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Journal of Failure Analysis and Prevention

, Volume 19, Issue 4, pp 950–957 | Cite as

Failure Mode and Failure Load of Adhesively Bonded Composite Joints Made by Glass Fiber-Reinforced Polymer

  • Moataz H. Ata
  • Mohamed Abu-OkailEmail author
  • Ghada M. F. Essa
  • T. S. Mahmoud
  • Ibrahim Hassab–Allah
Technical Article---Peer-Reviewed
  • 191 Downloads

Abstract

Failure mode and failure load of composite joint design has become a very vital research area for being a weak part of composite structures in aircraft segments. So the objective of this study is to investigate the effect of different parameters on the shear strength and failure mode of adhesively bonded single-lap and scarf joints. The parameters included the overlap length, adherend thickness, and adhesive thickness of single-lap joints, and also the effect of single and double scarf angles of scarf joints. The results showed that in single-lap joints, the increasing overlap length led to increase shear strength until the length-to-width ratio becomes same value. The final failure mode of most tested thin adherends bonded joints with similar specimens was the delamination, while the interfacial failure mode occurred in thick adherends bonded joints. The shear strength increased when the adhesive thickness was reduced. On the other hand, in scarf joints, the ultimate shear strength was obtained when the scarf angle was around θ = 18°, while when scarf angle reached θ = 75°, the shear strength was decreased. The failure mode of scarf joints occurred at the interfaces between the scarf angles.

Keywords

Failure mode Failure load Joint design Adhesive joints 

Notes

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Copyright information

© ASM International 2019

Authors and Affiliations

  • Moataz H. Ata
    • 1
  • Mohamed Abu-Okail
    • 1
    Email author
  • Ghada M. F. Essa
    • 2
  • T. S. Mahmoud
    • 3
  • Ibrahim Hassab–Allah
    • 4
  1. 1.Mechanical Department, Faculty of Industrial EducationSohag UniversitySohagEgypt
  2. 2.Housing and Building National Research CenterCairoEgypt
  3. 3.Mechanical Engineering Department, Faculty of Engineering at ShoubraBenha UniversityBenhaEgypt
  4. 4.Mechanical Engineering Department, Faculty of EngineeringAssiut UniversityAssiutEgypt

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