Evaluation of aging behavior under salt-fog spray conditions of green sandwich structures

Vincenzo Fiore*, Tommaso Scalici, Antonino Valenza

*Corresponding author for this work

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

In this paper, the aging resistance of sandwich structures made with cork agglomerate as core and flax-reinforced polymeric laminates as face sheets was investigated for the first time. In order to evaluate their durability in a hostile environment, a sandwich plate was manufactured by vacuum bagging technique and aged under salt-fog spray conditions, according to ASTM B 117 standard. The evolution of the sandwich mechanical properties during the aging exposition was analyzed by carrying out quasi-static flexural tests and Charpy impact tests both on unaged specimens and on specimens aged for 10, 25, and 60 days, respectively. The quasi-static experimental results showed that despite the salt-fog exposition leads to clear decrements in both maximum strength and modulus, the deformation capability of the sandwich structure evidences a noticeable improvement. According to this last result, it was found that the impact strength of the sandwich specimens was clearly increased after the salt-fog exposition evidencing that the studied green sandwich maintains good toughness properties in a hostile environment such as marine.

Original languageEnglish
Pages (from-to)977-986
Number of pages10
JournalJournal of Natural Fibers
Volume16
Issue number7
Early online date28 Feb 2018
DOIs
Publication statusPublished - 03 Oct 2019
Externally publishedYes

Keywords

  • Agglomerate cork
  • aging
  • flax
  • mechanical properties
  • salt-fogsandwich

ASJC Scopus subject areas

  • Materials Science (miscellaneous)

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