PSI - Issue 77

ScienceDirect Structural Integrity Procedia 00 (2026) 000–000 Structural Integrity Procedia 00 (2026) 000–000 Available online at www.sciencedirect.com Available online at www.sciencedirect.com ScienceDirect Available online at www.sciencedirect.com ScienceDirect

www.elsevier.com/locate/procedia www.elsevier.com/locate/procedia

Procedia Structural Integrity 77 (2026) 95–102

© 2026 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of ICSI organizers Abstract Adhesive joints are widely employed due to their advantages over traditional joining methods such as welding and bolting. Among different configurations, overlap tubular adhesive joints are formed by inserting a smaller-diameter tube into a larger one, which are bonded to provide a solution with attractive strength-to-weight ratio, stress distribution, and corrosion resistance. This study numerically evaluates the performance of overlap tubular joints by comparing three adherend materials and analyzing the effect of overlap length ( L O ). A numerical approach based on Cohesive Zone Models (CZM) was used and initially validated against experimental data. The results demonstrated that both the adherend and adhesive stiffness significantly impact joint strength. The highest tensile strength was observed in joints using DIN 55Si7 steel adherends bonded with the Araldite ® AV138 adhesive . © 2026 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of ICSI organizers Keywords: Tubular adhesive joints; Cohesive Zone Models; Strength prediction; Damage analysis; Energy. 1. Introduction Tubular adhesive joints are widely used in industries requiring high-performance tubular constructions, such as in the oil and gas sector for pipeline bonding, in energy production for turbine assemblies, and in lightweight aerospace and automotive frames (Damm et al. 2023). Their ability to join fiber-reinforced polymer (FRP) tubes further enlarges their applications due to reducing stress concentrations and preventing premature delamination (de Miguel et al. 2020). Abstract Adhesive joints are widely employed due to their advantages over traditional joining methods such as welding and bolting. Among different configurations, overlap tubular adhesive joints are formed by inserting a smaller-diameter tube into a larger one, which are bonded to provide a solution with attractive strength-to-weight ratio, stress distribution, and corrosion resistance. This study numerically evaluates the performance of overlap tubular joints by comparing three adherend materials and analyzing the effect of overlap length ( L O ). A numerical approach based on Cohesive Zone Models (CZM) was used and initially validated against experimental data. The results demonstrated that both the adherend and adhesive stiffness significantly impact joint strength. The highest tensile strength was observed in joints using DIN 55Si7 steel adherends bonded with the Araldite ® AV138 adhesive . © 2026 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of ICSI organizers Keywords: Tubular adhesive joints; Cohesive Zone Models; Strength prediction; Damage analysis; Energy. 1. Introduction Tubular adhesive joints are widely used in industries requiring high-performance tubular constructions, such as in the oil and gas sector for pipeline bonding, in energy production for turbine assemblies, and in lightweight aerospace and automotive frames (Damm et al. 2023). Their ability to join fiber-reinforced polymer (FRP) tubes further enlarges their applications due to reducing stress concentrations and preventing premature delamination (de Miguel et al. 2020). International Conference on Structural Integrity Energetic evaluation of tubular adhesive joints: adherend material effect C.F.F. Gomes a , R.D.S.G. Campilho a,b *, A.J.A. Vieira a , D.C. Gonçalves a , K. Madani c a CIDEM, ISEP-School of Engineering, Polytechnic of Porto, R. Dr. António Bernardino de Almeida, 431, 4200-072 Porto, Portugal. b INEGI-Pólo FEUP, Rua Dr. Roberto Frias, 400, 4200-465 Porto, Portugal. c Department of Mechanical Engineering, University of Sidi Bel Abbes, BP 89, Cité Ben M’hidi, 22000, Sidi Bel Abbes, Algeria. International Conference on Structural Integrity Energetic evaluation of tubular adhesive joints: adherend material effect C.F.F. Gomes a , R.D.S.G. Campilho a,b *, A.J.A. Vieira a , D.C. Gonçalves a , K. Madani c a CIDEM, ISEP-School of Engineering, Polytechnic of Porto, R. Dr. António Bernardino de Almeida, 431, 4200-072 Porto, Portugal. b INEGI-Pólo FEUP, Rua Dr. Roberto Frias, 400, 4200-465 Porto, Portugal. c Department of Mechanical Engineering, University of Sidi Bel Abbes, BP 89, Cité Ben M’hidi, 22000, Sidi Bel Abbes, Algeria.

* Corresponding author. Phone:+351939526892; Fax:+351228321159. E-mail address: raulcampilho@gmail.com * Corresponding author. Phone:+351939526892; Fax:+351228321159. E-mail address: raulcampilho@gmail.com

2452-3216 © 2026 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of ICSI organizers 2452-3216 © 2026 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of ICSI organizers

2452-3216 © 2026 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of ICSI organizers 10.1016/j.prostr.2026.01.014