TY - JOUR
T1 - Comparison of SIF solutions for cracks under rotating bending and their impact upon propagation lifetime of railway axles
AU - Pourheidar, Amir
AU - Beretta, Stefano
AU - Ragazzi, Daniele
AU - Baykara, Cemal
N1 - Publisher Copyright:
© 2018 Procedia Structural Integrity. All rights reserved.
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
UR - http://www.scopus.com/inward/record.url?scp=85064642144&partnerID=8YFLogxK
U2 - 10.1016/j.prostr.2017.12.060
DO - 10.1016/j.prostr.2017.12.060
M3 - Conference article
AN - SCOPUS:85064642144
SN - 2452-3216
VL - 8
SP - 610
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 -