Adhesive joint design methods and examples

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Challenges of reliable prediction of resistance of bonded joints lie in the complexity of stress concentrations, multiple crack paths, mode-mixity and sudden crack propagation. The new Technical Specification for Design of fibre-polymer composite structures (TS) is bridging this gap by providing comprehensive sets of design recommendations and analyses to be used for the verification of adhesive joints. Two design approaches in the TS, based on stress analysis and fracture mechanics, are summarized and basic design assumptions on allowed failure conditions and partial factors in relation to execution and maintenance are highlighted. The application of the design recommendations is shown on the example of determining the design value and the ultimate resistance of a simple double lap joint. FE models built in Abaqus are used to analyse stress concentrations and crack initiation and propagation based on material level experiments. Variability of the material properties are taken into account through partial safety factors. Joint resistances obtained by the stress-based approach and fracture-mechanics approach are compared.
Original languageEnglish
Title of host publicationProceedings of the 20th European Conference on Composite Materials: Composites Meet Sustainability
Subtitle of host publicationVol 5 – Applications and Structures
EditorsAnastasios P. Vassilopoulos , Véronique Michaud
Place of PublicationLausanne
PublisherEPFL Lausanne, Composite Construction Laboratory
Number of pages8
ISBN (Electronic)978-2-9701614-0-0
Publication statusPublished - 2022
Event20th European Conference on Composite Materials: Composites Meet Sustainability - Lausanne, Switzerland
Duration: 26 Jun 202230 Jun 2022
Conference number: 20


Conference20th European Conference on Composite Materials
Abbreviated titleECCM20


  • design recommendation
  • adhesive joints
  • admisable failure mode
  • stress analysis
  • fracture mechanics


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