Evaluation of Fatigue Resistance of Laser Welded High Pressure Vessels Steel P355 Considering Fracture Mechanics Approach

Ivo Černý; Jan Kec

doi:10.4028/www.scientific.net/KEM.827.428

Paper Titles

Fatigue Crack Propagation under Mixed Mode I and III in Polyoxymethelene Homopolymer
p.404

A Comparative Study of Impact Localisation in Composite Structures Using Neural Networks under Environmental and Operational Variations
p.410

Analysis of 3-Dimensional Creased Cracks
p.416

Rupture and Damage at Dilatant Geological Interfaces
p.422

Evaluation of Fatigue Resistance of Laser Welded High Pressure Vessels Steel P355 Considering Fracture Mechanics Approach
p.428

Thermoelastic Rolling Contact Problem of an FGM Layered Elastic Solid
p.434

Dynamic Fracture Analysis of Plates Loaded in Tension and Bending Using the Dual Boundary Element Method
p.440

Effect of Resin Layer Thickness on Mode II Delamination Growth Property of CFRTP Laminates under Static Loadings
p.446

Electromagnetic Shielding for Buildings Using Hybrid Polymer Composites: A Life Cycle Assessment Study
p.452

HomeKey Engineering MaterialsKey Engineering Materials Vol. 827Evaluation of Fatigue Resistance of Laser Welded...

Evaluation of Fatigue Resistance of Laser Welded High Pressure Vessels Steel P355 Considering Fracture Mechanics Approach

Abstract:

Laser welding is an innovative technology of joining metallic materials. In comparison with conventional arc welding, it has numerous advantages, like high energy of laser beam and high effectiveness, very good reproducibility, possibilities of automation, low energy consumption etc. High pressure vessels and high pressure pipeline industry represent perspective new fields of application. However, since pressure vessels and pipelines are usually operated at conditions of repeated or cyclic loading, an acceptable resistance to fatigue loading of the welds has to be demonstrated. In this contribution, results of an experimental programme aimed at an evaluation of high-cycle fatigue resistance in and near laser welds of a P355 pressure vessel steel are presented and discussed. Particular attention is paid to evaluation of crack initiation mechanisms in connection to laser weld character and welding imperfections. The programme is completed by measurement of fatigue crack growth rates and threshold values in the weld. Results of high-cycle fatigue tests of some groups of specimens were characteristic by a considerable scatter. The reason of the scatter was found in welding defects in some parts of the welds. Fatigue results are discussed also from the viewpoint of fracture mechanics and threshold values of fatigue crack growth.

You might also be interested in these eBooks

Advances in Fracture and Damage Mechanics XVIII

View Preview

Info:

Periodical:

Key Engineering Materials (Volume 827)

Pages:

428-433

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.827.428

Citation:

Cite this paper

Online since:

December 2019

Authors:

Ivo Černý*, Jan Kec

Keywords:

Fracture Mechanics, High-Cycle Fatigue, Laser Welds, Pressure Vessel Steel P355

Export:

RIS, BibTeX

Price:

Permissions:

Request Permissions

* - Corresponding Author

References

[1] A. Kochank: Assembly Automation Vol. 17, 4 (1997), pp.287-290.

Google Scholar

[2] B. Weston: Technology considerations for laser welding tubes and pipes. The Tube & Pipe Journal, March 2014 (2014).

Google Scholar

[3] J. Oñoro and C. Ranninger: J. Mater. Process. Tech. Vol. 68, 1 (1997), p.68–70.

Google Scholar

[4] S. Němeček, D. Zikmund, I. Černý and N. Ganev: Procedia CIRP Vol. 74 (2018),pp.481-484.

DOI: 10.1016/j.procir.2018.08.142

Google Scholar

[5] C. M. Allen: Australasian Welding Journal Vol. 52, 4th quarter 2007 (2007), pp.21-22.

Google Scholar

[6] S. Grünenwald, T. Seefeld, F. Vollertsen and M. Kocak: Physics Procedia 5 (2010) p.77–87.

DOI: 10.1016/j.phpro.2010.08.032

Google Scholar

[7] H. Tada, P.C. Paris and G.R. Irwin: The Stress Analysis of Cracks Handbook (ASME Digital Collection, Third Edition, USA 2000).

Google Scholar

[8] K. Kolařík, N. Ganev, K. Trojan, J. Sís and S. Němeček: Effect of shielding gas on residual stresses and mechanical properties of laser welding of S355 steel, in: Proceedings of EAN 2016 - 54th International Conference on Experimental Stress Analysis (2016).

DOI: 10.2351/1.5063047

Google Scholar