A benchmark test for validating 3D simulation methods for delamination growth under quasi-static and fatigue loading

Laura Carreras, Jordi Renart, Albert Turon, Josep Costa, Brian Lau Verndal Bak, Esben Lindgaard, Federico Martin de la Escalera, Yasser Essa

Research output: Contribution to journalJournal articleResearchpeer-review

3 Citations (Scopus)

Abstract

Models for simulating interlaminar crack growth in composites under static and fatigue loads are rarely validated with experimental data different from simple standard tests where the crack front propagates with a uniform shape. The underlying reason for not making use of more realistic experimental data, where the crack front shape changes during the delamination growth, is the lack of well-controlled benchmark cases. This work introduces a comprehensive benchmark case consisting of a double cantilever beam (DCB)-like specimen with partially reinforced arms. A complete set of elastic and fracture properties for the material and a detailed description of load-displacement curves and crack front geometries, monitored with X-ray radiography, is provided. The benchmark case generates a rich phenomenology of crack advance in terms of varying crack growth rate and front shape, while being geometrically simple enough to be simulated.

Original languageEnglish
JournalComposite Structures
Volume210
Pages (from-to)932-941
Number of pages10
ISSN0263-8223
DOIs
Publication statusPublished - 15 Feb 2019

Keywords

  • 3D analysis
  • Benchmarking
  • Delamination
  • Fatigue

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