Experimental deformation analysis of an adhesively bonded multi‐material joint for marine applications

IF 1.8 3区材料科学 Q2 MATERIALS SCIENCE, CHARACTERIZATION & TESTING

Strain Pub Date : 2023-03-16 DOI:10.1111/str.12433

P. Jaiswal, Raj Kumar, Thibault Juwet, G. Luyckx, Cedric Verhaeghe, W. De Waele

引用次数: 2

Abstract

The strength and deformation of full‐scale adhesively bonded multi‐material joints is studied in this paper. Four joints with a thick layer of methyl methacrylate adhesive (MMA) have been manufactured in shipyard conditions. In two specimens, cracks have been introduced at steel–adhesive and composite–adhesive interfaces. One cracked and one un‐cracked specimen were subjected to quasi‐static tensile testing; the two remaining specimens were stepwise loaded/unloaded with increasing load until failure. The strain in the adhesive layers was measured with digital image correlation (DIC). This showed a predominant shear deformation and dissimilar shear strain patterns for different bond lines. Fibre Bragg (FBG) sensors were used to monitor strains at steel and composite constituents and to detect the onset and evolution of damage in the un‐cracked specimen. Strains measured by FBG sensors correspond well with DIC results at nearby regions. All specimens failed by delamination of the composite panel near the composite–adhesive interface.

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船用多材料粘接接头的实验变形分析

本文研究了全尺寸多材料粘接接头的强度和变形。在船厂条件下，用厚层甲基丙烯酸甲酯胶粘剂(MMA)制造了四个接缝。在两个试样中，在钢粘结和复合粘结界面处引入了裂纹。分别对一个裂纹和一个未裂纹试件进行准静态拉伸试验;其余2个试件随着荷载的增大逐级加载/卸载，直至破坏。采用数字图像相关(DIC)技术测量粘接层的应变。结果表明，不同的粘结线具有明显的剪切变形和不同的剪切应变模式。光纤布拉格(FBG)传感器用于监测钢和复合材料成分的应变，并检测未破裂试样中损伤的发生和演变。FBG传感器测得的应变与附近区域的DIC结果吻合良好。所有试件均因复合材料粘结界面附近复合板的分层而失效。

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

Strain 工程技术-材料科学：表征与测试

CiteScore

4.10

自引率

4.80%

发文量

期刊介绍： Strain is an international journal that contains contributions from leading-edge research on the measurement of the mechanical behaviour of structures and systems. Strain only accepts contributions with sufficient novelty in the design, implementation, and/or validation of experimental methodologies to characterize materials, structures, and systems; i.e. contributions that are limited to the application of established methodologies are outside of the scope of the journal. The journal includes papers from all engineering disciplines that deal with material behaviour and degradation under load, structural design and measurement techniques. Although the thrust of the journal is experimental, numerical simulations and validation are included in the coverage. Strain welcomes papers that deal with novel work in the following areas: experimental techniques non-destructive evaluation techniques numerical analysis, simulation and validation residual stress measurement techniques design of composite structures and components impact behaviour of materials and structures signal and image processing transducer and sensor design structural health monitoring biomechanics extreme environment micro- and nano-scale testing method.