University of Hertfordshire

By the same authors

  • Tianyu Chen
  • Yiding Liu
  • Christopher Harvey
  • Kun Zhang
  • Simon Wang
  • Vadim Silberschmidt
  • Bingchen Wei
  • Xiang Zhang
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Original languageEnglish
Article number109632
Number of pages35
JournalComposite Science and Technology
Volume228
Early online date9 Jul 2022
DOIs
Publication statusE-pub ahead of print - 9 Jul 2022

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.

Notes

© 2022 Published by Elsevier Ltd. This is the accepted manuscript version of an article which has been published in final form at https://doi.org/10.1016/j.compscitech.2022.109632

ID: 27866589