Fatigue life prediction of butt weld joint with weld defects at multiple locations

Gnanasigamony Thankareathenam, Ebron Shaji (author), Venugopal, Prabhu Raja (author), Velayudhan, Gautham (author), Selvakumar, Mohanraj (author)

A numerical model developed using finite element software is used to determine the fatigue life of an arc-welded butt joint with weld defects: lack of penetration, lack of fusion, and undercut, which occur predominantly in welded structures. High-strength, tempered, and quenched fine grain ASTM A517 grade F structural steel, widely used in welded structures, is selected as the base material. The finite element analysis approach adopted in the present work is validated using the experimental and analytical results by performing a benchmark study. The validated numerical approach is then used to generate datasets for developing an empirical model for predicting the fatigue life of a butt joint with defects, modelled as cracks at specific locations, subjected to bending and/or membrane stresses. An experimental investigation was undertaken to validate the empirical model. The influencing parameters are ranked based on their severity on the fatigue life of butt joint.

• Language: English
• Keywords: butt joint, weld defects, fatigue loading, fatigue life
• Work type: Article
• Typology: 1.01 - Original Scientific Article
• Organization: FS - Faculty of Mechanical Engineering
• Publication status: Published
• Publication version: Version of Record
• Publication date: 01.01.2022
• Year: 2022
• Number of pages: Str. 350-358
• Numbering: Vol. 68, no. 5
• PID: 20.500.12556/RUL-137286
• UDC: 539.422.24
• ISSN on article: 0039-2480
• DOI: 10.5545/sv-jme.2021.7536
• COBISS.SI-ID: 111038211
• Publication date in RUL: 09.06.2022

Record is a part of a journal

• Title: Strojniški vestnik
• Shortened title: Stroj. vestn.
• Publisher: Zveza strojnih inženirjev in tehnikov Slovenije [etc.], = Association of Mechanical Engineers and Technicians of Slovenia [etc.
• ISSN: 0039-2480
• COBISS.SI-ID: 762116

Licences

• License: CC BY 4.0, Creative Commons Attribution 4.0 International
• Link: http://creativecommons.org/licenses/by/4.0/
• Description: This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.
• Licensing start date: 24.02.2022

Secondary language

• Language: Slovenian
• Title: Napovedovanje časovne trdnosti sočelnih zvarov z napakami na več mestih
• Keywords: sočelni spoji, napake v zvarih, rast razpok, utrujenostne obremenitve, časovna trdnost