Durability of bonded FRP-to-steel joints: Effects of moisture, de-icing salt solution, temperature and FRP type

被引：147

作者：

Heshmati, Mohsen ^{[1
]}

Haghani, Reza ^{[1
]}

Ai-Emrani, Mohammad ^{[1
]}

机构：

[1] Chalmers Univ Technol, Div Struct Engn, Dept Civil & Environm Engn, Gothenburg, Sweden

来源：

COMPOSITES PART B-ENGINEERING | 2017年 / 119卷

关键词：

Polymer-matrix composites (PMCs); Environmental degradation; Mechanical properties; FRP-steel bonded joints; DOUBLE-LAP JOINTS; ENVIRONMENTAL DURABILITY; ADHESIVE JOINTS; CFRP JOINTS; COMPOSITES; BEHAVIOR; CARBON; PREDICTION; STRENGTH; EXPOSURE;

D O I：

10.1016/j.compositesb.2017.03.049

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This paper investigates the effects of environmental ageing on the mechanical response of adhesively bonded double-lap shear joints made of steel and CFRP or GFRP adherents. One hundred and ninety-two specimens, 84 joints and 108 material coupons, were aged for up to three years in various environments including (i) immersion in distilled water at 20 degrees C and 45 degrees C, (ii) immersion in de-icing salt solution at 20 degrees C and 45 degrees C and (iii) exposure to 95% relative humidity at 45 degrees C. In general, immersion at 45 degrees C resulted in noticeably greater strength reductions at both material and joint level. While the strength and stiffness of the joints made of GFRP material underwent significant reductions, the CFRP/steel joints were affected to a considerably smaller degree. FE simulations showed the impact of the permeability of FRP adherents and moisture distribution at the FRP/adhesive interface on the integrity and strength of the joints. The joint-level results are compared with the most relevant durability data in the literature. (C) 2017 Elsevier Ltd. All rights reserved.

引用

页码：153 / 167

页数：15

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