Tensile Strength of Adhesively Bonded Steel to Hybrid Sisal-Glass Reinforced HDPE Composite Joint for Automobile Side Body Panel Application

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Published Feb 15, 2026
https://doi.org/10.55043/jfpc.v5i1.394
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Vol. 5 No. 1 (2026): ARTICLES IN PRESS

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Samuel Tesfaye Molla
Bahir Dar University
Assefa Asmare Tsegaw
Bahir Dar University
Teshome Mulatie Bogale
Bahir Dar University
Addisu Negash Ali
Bahir Dar University
Asmamaw Tegegne Abebe
Federal Technical and Vocational Training Institute

Abstract

The increasing demand for lightweight, high-performance, and environmentally sustainable materials in the automotive industry has accelerated the adoption of adhesive bonding as an alternative to conventional joining techniques such as welding and mechanical fastening. Reliable prediction of stress distribution and debonding behavior in adhesively bonded composite–metal joints is therefore essential to ensure structural integrity under service loading. This study presents a comprehensive computational and experimental investigation of the tensile stress behavior of adhesively bonded single-side strap joints (ABSSSJ) formed between steel and hybrid sisal–glass reinforced high-density polyethylene (HDPE) composites for automobile side body panel applications. The hybrid composite adherend was modeled as an orthotropic laminate with a ([0°/+45°/90°/–45°/0°]) stacking sequence, while the adhesive layer was characterized using different epoxy systems (Araldite 2020, Araldite 2015, and AV138) with thicknesses ranging from 0.12 to 1.0 mm and elastic moduli between 1.85 and 6 GPa. An analytical variational method was employed to evaluate shear and peel stress distributions, and the results were verified using a cohesive zone model (CZM)-based finite element approach to simulate crack initiation and progressive debonding. Experimental tensile and shear tests were conducted to validate the numerical predictions. The results indicate that an adhesive thickness of approximately 0.75 mm provides an optimal balance between load transfer efficiency and stress reduction at the overlap edges. The numerical and analytical predictions exhibited strong agreement with experimental measurements, with a maximum deviation below 6%. The validated results demonstrate that hybrid sisal–glass reinforced HDPE composites, when combined with appropriate adhesive and joint design, offer a promising, lightweight, and sustainable solution for automotive side body panel structures.

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Author Biographies

Samuel Tesfaye Molla, Bahir Dar University

Department of Mechanical engineering, Faculty of Mechanical and Industrial Engineering,

Bahir Dar Institute of Technology

Assefa Asmare Tsegaw, Bahir Dar University

Department of Mechanical engineering, Faculty of Mechanical and Industrial Engineering,

Bahir Dar Institute of Technology

Teshome Mulatie Bogale, Bahir Dar University

Department of Mechanical engineering, Faculty of Mechanical and Industrial Engineering,

Bahir Dar Institute of Technology

Addisu Negash Ali, Bahir Dar University

Department of Mechanical engineering, Faculty of Mechanical and Industrial Engineering,

Bahir Dar Institute of Technology

Asmamaw Tegegne Abebe, Federal Technical and Vocational Training Institute

Department of Manufacturing Technology, Faculty of Mechanical Technology

How to Cite
Molla, S. T., Tsegaw, A. A., Bogale, T. M., Ali, A. N., & Abebe, A. T. (2026). Tensile Strength of Adhesively Bonded Steel to Hybrid Sisal-Glass Reinforced HDPE Composite Joint for Automobile Side Body Panel Application. Journal of Fibers and Polymer Composites, 5(1), 1–18. https://doi.org/10.55043/jfpc.v5i1.394

References

  1. Cavezza F, Boehm M, Terryn H, Hauffman T. A Review on Adhesive Bonded Aluminium Joints In the Automotive Industry. Journals of Metals 2020;10:730. https://doi.org/10.3390/met10060730.
  2. Monajati L, Vadean A, Boukhili R. Mechanical Behavior of Adhesively Bonded Joints Under Tensile Loading: A Synthetic Review of Configurations, Modeling, and Design Considerations. Journals of Materials 2025;18:3557. https://doi.org/10.3390/ma18153557.
  3. Arumugam S, Kandasamy J, Shah AUM, Sultan MTH, Safri SNA, Majid MSA. Investigations on the Mechanical Properties of Glass Fiber/Sisal Fiber/Chitosan Reinforced Hybrid Polymer Sandwich Composite Scaffolds for Bone Fracture Fixation Applications. Journals of Polymers 2020;12:1501. https://doi.org/10.3390/polym12071501.
  4. Seydibeyoğlu M Ö, Dogru A, Wang J, Rencheck M, Han Y, Wang L, et al. Review on Hybrid Reinforced Polymer Matrix Composites with Nano celluloe, Nano materials, and other Fibers. Journal of Polymers 2023;15:984. https://doi.org/10.3390/polym15040984.
  5. Luo B, Xue L, Wang Q, Zou P. Mechanical study of Failure in CFRP Hybrid Bonded –Bolted Interface Connection Structural under Tensile Loading. Journal of Materials Journals 2024;17. https://doi.org/10.3390/ma17092117.
  6. Rośkowicz M, Godzimirski J, Komorek A, Jasztal M. The Effect of Adhesive Layer Thickness on Joint Static Strenght. Journal of Materials Journals 2021;14:1499. https://doi.org/10.3390/ma14061499.
  7. Oshima S, Koyanagi J. Review on Damage and Failure in Adhesive Bonded Composite Joints: A Microscopic Aspects. Polymers (Basel) 2025;17. https://doi.org/10.3390/polym17030377.
  8. Ferdosian F, Pan, Gao G, Zhao B. Bio-based Adhesives and Evaluation for Wood Composites Application. Polymers (Basel) 2017;9:70. https://doi.org/10.3390/polym9020070.
  9. Maruri T, Ishikawa M, Takeda S, Konayagi J. Numerical Analysis on Optimal Adhesive Thickness in CFRP Single-lap Joints Considering Material Properties. Materials 2025;18:112–423. https://doi.org/10.3390/ma18112423.
  10. Slugocka M, Grochala D, Kwiatkowski K, Grzejda R, Zmarzly P. Study of the Impact of Surface Topography on Selected Mechanical Properties of Adhesive Joints. Journal of Coating 2024;14:944. https://doi.org/10.3390/coatings14080944.
  11. Rui L, Nasonov F, yu Z. Evaluations on VCCT and CZM methods of delamination propagation simulation for composite specimens. Journal of Aerospace Systems 2023;6:221. https://doi:1007/s42401-023-00231-8.
  12. Sun Z, Huang M, Lu X. A Cohesive Zone Model in Adhesive Bonding Joint Based on MSC.marc. Second international conference. IEEE 2011:1–4. https://doi.org/10.1109/ICDMA.2011.11.
  13. Hanumantharaya R, Premkumar BGP, Amitkumar M, Kumar MSV. Advances in Adhesive Bonded Joints for Composite Materials: A Comprehensive Review. Journal of Mines, Metals and Fuels 2023;71. https://doi.org/10.18311/jmmf/2023/45735.
  14. Molla ST, Tsegaw AA, Bogale TM, Ali AN, Abebe AT. Experimental Characterization and Numerical Simulation of Adhesively Bonded Hybrid Sisal- Glass Reinforced HDPE Composite for Automobile Side Body Panel Applications. Poly Journal of Engineering and Technology 2025;3:51–76. https://doi.org/10.20372/pjet.v3i2.2745.
  15. Bernardin P, Sedlacek F, Kozak J, Kucerova L, Lasova V. Identification of the Cohesive Parameters for Modeling of Bonded Joints between Flat Composite Adherends With Thick Layer of Adhesive. Materials 2024;17:4880. https://doi.org/10.3390/ma17194880.
  16. Neves LFR, Campilho RDSG, Sánchez-Arce IJ, Madani K, Prakash C. Numerical Modeling and Validation of Mixed-Mode Fracture Tests to Adhesive Joins Using J-Integral Concepts. Journal of Processes 2022;10:2730. https://doi.org/10.3390/pr10122730.
  17. Ketata N, Ejday M, Grohens Y, Seantier B, Guermazi N. Investigation of the hybridization effects on mechanical properties of natural fiber reinforced biosourced composites. Journal of Composite Materials 2024;58:1965–85. https://doi.org/10.1177/00219983241255751.
  18. Gupta AK, Zafar S, Pathak H. Mechanical durability of marine-grade glass fiber-reinforced polymer composites exposed to accelerated hygrothermal aging in seawater. Journal of Composite Materials 2025. https://doi.org/10.1177/00219983251391882.
  19. Hazimeh R, Challita G, Khalil K, Othman R. Finite element analysis of adhesively bonded composite joints subjected to impact loadings. International of Adhesion and Adhesives 2014;56:24–31 https://doi.org/10.1016/j.ijadhadh.2014.07.012.
  20. Tamilvendan D, Ravikumar AR, Munimathan AK, Ganesh M. Mechanical behavior of sisal glass-reinforced polymer composites under tensile loading and geometric irregularities. Journal of Process Mechanical Engineering 2024. https://doi.org/10.1177/09544089241270770.