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oai:recercat.cat:10256/260552025-02-04T00:07:04Zcom_2072_452955com_2072_2054col_2072_453061

2025-02-04T00:07:04Z urn:hdl:10256/26055 Mitigating the weak impact response of thin-ply based thin laminates through an unsymmetrical laminate design incorporating intermediate grade plies Sasikumar, Aravind Trias Mansilla, Daniel Costa i Balanzat, Josep Singery, Vicky Linde, Peter Assaigs de materials Materials laminats Mecànica de fractura Materials compostos Materials -- Testing Laminated materials Fracture mechanics Composite materials With aeronautic industries focussing on thinner structures and reducing manufacturing costs, recent research has been dedicated to the impact and post impact response of thin laminates (<2 mm) made of textile fabric composites. A recent study revealed that thin laminates based on thin plies exhibit extensive fibre failure and a reduced compression after impact strength. To mitigate this weakness, we propose a novel laminate concept based on combining plies of different thicknesses in an unsymmetrical configuration (intermediate grade plies are located only at the bottom of the laminate, i.e., the non-impacted face). C-scan inspection on impacted and quasi-statically indented specimens, allowed the damage sequence of the proposed unsymmetrical hybrid laminate to be compared with that of the thin-ply baseline. The hybrid laminate with intermediate plies at the bottom, delayed and reduced the fibre damage, decreased the projected delamination area and led to a 30% increase in the compression after impact strength in contrast to the thin-ply baseline laminate The first author would like to thank the Generalitat de Catalunya for the FI-DGR pre-doctoral grant (2018 FI-B2 00118). his work has been supported by the Spanish Ministerio de Economía y Competitividad through the grant coded MAT2015-69491-C3-1-R, supported by FEDER/E 2025-02-04T00:07:04Z 2025-02-04T00:07:04Z 2019-07 info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion peer-reviewed http://hdl.handle.net/10256/26055 info:eu-repo/semantics/altIdentifier/doi/10.1016/j.compstruct.2019.03.069 info:eu-repo/semantics/altIdentifier/issn/0263-8223 info:eu-repo/semantics/altIdentifier/eissn/1879-1085 MAT2015-69491-C3-1-R info:eu-repo/grantAgreement/MINECO//MAT2015-69491-C3-1-R/ES/HIBRIDACION LOCAL DE MATERIALES COMPUESTOS LAMINADOS PARA MEJORAR SU TOLERANCIA AL DAÑO/ Reconeixement-NoComercial-SenseObraDerivada 4.0 Internacional info:eu-repo/semantics/openAccess Elsevier © Composite Structures, 2019, vol. 220, p. 93-104 Articles publicats (D-EMCI) Sasikumar, Aravind Trias Mansilla, Daniel Costa i Balanzat, Josep Singery, Vicky Linde, Peter 2019 Mitigating the weak impact response of thin-ply based thin laminates through an unsymmetrical laminate design incorporating intermediate grade plies Composite Structures 220 93 104