在混合拉伸和弯曲循环加载条件下，基于声发射的钻孔 GFRP 分层研究

IF 2.3 3区材料科学 Q3 MATERIALS SCIENCE, COMPOSITES

Journal of Reinforced Plastics and Composites Pub Date : 2024-09-14 DOI:10.1177/07316844241279721

Amirhossein Beigi, Ali Bastani Lay, Mehdi Ahmadi Najafabadi

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引用次数: 0

摘要

钻孔过程会在玻璃纤维增强聚合物（GFRP）中造成各种缺陷，如分层，最终导致破坏的发展，尤其是在疲劳载荷下。因此，本研究旨在利用声发射（AE）、图像处理和机械行为监测技术，研究承受循环弯曲和拉伸载荷的钻孔复合材料的破坏过程。结果表明，疲劳图由三个阶段组成，分别是纤维和基体抵抗分层扩展、分层稳定发展和最终破坏扩散，声发射和机械方法可准确识别这三个阶段。此外，在所有加载条件下，所有疲劳图的模式和程序都是相似的，且与加载参数无关。这项研究的结果为在多轴疲劳加载条件下对 GFRP 的分层扩展进行实时结构健康监测（SHM）提供了一种策略。

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Acoustic emission-based delamination investigation in drilled GFRP under mixed tensile and bending cyclic loading

The drilling process can cause various defects in glass fiber-reinforced polymer (GFRP), such as delamination, which ultimately leads to damage progression, especially under fatigue loading. Therefore, the current study aims to investigate the progression of failure in drilled composites subjected to cyclic bending and tensile loads using acoustic emission (AE), image processing, and mechanical behavior monitoring. The results show tyhat the fatigue diagram consists of three stages associated with resistance of fibers and matrix against delamination propagation, stable delamination progression, and ultimate spread of failure which are accurately identified by AE and mechanical methods. Additionally, the pattern and procedure of all fatigue diagrams under all loading conditions were similar and independent of loading parameters. Results from this study provide a strategy for real-time structural health monitoring (SHM) of delamination propagation in GFRPs under multi-axial fatigue loading.

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来源期刊

Journal of Reinforced Plastics and Composites 工程技术-材料科学：复合

CiteScore

5.40

自引率

6.50%

发文量

审稿时长

1.3 months

期刊介绍： The Journal of Reinforced Plastics and Composites is a fully peer-reviewed international journal that publishes original research and review articles on a broad range of today''s reinforced plastics and composites including areas in: Constituent materials: matrix materials, reinforcements and coatings. Properties and performance: The results of testing, predictive models, and in-service evaluation of a wide range of materials are published, providing the reader with extensive properties data for reference. Analysis and design: Frequency reports on these subjects inform the reader of analytical techniques, design processes and the many design options available in materials composition. Processing and fabrication: There is increased interest among materials engineers in cost-effective processing. Applications: Reports on new materials R&D are often related to the service requirements of specific application areas, such as automotive, marine, construction and aviation. Reports on special topics are regularly included such as recycling, environmental effects, novel materials, computer-aided design, predictive modelling, and "smart" composite materials. "The articles in the Journal of Reinforced Plastics and Products are must reading for engineers in industry and for researchers working on leading edge problems" Professor Emeritus Stephen W Tsai National Sun Yat-sen University, Taiwan This journal is a member of the Committee on Publication Ethics (COPE).