Characterization of seawater hygrothermal conditioning effects on the properties of titanium-based fiber-metal laminates for marine applications

被引：58
作者：
Ali, Aamir [1 ]
Pan, Lei [1 ]
Duan, Lixiang [1 ]
Zheng, Zengmin [1 ]
Sapkota, Bhuwan [1 ]
机构：
[1] Nanjing Univ Aeronaut & Astronaut, Coll Mat Sci & Technol, Nanjing 210016, Jiangsu, Peoples R China
来源：
COMPOSITE STRUCTURES | 2016年 / 158卷
基金：
中国国家自然科学基金;
关键词：
Fracture mechanisms; Mechanical properties and corrosion behavior; Metal/composite prepreg interface; Seawater hygrothermal conditioning; Titanium-carbon fiber/epoxy fiber-metal laminate (FML); VELOCITY IMPACT RESPONSE; MECHANICAL-PROPERTIES; ELASTIC PROPERTIES; FATIGUE BEHAVIOR; COMPOSITES; DURABILITY; STRENGTH;
D O I：
10.1016/j.compstruct.2016.09.037
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
The mechanical properties and corrosion behavior of the pure titanium TA2, carbon fiber/epoxy composite (CF/E composite), and titanium-carbon fiber/epoxy fiber-metal laminate (Ti FML) have been investigated after hygrothermal conditioning in seawater at 70 degrees C for marine applications. The results showed that the percentage reduction in the mechanical properties of the Ti FML was lower, compared to the CF/E composite, due to the shielding effect of outer TA2 layers against the water absorption. Unconditioned Ti FML specimens showed composite prepreg failure, whereas conditioned specimens exhibited delamination at the metal/composite prepreg interface as the primary failure mode. Plasticizing and swelling of the epoxy resin due to the combined effect of elevated temperature and water absorption, caused the generation of residual stresses that resulted in delamination at the metal/composite prepreg and fiber/resin interfaces. The TA2 foil showed negligible crevice corrosion on the surface because of the formation of the stable oxide film. (C) 2016 Elsevier Ltd. All rights reserved.
引用
收藏
页码：199 / 207
页数：9
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