Synergistic Performance Degradation of Marine Structural Elements: Case Study of Polymer-Based Composite and Steel Hybrid Double Lap Joints

IF 4.6 Q2 MATERIALS SCIENCE, BIOMATERIALS
Halis Haluk Baykal, Gokdeniz Neser
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Abstract

Abstract The degradation of structures under the influence of a marine environment tends to be rapid and disruptive compared to that of structures that are far away from these influences. Efforts to consider these impacts in the design phase are increasing, with a view to the construction of more sustainable structures. However, experimental data from which designers and builders can benefit cannot be found in the relevant literature, especially when it comes to the effects of composite degradation. In this study, we experimentally investigate the combined effects of degradation factors such as a drying-wetting cycle, the shape of the structure, the variety of materials used in the structure, and the differences in the manufacturing of the materials . The structure chosen as an example is a hybrid structural double lap joint composed of epoxy resin, fibreglass composite, and steel, which is widely used in ship structures. The experiments considered four aging periods (zero, 30, 60 and 90 days) under a wet-dry cycle in a programmable corrosion chamber, two overlap lengths (short and long), two surface roughnesses of the steel parts (50 and 90 μm), and two surface preparation alternatives (uncoated and coated with epoxy primer). The synergistic effects of these parameters on the tensile strength, deformation and toughness of the joints were evaluated, and suggestions are made for ship designers. The attention of interested parties, and particularly ship designers, is drawn to the comparative effects of these degradation agents on performance.
海洋结构元件的协同性能退化:以聚合物基复合材料和钢混合双搭接为例
与远离海洋环境影响的结构相比,受海洋环境影响的结构的退化往往是迅速和破坏性的。在设计阶段考虑这些影响的努力正在增加,以期建造更可持续的结构。然而,在相关文献中无法找到设计者和建造者可以从中受益的实验数据,特别是当涉及到复合材料降解的影响时。在这项研究中,我们通过实验研究了诸如干湿循环、结构形状、结构中使用的各种材料以及材料制造差异等降解因素的综合影响。以环氧树脂、玻璃纤维复合材料和钢复合材料组成的混合结构双搭接为例,该结构在船舶结构中应用广泛。实验考虑了在可编程腐蚀室中干湿循环下的4个老化周期(0、30、60和90天)、两种重叠长度(短和长)、两种表面粗糙度(50和90 μm)以及两种表面处理方案(未涂覆和涂覆环氧底漆)。评估了这些参数对接头抗拉强度、变形和韧性的协同效应,并为船舶设计人员提出了建议。有关方面,特别是船舶设计者的注意力被吸引到这些降解剂对性能的比较影响上。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
ACS Applied Bio Materials
ACS Applied Bio Materials Chemistry-Chemistry (all)
CiteScore
9.40
自引率
2.10%
发文量
464
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