Growth of fatigue cracks in specimens welded under bending with torsion
Dariusz Rozumek, Janusz Lewandowskidownload PDF
Abstract. The paper presents the results of crack development in specimens welded from S355 steel under bending and torsional loading. Welded joints, as a method of inseparable joining of technical structures, are commonly used in many areas of human activity. The aim of the study was to analyse the influence of the shape of concave and convex fillet joints on the development of fatigue cracks. The experimental tests (fatigue tests) were performed with the use of the fatigue machine MZGS-100, at a constant amplitude of the moment Ma = 9.20 N·m, and the stress ratio R = – 1 with a load frequency of 28.4 Hz.
Welding, Bending with Torsion, Fatigue Crack Growth, Hardness, Microstructure, Fillet Welds
Published online , 7 pages
Copyright © 2023 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA
Citation: Dariusz Rozumek, Janusz Lewandowski, Growth of fatigue cracks in specimens welded under bending with torsion, Materials Research Proceedings, Vol. 30, pp 68-74, 2023
The article was published as article 10 of the book Experimental Mechanics
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 A. Carpinteri, C. Ronchei, D. Scorza, S. Vantadori, Fracture mechanics based approach to fatigue analysis of welded joints, Eng. Fail. Anal. 49 (2015) 67–78, https://doi.org/10.1016/j.engfailanal.2014.12.021.
 P.W. Marshall, Design of welded tubular connections. Basis and use of AWS code provisions, Elsevier, 1992.
 D. Rozumek, J. Lewandowski, G. Lesiuk, Z. Marciniak, J.A. Correia, W. Macek, The energy approach to fatigue crack growth of S355 steel welded specimens subjected to bending, Theoretical and Applied Fracture Mechanics, Vol 121 (2022), https://doi.org/10.1016/j.tafmec.2022.103470
 Z.-G. Xiao, T. Chen, X.-L. Zhao, Fatigue strength evaluation of transverse fillet welded joints subjected to bending loads, Int. J. Fatigue 38 (2012) 57–64, https:// doi.org/10.1016/j.ijfatigue.2011.11.013.
 D. Rozumek, J. Lewandowski, G. Lesiuk, J. Correia, The influence of heat treatment on the behavior of fatigue crack growth in welded joints made of S355 under bending loading, Int. J. Fatigue 131 (2020), https://doi.org/10.1016/j. ijfatigue.2019.105328.
 M.A. Wahab, M.S. Alam, The significance of weld imperfections and surface peening on fatigue crack propagation life of butt-welded joints, J. Mater. Process. Technol. 153–154 (2004) 931–937, https://doi.org/10.1016/j. jmatprotec.2004.04.150
 Z. Jie, K. Wang, S. Liang, Residual stress influence on fatigue crack propagation of CFRP strengthened welded joints, Journal of Constructional Steel Research 196 (2022), https://doi.org/10.1016/j.jcsr.2022.107443
 D. Rozumek, S. Faszynka, Surface cracks growth in aluminum alloy AW-2017A-T4 under combined loadings. Eng. Fracture Mechanics 226 (2020) 106896, https://doi.org/10.1016/j.engfracmech.2020.106896.
 J. Lewandowski, D. Rozumek, Fatigue crack growth in welded S355 samples subjected to bending loading. Metals 11(9) (2021) 1394, https://doi.org/10.3390/met11091394.
 A. Thum, C. Petersen, O. Swenson, Verformung, Spannung und Kerbwirkung; VDI: Düesseldorf, Germany, 1960.
 M. Somer, Effect of Heat Treatment on Fatigue Behavior of (A193-51T-B7) Alloy Steel, Proceedings of the World Congress on Engineering 2007 Vol. II, London, U.K.
 Rafiq A. Siddiqui, Sayyad Z. Qamar, Tasneem Pervez, Sabah A. Abdul-Wahab, Effect of heat treatment and surface finish on fatigue fracture characteristics in 0.45% carbon steel, 10th International Research, Trends in the Development of machinery and Associated Technology, TMT 2006, Barcelona-Lloret de Mar, Spain.