Evaluation of aging behavior under salt-fog spray conditions of green sandwich structures. Issue 7 (3rd October 2019)

• Record Type: Journal Article
• Authors: Fiore, Vincenzo; Scalici, Tommaso; Valenza, Antonino
• Is Part Of: Journal of natural fibers. Volume 16:Issue 7(2019)
• Page Start: 977
• Page End: 986
• Publication Date: 2019-10-03
• Subjects: Agglomerate cork -- aging -- flax -- mechanical properties -- salt-fogsandwich; 三明治 -- 老化 -- 盐雾 -- 凝聚软木 -- 亚麻 -- 力学性能; Textile research -- Periodicals; Textile research; Periodicals; 677.005
• DOI: 10.1080/15440478.2018.1444530
• Languages: English
• ISSNs: 1544-0478

Abstract

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.