A benchmark test for validating 3D simulation methods for delamination growth under quasi-static and fatigue loading. (15th February 2019)

• Record Type: Journal Article
• Authors: Carreras, L.; Renart, J.; Turon, A.; Costa, J.; Bak, B.L.V.; Lindgaard, E.; Martin de la Escalera, F.; Essa, Y.
• Is Part Of: Composite structures. Volume 210(2019)
• Page Start: 932
• Page End: 941
• Publication Date: 2019-02-15
• Subjects: Delamination -- 3D analysis -- Fatigue -- Benchmarking; Composite construction -- Periodicals; Composites -- Périodiques; 624.18
• DOI: 10.1016/j.compstruct.2018.12.008
• Languages: English
• ISSNs: 0263-8223

Abstract

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.