考虑粘合线厚度和重叠长度对单搭接接头影响的机械发光可视化技术

IF 3.2 3区材料科学 Q2 ENGINEERING, CHEMICAL

International Journal of Adhesion and Adhesives Pub Date : 2024-07-16 DOI:10.1016/j.ijadhadh.2024.103786

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引用次数: 0

摘要

该研究通过使用机械发光（ML）传感技术分析动态应变分布，研究了粘结线厚度和重叠长度对单圈粘结接头性能的影响。随着粘合线厚度从 0.1 毫米增加到 1.0 毫米，粘合区域顶部和底部边缘的裂纹扩展模式明显向断裂过渡。具体来说，裂纹扩展行为的差异可在一个或两个粘合界面附近直观地发现。此外，在搭接剪切试验中，重叠长度对失效模式（包括裂纹扩展和剪切力）的影响也可通过 ML 直观区分。尽管 ML 传感器是一种简单的喷涂传感器，但它在显示与粘接设计相关的机械行为（如粘接线厚度和重叠长度）方面显示出了有效性。

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Mechanoluminescent visualization for considering effect of bondline thickness and overlap length on single lap joint

The study examines impact of bondline thickness and overlap length on the performance of single-lap bonded joints by analyzing the dynamic strain distribution using mechanoluminescence (ML) sensing. As the bondline thickness increased from 0.1 to 1.0 mm, the pattern of crack propagation from the top and bottom edges of the bonded region exhibited a marked transition toward rupture. Specifically, the differences in crack propagation behavior were visually identified near one or both bonding interfaces. Additionally, the impact of overlap length on failure modes in lap shear tests, including crack propagation and shear forces, was visually differentiated through ML. Despite its simplicity as a spray-on sensor, ML sensing demonstrated effectiveness in indicating mechanical behavior related to bonding design, such as bondline thickness and overlap length.

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来源期刊

International Journal of Adhesion and Adhesives 工程技术-材料科学：综合

CiteScore

6.90

自引率

8.80%

发文量

200

审稿时长

8.3 months

期刊介绍： The International Journal of Adhesion and Adhesives draws together the many aspects of the science and technology of adhesive materials, from fundamental research and development work to industrial applications. Subject areas covered include: interfacial interactions, surface chemistry, methods of testing, accumulation of test data on physical and mechanical properties, environmental effects, new adhesive materials, sealants, design of bonded joints, and manufacturing technology.