Assessment of dynamic mode-I delamination driving force in double cantilever beam tests for fiber-reinforced polymer composite and adhesive materials

Tianyu Chen, Yiding Liu, Christopher Harvey, Kun Zhang, Simon Wang, Vadim Silberschmidt, Bingchen Wei, Xiang Zhang

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Abstract

The double cantilever beam (DCB) tests are widely used to assess the interfacial delamination properties of laminated composites. For quasi-static loads, the DCB tests are standardized based on the beam mechanics; for dynamic loads, however, such as high-loading-rate impact and cyclic loads, there is no established analytical theory. This presents a significant obstacle preventing the research community from assessing the delamination behavior of composites or adhesives for their application under complex in-service loads. In this paper, the theory of evaluating dynamic mode-I delamination driving force for DCBs under general displacement loads is developed for the first time, accounting for structural vibration effects. The developed theory is demonstrated by two examples: high-loading-rate split Hopkinson bar impact and cyclic fatigue loads. The analytical solutions are validated by published experiment results and in-house tests. This work provides a fundamental analytical tool to study and assess the fracture behavior of fiber reinforced polymer composite and adhesive materials under various loading conditions.
Original languageEnglish
Article number109632
Number of pages35
JournalComposites Science and Technology
Volume228
Early online date9 Jul 2022
DOIs
Publication statusPublished - 29 Sept 2022

Keywords

  • double cantilever beam test
  • dynamic energy release rate
  • general displacement loads
  • cyclic loads
  • high loading rate and impact
  • Dynamic energy release rate
  • Cyclic loads
  • High loading rate and impact
  • Double cantilever beam test
  • General displacement loads

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