Fatigue performance investigation of perforated and bolted pultruded glass fiber reinforced polymer laminates based on experiment and digital images

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

Journal of Composite Materials Pub Date : 2024-01-29 DOI:10.1177/00219983241230381

Zhihua Xiong, Yang Meng, Chenyu Zhao, Yuqing Liu, Xiaoyu Liu

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Abstract

To investigate the fatigue performance of perforated and bolted pultruded Glass Fiber Reinforced Polymer (GFRP) laminates, a series of tests are conducted including static tensile and cyclic fatigue test, while Digital Image Correlation (DIC) and CT tests were implemented to monitor strains around the perforations and damage developed in the samples subjected to tensile and fatigue tests respectively. The stress concentrations of the cyclic loaded perforated GFRP laminates are discussed based on the experiment results. Due to the stress limitation of single bolted laminates, the diameter to width ratio is suggested to be less than 0.3. The GFRP laminates with double holes have a better fatigue performance than that of single hole, which is called the double-hole effect. This effect is also found in double bolted GFRP laminates. Considering the strength of the laminates between the holes and to unify the requirement, the critical distance to width ratio is suggested to be 1.6 and the diameter to width ratio should be less than 0.3.

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基于实验和数字图像的穿孔和螺栓拉挤玻璃纤维增强聚合物层压板疲劳性能研究

为了研究穿孔和螺栓拉挤玻璃纤维增强聚合物（GFRP）层压板的疲劳性能，进行了一系列试验，包括静态拉伸和循环疲劳试验，同时采用数字图像相关性（DIC）和 CT 试验分别监测穿孔周围的应变和样品在拉伸和疲劳试验中产生的损伤。根据实验结果讨论了循环加载穿孔 GFRP 板材的应力集中问题。由于单螺栓层压板的应力限制，建议直径与宽度之比小于 0.3。双孔 GFRP 层压板的疲劳性能优于单孔，这就是双孔效应。双螺栓连接的 GFRP 层压板也存在这种效应。考虑到孔间层压板的强度和统一要求，建议临界距离与宽度比为 1.6，直径与宽度比应小于 0.3。

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

Journal of Composite Materials 工程技术-材料科学：复合

CiteScore

5.40

自引率

6.90%

发文量

274

审稿时长

6.8 months

期刊介绍： Consistently ranked in the top 10 of the Thomson Scientific JCR, the Journal of Composite Materials publishes peer reviewed, original research papers from internationally renowned composite materials specialists from industry, universities and research organizations, featuring new advances in materials, processing, design, analysis, testing, performance and applications. This journal is a member of the Committee on Publication Ethics (COPE).