Título
An integrated inverse numerical–experimental approach to determine the dynamic Mode-I interlaminar fracture toughness of fibre compositesAutor-a
Autor-a (de otra institución)
Otras instituciones
University of LondonUniversity of Oxford
Northwestern Polytechnical University
Ikerbasque
Versión
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© 2022 The AuthorsAcceso
Acceso abiertoVersión del editor
https://doi.org/10.1016/j.compstruct.2022.115734Publicado en
Composite Structures Vol. 293. N. artículo 115734, 2022Editor
ElsevierPalabras clave
Interlaminar fracture toughness
Wedge-DCB test
Cohesive elements
Dynamic delamination ... [+]
Wedge-DCB test
Cohesive elements
Dynamic delamination ... [+]
Interlaminar fracture toughness
Wedge-DCB test
Cohesive elements
Dynamic delamination
Hopkinson bar
Inverse modelling [-]
Wedge-DCB test
Cohesive elements
Dynamic delamination
Hopkinson bar
Inverse modelling [-]
Resumen
A combined numerical–experimental methodology is presented to determine the dynamic Mode-I fracture properties of Fibre-Reinforced Polymer (FRP) composites. The experimental aspect consists of a modif ... [+]
A combined numerical–experimental methodology is presented to determine the dynamic Mode-I fracture properties of Fibre-Reinforced Polymer (FRP) composites. The experimental aspect consists of a modified Wedge-Double cantilever Beam (WDCB) test using a Split Hopkinson Pressure Bar (SHPB) set-up followed by a numerical inverse modelling strategy using cohesive-zone approach. The proposed method is inherently robust due to the use of three independent comparison metrics namely, the strain–displacement response, the crack length history and the crack opening history to uniquely determine the delamination properties. More importantly, the complexity of dealing with the frictional effects between the wedge and the DCB specimen is effectively circumvented by utilising appropriate acquisition techniques. The proposed methodology is applied to extract the high-rate interlaminar fracture properties of a carbon fibre reinforced composite, IM7/8552 and it is further shown that a high level of confidence in the calibrated data can be established by adopting the proposed methodology. [-]
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