The Open Construction & Building Technology Journal

ISSN: ― Volume ,

High-cycle Fatigue Behaviour of S460N Steel Grade Materials and Bolted Joints Processed by Laser Cutting

Gabriele Zanon1, *, Oreste S. Bursi1, Paolo Scardi1, Mirco D’Incau1, Sergio Raso2
1 Department of Civil, Environmental and Mechanical Engineering, University of Trento, Trento, Italy
2 Adige-Sys BLM Group, Trento, Italy



Prompted by the EN 1090 standard, an important evolution has been observed in recent years about steel structures execution. Laser cutting is appealing for high machining speed and precision in implementation of details with complex geometry, but requires consideration for the effects of the inherent thermal process.


The present study investigates the correlations between material properties altered by the laser cutting process and behaviour of the material and of structural joints subjected to high-cycle fatigue.


High-cycle fatigue tests on material samples and on structural bolted connections were carried out in order to correlate the structural response with material properties. For this purpose, hardness and residual stresses were analysed in depth, from the cutting surface inward and specimens processed using different laser cutting parameters and post-annealing treatments were investigated.


High-cycle fatigue tests on material samples and on structural bolted connections, processed by laser cutting, show a favourable fatigue behaviour of S460N steel, despite the high values of hardness on cut surface, in agreement with Eurocode 3 fatigue category FAT160 and FAT90, respectively for base material and drilled holes.


Structural bolted connections made of S460N steel cut by laser exhibit a favourable fatigue behaviour. Local hardness is an important indicator, favourably complemented by the residual stress distribution to understand the effects of laser cutting and correlate them with the high-cycle fatigue behaviour.

Keywords: Laser thermal cutting, EN 1090, Eurocode 3 FAT class, microstructure, Hardness, Residual stresses, Bolted connection, Laser cutting parameters.

Article Information

Identifiers and Pagination:

Year: 2018
Volume: 12
Issue: Suppl-1, M2
First Page: 83
Last Page: 89
Publisher Id: TOBCTJ-12-83
DOI: 10.2174/1874836801812010083

Article History:

Received Date: 01/10/2017
Revision Received Date: 01/11/2017
Acceptance Date: 01/12/2017
Electronic publication date: 23/05/2018
Collection year: 2018

© 2018 Zanon et al.

open-access license: This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International Public License (CC-BY 4.0), a copy of which is available at: This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

* Address correspondence to this author at the Department of Civil, Environmental and Mechanical Engineering, University of Trento, Gabriele Zanon, Trento, Italy; Tel: +390461282568; E-mail:

Track Your Manuscript:


"We greatly appreciate the efficient, professional and rapid processing of our paper by your team. The editors are so kind and professional to send us the reviewers' feedback in time. Those comments were all valuable and very helpful for us in revising and improving our paper."

Hailong Zhao
School of Civil Engineering,
Tianjin University, Tianjin,

Browse Contents

Webmaster Contact:
Copyright © 2021 Bentham Open