Failure modes of CF-PEEK overmoulded onto unidirectionally reinforced CF-LM-PAEK: Multi-scale pull-off testing and microscopy investigation of rib stiffened geometries

IF 14.2 1区材料科学 Q1 ENGINEERING, MULTIDISCIPLINARY

Composites Part B: Engineering Pub Date : 2025-06-09 DOI:10.1016/j.compositesb.2025.112700

Andrew J. Parsons , Jesús Molinar-Díaz , Anatoly Koptelov , Will Darby , Helia Hooshmand , Francisco U. Hernandez Ledezma , Ole T. Thomsen , Jonathan P.H. Belnoue , Lee T. Harper

{"title":"Failure modes of CF-PEEK overmoulded onto unidirectionally reinforced CF-LM-PAEK: Multi-scale pull-off testing and microscopy investigation of rib stiffened geometries","authors":"Andrew J. Parsons , Jesús Molinar-Díaz , Anatoly Koptelov , Will Darby , Helia Hooshmand , Francisco U. Hernandez Ledezma , Ole T. Thomsen , Jonathan P.H. Belnoue , Lee T. Harper","doi":"10.1016/j.compositesb.2025.112700","DOIUrl":null,"url":null,"abstract":"<div><div>Overmoulding is a manufacturing technique used to create structural composite components with complex shapes, combining regions of continuous and short fibre reinforcement. It is possible to produce structural parts at high rates, whilst minimising materials costs. The interface between the regions of continuous and short fibre material is key to the performance of the structure. This work investigates pull-off testing as a direct method for measuring rib-on-plate bonding strength, a common structural feature of overmoulding. Different rib joint types (Butt, Radius, Step) and specimen sizes (1, 5, 20 mm) are used to investigate the fidelity of the test, when applied to unidirectionally-reinforced low melting point (LM)-PAEK bonded to PEEK ribs.The main findings are that the Butt joint appears to provide the most reliable pull-off test data in terms of determining the interface strength. While the Radius and Step configurations improve local strain and moulding consistency respectively, they tend to promote failure through the ply structure rather than the interface. Recommendations are made in relation to specimen length, ply structure and allowable deformation during manufacture.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"305 ","pages":"Article 112700"},"PeriodicalIF":14.2000,"publicationDate":"2025-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Composites Part B: Engineering","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1359836825006018","RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, MULTIDISCIPLINARY","Score":null,"Total":0}

引用次数: 0

Abstract

Overmoulding is a manufacturing technique used to create structural composite components with complex shapes, combining regions of continuous and short fibre reinforcement. It is possible to produce structural parts at high rates, whilst minimising materials costs. The interface between the regions of continuous and short fibre material is key to the performance of the structure. This work investigates pull-off testing as a direct method for measuring rib-on-plate bonding strength, a common structural feature of overmoulding. Different rib joint types (Butt, Radius, Step) and specimen sizes (1, 5, 20 mm) are used to investigate the fidelity of the test, when applied to unidirectionally-reinforced low melting point (LM)-PAEK bonded to PEEK ribs.The main findings are that the Butt joint appears to provide the most reliable pull-off test data in terms of determining the interface strength. While the Radius and Step configurations improve local strain and moulding consistency respectively, they tend to promote failure through the ply structure rather than the interface. Recommendations are made in relation to specimen length, ply structure and allowable deformation during manufacture.

查看原文本刊更多论文

单向增强CF-LM-PAEK上复模CF-PEEK的失效模式：肋增强几何形状的多尺度拉脱试验和显微研究

复模是一种制造技术，用于制造具有复杂形状的结构复合部件，结合连续和短纤维增强区域。以高速率生产结构件是可能的，同时将材料成本降至最低。连续纤维和短纤维材料之间的界面是结构性能的关键。这项工作研究了拉脱测试作为测量肋板结合强度的直接方法，这是复模的常见结构特征。当应用于单向增强低熔点(LM)-PAEK粘合到PEEK肋条时，使用不同的肋条连接类型（对接，半径，步进）和试样尺寸（1,5,20 mm）来研究测试的保真度。主要发现是，在确定界面强度方面，对接接头似乎提供了最可靠的拉脱测试数据。虽然半径和阶梯配置分别提高了局部应变和成型一致性，但它们倾向于通过层状结构而不是界面导致破坏。对试样长度、厚度结构和制造过程中的允许变形提出了建议。

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

Composites Part B: Engineering 工程技术-材料科学：复合

CiteScore

24.40

自引率

11.50%

发文量

784

审稿时长

21 days

期刊介绍： Composites Part B: Engineering is a journal that publishes impactful research of high quality on composite materials. This research is supported by fundamental mechanics and materials science and engineering approaches. The targeted research can cover a wide range of length scales, ranging from nano to micro and meso, and even to the full product and structure level. The journal specifically focuses on engineering applications that involve high performance composites. These applications can range from low volume and high cost to high volume and low cost composite development. The main goal of the journal is to provide a platform for the prompt publication of original and high quality research. The emphasis is on design, development, modeling, validation, and manufacturing of engineering details and concepts. The journal welcomes both basic research papers and proposals for review articles. Authors are encouraged to address challenges across various application areas. These areas include, but are not limited to, aerospace, automotive, and other surface transportation. The journal also covers energy-related applications, with a focus on renewable energy. Other application areas include infrastructure, off-shore and maritime projects, health care technology, and recreational products.