In-situ computed tomography analysis of the failure mechanisms of thermomechanically manufactured joints with auxiliary joining element

IF 2.5 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications Pub Date : 2024-02-27 DOI:10.1177/14644207241232233

T Borgert, D Köhler, E. Wiens, R Kupfer, J Troschitz, W Homberg, M Gude

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Abstract

Lightweight design by using low-density and load-adapted materials can reduce the weight of vehicles and the emissions generated during operation. However, the usage of different materials requires innovative joining technologies with increased versatility. In this investigation, the focus is on describing and characterising the failure behaviour of connections manufactured by an innovative thermomechanical joining process with adaptable auxiliary joining elements in single-lap tensile-shear tests. In order to analyse the failure development in detail, the specimens are investigated using in-situ computed tomography (in-situ CT). Here, the tensile-shear test is interrupted at points of interest and CT scans are conducted under load. In addition, the interrupted in-situ testing procedure is validated by comparing the loading behaviour with conventional continuous tensile-shear tests. The results of the in-situ investigations of joints with varying material combinations clearly describe the cause of failure, allowing conclusions towards an improved joint design.

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带辅助接合元件的热机械制造接头失效机理的原位计算机断层扫描分析

使用低密度和负荷适应性材料进行轻量化设计，可以减轻车辆重量，减少运行过程中产生的废气排放。然而，使用不同的材料需要创新的连接技术，以提高通用性。在这项研究中，重点是在单圈拉伸剪切试验中描述和表征由创新热机械连接工艺制造的连接件的失效行为，该工艺带有可调整的辅助连接元件。为了详细分析失效发展过程，我们使用原位计算机断层扫描（CT）对试样进行了研究。在这种情况下，拉伸剪切试验会在关注点处中断，并在负载下进行 CT 扫描。此外，通过将加载行为与传统的连续拉伸剪切试验进行比较，验证了中断原位测试程序。对不同材料组合的接头进行的原位研究结果清楚地描述了失效原因，为改进接头设计提供了结论。

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

Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications 工程技术-材料科学：综合

CiteScore

4.70

自引率

8.30%

发文量

166

审稿时长

3 months

期刊介绍： The Journal of Materials: Design and Applications covers the usage and design of materials for application in an engineering context. The materials covered include metals, ceramics, and composites, as well as engineering polymers. "The Journal of Materials Design and Applications is dedicated to publishing papers of the highest quality, in a timely fashion, covering a variety of important areas in materials technology. The Journal''s publishers have a wealth of publishing expertise and ensure that authors are given exemplary service. Every attention is given to publishing the papers as quickly as possible. The Journal has an excellent international reputation, with a corresponding international Editorial Board from a large number of different materials areas and disciplines advising the Editor." Professor Bill Banks - University of Strathclyde, UK This journal is a member of the Committee on Publication Ethics (COPE).