Effect of temperature on the low-velocity impact response of environmentally friendly cork sandwich structures

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dc.contributor.author Sergi, Claudia
dc.contributor.author Sarasini, Fabrizio
dc.contributor.author Russo, Pietro
dc.contributor.author Vitiello, Libera
dc.contributor.author Barbero Pozuelo, Enrique
dc.contributor.author Sánchez Sáez, Sonia
dc.contributor.author Tirillò, Jacopo
dc.date.accessioned 2022-04-01T14:37:01Z
dc.date.available 2022-04-01T14:37:01Z
dc.date.issued 2022-02-01
dc.identifier.bibliographicCitation Journal of Sandwich Structures and Materials, (2022), 24(2), pp.: 1099–1121.
dc.identifier.issn 1099-6362
dc.identifier.uri http://hdl.handle.net/10016/34512
dc.description.abstract Impact events are common in every-day life and can severely compromise the integrity and reliability of high-performing structures such as sandwich composites that are widespread in different industrial fields. Considering their susceptibility to impact damage and the environmental issues connected with their exploitation of synthetic materials, the present work aims to propose a bio-based sandwich structure with an agglomerated cork core and a flax/basalt intraply fabric as skin reinforcement and to address its main weakness, i.e. its impact response. In-service properties are influenced by temperature, therefore the effect of high (60 °C) and low (−40°C) temperatures on the impact behavior of the proposed structures was investigated and a suitable comparison with traditional (polyvinyl chloride) (PVC) foams was provided. The results highlighted the embrittlement effect of decreasing temperature on the impact resistance of the sole cores and skins and of the overall structures with a reduction in the perforation energy that shifted, in the last case, from 50–60 J at – 40 °C up to more than 180 J at 60 °C. A maleic anhydride coupling agent in the skins hindered fundamental energy dissipation mechanisms such as matrix plasticization, determining a reduction in the perforation threshold of all composites. In particular, neat polypropylene (PP) skins displayed a perforation energy of 20 J higher than compatibilized (PPC) ones at 60 °C, while agglomerated cork sandwich structures at 60 °C were characterized by a perforation threshold higher of at least 50 J.
dc.format.extent 22
dc.language.iso eng
dc.publisher SAGE
dc.rights © The Author(s) 2021.
dc.subject.other Agglomerated cork
dc.subject.other PVC foam
dc.subject.other Sandwich structures
dc.subject.other Basalt
dc.subject.other Flax
dc.subject.other Low velocity impact
dc.subject.other Temperature
dc.title Effect of temperature on the low-velocity impact response of environmentally friendly cork sandwich structures
dc.type article
dc.description.status Publicado
dc.subject.eciencia Materiales
dc.identifier.doi https://doi.org/10.1177%2F10996362211035421
dc.rights.accessRights openAccess
dc.type.version acceptedVersion
dc.identifier.publicationfirstpage 1099
dc.identifier.publicationissue 2
dc.identifier.publicationlastpage 1121
dc.identifier.publicationtitle JOURNAL OF SANDWICH STRUCTURES & MATERIALS
dc.identifier.publicationvolume 24
dc.identifier.uxxi AR/0000028992
dc.affiliation.dpto UC3M. Departamento de Mecánica de Medios Continuos y Teoría de Estructuras
dc.affiliation.grupoinv UC3M. Grupo de Investigación: Mecánica de Materiales Avanzados
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