<abstract xmlns="http://www.w3.org/1999/xhtml"><p>Welded joints are areas of increased stresses in construction. The reason for this phenomenon is associated with the nonhomogeneous mechanical, structural and geometrical properties of the weld. In the article the correlations between locally raised stresses due to real geometry and fatigue lives of non-load carrying cruciform joints made from S355J2+N steel are analysed. Stresses were computed using Finite Element Method (FEM) based on real three-dimensional weld geometry obtained by 3D scanning. The specimens were experimentally tested under cyclic push-pull loading with a zero mean value of applied force. The correlation was analysed using Pearson’s correlation coefficient and statistical hypotheses. It was shown that statistically significant correlation exists between maximum values of normal stresses and fatigue lives.</p></abstract>

Welded joints are areas of increased stresses in construction. The reason for this phenomenon is associated with the nonhomogeneous mechanical, structural and geometrical properties of the weld. In the article the correlations between locally raised stresses due to real geometry and fatigue lives of non-load carrying cruciform joints made from S355J2+N steel are analysed. Stresses were computed using Finite Element Method (FEM) based on real three-dimensional weld geometry obtained by 3D scanning. The specimens were experimentally tested under cyclic push-pull loading with a zero mean value of applied force. The correlation was analysed using Pearson’s correlation coefficient and statistical hypotheses. It was shown that statistically significant correlation exists between maximum values of normal stresses and fatigue lives.

Analysis of Correlation between Stresses and Fatigue Lives of Welded Steel Specimens Based on Real Three-Dimensional Weld Geometry

Formopex Sp. z o.o., ul. Braci Prankel 1, 47-100 Strzelce Opolskie, Poland

Faculty of Mechanical Engineering, Department of Mechanics and Machine Design, Opole University of Technology, ul. Prószkowska 76, 45-758 Opole, Poland

Chair of Management and Production Engineering, Department of Mechanical Engineering and Management, Poznan University of Technology, Pl. M. Skłodowskiej-Curie 5, 60-965 Poznań, Poland

Acta Mechanica et Automatica

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Welded joints are areas of increased stresses in construction. The reason for this phenomenon is associated with the nonhomogeneous mechanical, structural and...

Analysis of Correlation between Stresses and Fatigue Lives of Welded Steel Specimens Based on Real Three-Dimensional Weld Geometry

Publié en ligne: 07 mars 2016

Pages: 12 - 16

Reçu: 04 mai 2015

Accepté: 22 déc. 2015

DOI: https://doi.org/10.1515/ama-2016-0002

Mots clés
3D Topography of Weld Joint, Non-Load Carrying Cruciform Joints, FEM Analysis, Correlation Analysis

© 2016 Bialystok University of Technology

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Analysis of Correlation between Stresses and Fatigue Lives of Welded Steel Specimens Based on Real Three-Dimensional Weld Geometry

Publié en ligne: 07 mars 2016

Pages: 12 - 16

Reçu: 04 mai 2015

Accepté: 22 déc. 2015

DOI: https://doi.org/10.1515/ama-2016-0002

Mots clés3D Topography of Weld Joint, Non-Load Carrying Cruciform Joints, FEM Analysis, Correlation Analysis

© 2016 Bialystok University of Technology

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Mots clés
3D Topography of Weld Joint, Non-Load Carrying Cruciform Joints, FEM Analysis, Correlation Analysis