
Publication status	Published - 2018
Event	46th Conference on Stress Analysis and Mechanical Engineering Design, AIAS 2017 - Pisa, Italy Duration: 6 Sept 2017 → 9 Sept 2017

Bibliographical note

Publisher Copyright:
© 2018 Procedia Structural Integrity. All rights reserved.

Keywords

railway axles
residual lifetime
residual stresses
stress intensity factor comparison

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10.1016/j.prostr.2017.12.060

Cite this

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title = "Comparison of SIF solutions for cracks under rotating bending and their impact upon propagation lifetime of railway axles",

abstract = "The stress intensity factor (SIF) is a crucial input parameter for the definition of the inspection intervals based on the damage tolerance approach. In the present work the applicability and precision of existing analytical stress intensity factor solutions for the cracks in railway axle geometries, subjected to rotary bending and residual stresses is discussed, by comparison with a reference set of solutions obtained from finite element (FE) analyses. Both the SIFs and the crack shape evolution are considered, comparing the predicted crack shape growth, from FE and analytical solutions, with a series of experimental data from the literature. Finally, the effect of the different approximations for the propagation lifetime and non-destructive tests (NDT) reliability of railway axles is discussed.",

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AU - Pourheidar, Amir

AU - Beretta, Stefano

AU - Ragazzi, Daniele

AU - Baykara, Cemal

PY - 2018

Y1 - 2018

N2 - The stress intensity factor (SIF) is a crucial input parameter for the definition of the inspection intervals based on the damage tolerance approach. In the present work the applicability and precision of existing analytical stress intensity factor solutions for the cracks in railway axle geometries, subjected to rotary bending and residual stresses is discussed, by comparison with a reference set of solutions obtained from finite element (FE) analyses. Both the SIFs and the crack shape evolution are considered, comparing the predicted crack shape growth, from FE and analytical solutions, with a series of experimental data from the literature. Finally, the effect of the different approximations for the propagation lifetime and non-destructive tests (NDT) reliability of railway axles is discussed.

AB - The stress intensity factor (SIF) is a crucial input parameter for the definition of the inspection intervals based on the damage tolerance approach. In the present work the applicability and precision of existing analytical stress intensity factor solutions for the cracks in railway axle geometries, subjected to rotary bending and residual stresses is discussed, by comparison with a reference set of solutions obtained from finite element (FE) analyses. Both the SIFs and the crack shape evolution are considered, comparing the predicted crack shape growth, from FE and analytical solutions, with a series of experimental data from the literature. Finally, the effect of the different approximations for the propagation lifetime and non-destructive tests (NDT) reliability of railway axles is discussed.

KW - railway axles

KW - residual lifetime

KW - residual stresses

KW - stress intensity factor comparison

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DO - 10.1016/j.prostr.2017.12.060

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AN - SCOPUS:85064642144

SN - 2452-3216

VL - 8

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EP - 617

JO - Procedia Structural Integrity

JF - Procedia Structural Integrity

T2 - 46th Conference on Stress Analysis and Mechanical Engineering Design, AIAS 2017

Y2 - 6 September 2017 through 9 September 2017

ER -

Comparison of SIF solutions for cracks under rotating bending and their impact upon propagation lifetime of railway axles

Abstract

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Keywords

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