Mixed Mode Failure Predictions for Composite Adhesive Joints based on EA 9394 Paste Adhesive

Aviad Levi Sasson*, Yuval Freed

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Composite materials are increasingly used in the aviation industry for various products. They introduce high strength and stiffness, yet low weight. Bonded composites are even more attractive, since usage of such assembly concept may lead to further weight and cost reductions, as well as faster assembly, which is essential in future aviation products. Development of reliable cohesive failure criteria are needed for design of bonded structures to be used by the aviation industry. This study presents a comprehensive testing campaign of bonded composites, conducted for three different bond line thicknesses with a variety of mode mixities. EA 9394 paste adhesive, was investigated. The Mixed Mode Bending (MMB) test specimen was used. FE simulations were executed to obtain the stress distributions in the vicinity of the disbond tips, leading to establishment of a macroscopic stress-based failure envelope for different mode mixities and bond line thicknesses.

Original languageEnglish
Title of host publicationIACAS 2022 - 61st Israel Annual Conference on Aerospace Science
PublisherTechnion Israel Institute of Technology
ISBN (Electronic)9781713862253
StatePublished - 2022
Externally publishedYes
Event61st Israel Annual Conference on Aerospace Science, IACAS 2022 - Haifa, Israel
Duration: 9 Mar 202210 Mar 2022

Publication series

NameIACAS 2022 - 61st Israel Annual Conference on Aerospace Science

Conference

Conference61st Israel Annual Conference on Aerospace Science, IACAS 2022
Country/TerritoryIsrael
CityHaifa
Period9/03/2210/03/22

Keywords

  • Adhesive Joint
  • EA9394
  • Failure Prediction
  • MMB testing
  • adhesive pate

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