Tensile Behaviour of Steel Joints Implemented by Bolts and Adhesive

Abstract

Joints are the weakest points of given mechanical structures. Therefore, multiple joining methods are applied, and joints are dealt with special care to extend the life of the structures. Hybrid joints are seen to improve the performance of the joints significantly, especially for composite–metal joints. The hybrid joints, as well as non-hybrid lap joints made of bolts and adhesive to join steel plates, were investigated in this article. The role of the joining method (hybrid and non-hybrid) and parameters (bolt number and overlap length) in the mechanical strength of the mild steel grade 300 joints were analyzed under tensile loading. Based on the experimental results, it was observed that an increase in the number of fasteners (bolts) increased the tensile strength of the joint if the shear stress on the bolt held its strength. In addition, an increase in overlap distance slightly decreases the tensile strength of the assembly. The assembly with both fasteners and adhesive (hybrid joint) had higher yield strength than the assembly using only fasteners, and the ultimate tensile strength was approximately the same for both joining methods.

Received: 20 June 2024 | Revised: 10 February 2025 | Accepted: 28 February 2025

Conflicts of Interest

The authors declare that they have no conflicts of interest to this work.

Data Availability Statement

Data are available from the corresponding author upon reasonable request.

Author Contribution Statement

Alokesh Pramanik: Conceptualization, Formal analysis, Investigation, Resources, Writing - review & editing, Visualization, Supervision. Dinesh Garg: Methodology, Software, Formal analysis, Resources, Writing - original draft, Visualization. Animesh Kumar Basak: Conceptualization, Formal analysis, Resources, Data curation, Writing - original draft, Visualization, Supervision. Chander Prakash: Methodology, Validation, Investigation, Resources, Data curation, Writing - review & editing, Project administration. Subramaniam Shankar: Methodology, Validation, Investigation, Resources, Data curation, Writing - review & editing, Project administration. Subramaniam Shankar: Methodology, Validation, Investigation, Resources, Data curation, Writing - review & editing, Project administration.