Journal
COMPOSITE STRUCTURES
Volume 210, Issue -, Pages 932-941Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.compstruct.2018.12.008
Keywords
Delamination; 3D analysis; Fatigue; Benchmarking
Categories
Funding
- European Union [ERANet AirTN 01/2013]
- Spanish Government (Ministerio de Economia y Competitividad) [TRA2015-71491-R]
- European Social Fund
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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.
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