Influence of wrinkle defect on installation resistance and damage of CFRP/Ti interference-fit bolted joint

IF 7.8 2区材料科学 Q1 MATERIALS SCIENCE, COMPOSITES

Composite Structures Pub Date : 2026-08-01 Epub Date: 2026-07-21 DOI:10.1016/j.compstruct.2026.120687

Meng Du, Zengqiang Cao, Zhenfei Du, Minghao Zhang, Mengchen Yu, Lubin Huo

{"title":"Influence of wrinkle defect on installation resistance and damage of CFRP/Ti interference-fit bolted joint","authors":"Meng Du, Zengqiang Cao, Zhenfei Du, Minghao Zhang, Mengchen Yu, Lubin Huo","doi":"10.1016/j.compstruct.2026.120687","DOIUrl":null,"url":null,"abstract":"<div><div>Wrinkle is a common defect in carbon fiber reinforced polymer (CFRP) composites and can affect the mechanical properties of the interference-fit bolted structures which can significantly improve the fatigue strength of the CFRP structures. Wrinkles inevitably exert an influence on installation damage, making relevant research necessary. Therefore, five groups of experiments are designed to investigate the effects of different parameters on installation resistance and installation damage, and the corresponding mechanisms are discussed. The results show that the installation resistance and installation damage severity are positively correlated with wrinkle width and interference size, and negatively correlated with wrinkle height and the distance from the installation position to the wrinkle center. When the wrinkle width is much larger than the bolt shank diameter, the reverse installation resistance is lower than the forward installation resistance. When the wrinkle width is only slightly larger than the bolt shank diameter, the reverse installation resistance is higher than the forward installation resistance. The mechanisms are related to the load transfer capacity of the wrinkled layers and the strain energy of the fibers.</div></div>","PeriodicalId":281,"journal":{"name":"Composite Structures","volume":"394 ","pages":"Article 120687"},"PeriodicalIF":7.8000,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Composite Structures","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0263822326006525","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2026/7/21 0:00:00","PubModel":"Epub","JCR":"Q1","JCRName":"MATERIALS SCIENCE, COMPOSITES","Score":null,"Total":0}

引用次数: 0

Abstract

Wrinkle is a common defect in carbon fiber reinforced polymer (CFRP) composites and can affect the mechanical properties of the interference-fit bolted structures which can significantly improve the fatigue strength of the CFRP structures. Wrinkles inevitably exert an influence on installation damage, making relevant research necessary. Therefore, five groups of experiments are designed to investigate the effects of different parameters on installation resistance and installation damage, and the corresponding mechanisms are discussed. The results show that the installation resistance and installation damage severity are positively correlated with wrinkle width and interference size, and negatively correlated with wrinkle height and the distance from the installation position to the wrinkle center. When the wrinkle width is much larger than the bolt shank diameter, the reverse installation resistance is lower than the forward installation resistance. When the wrinkle width is only slightly larger than the bolt shank diameter, the reverse installation resistance is higher than the forward installation resistance. The mechanisms are related to the load transfer capacity of the wrinkled layers and the strain energy of the fibers.

查看原文本刊更多论文

褶皱缺陷对CFRP/Ti干涉配合螺栓连接安装阻力及损伤的影响

褶皱是碳纤维增强聚合物（CFRP）复合材料中常见的缺陷，它会影响干涉配合螺栓结构的力学性能，而干涉配合螺栓结构可以显著提高CFRP结构的疲劳强度。褶皱不可避免地对安装损坏产生影响，因此有必要进行相关研究。为此，设计了五组试验，研究了不同参数对安装阻力和安装损伤的影响，并探讨了相应的机理。结果表明：安装阻力和安装损伤程度与起皱宽度和干涉尺寸呈正相关，与起皱高度和安装位置到起皱中心的距离负相关；当起皱宽度远大于螺栓杆径时，反向安装阻力小于正向安装阻力。当起皱宽度仅略大于螺栓杆径时，反向安装阻力高于正向安装阻力。其机理与起皱层的载荷传递能力和纤维的应变能有关。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Composite Structures 工程技术-材料科学：复合

CiteScore

12.00

自引率

12.70%

发文量

1246

审稿时长

78 days

期刊介绍： The past few decades have seen outstanding advances in the use of composite materials in structural applications. There can be little doubt that, within engineering circles, composites have revolutionised traditional design concepts and made possible an unparalleled range of new and exciting possibilities as viable materials for construction. Composite Structures, an International Journal, disseminates knowledge between users, manufacturers, designers and researchers involved in structures or structural components manufactured using composite materials. The journal publishes papers which contribute to knowledge in the use of composite materials in engineering structures. Papers deal with design, research and development studies, experimental investigations, theoretical analysis and fabrication techniques relevant to the application of composites in load-bearing components for assemblies, ranging from individual components such as plates and shells to complete composite structures.