Geometry and temperature effects on tensile properties and failure behaviors of open-hole and bolted-joint CF/PEKK composites

IF 8.1 2区材料科学 Q1 ENGINEERING, MANUFACTURING Composites Part A: Applied Science and Manufacturing Pub Date : 2024-06-26 DOI:10.1016/j.compositesa.2024.108336

Xiaoqi Li , Sanjay Kumar , Dong-Wook Hwang , Do-Hoon Shin , Sung-Youl Bae , Yun-Hae Kim

{"title":"Geometry and temperature effects on tensile properties and failure behaviors of open-hole and bolted-joint CF/PEKK composites","authors":"Xiaoqi Li , Sanjay Kumar , Dong-Wook Hwang , Do-Hoon Shin , Sung-Youl Bae , Yun-Hae Kim","doi":"10.1016/j.compositesa.2024.108336","DOIUrl":null,"url":null,"abstract":"<div>Temperature-dependent tensile properties of carbon-fiber-reinforced polyetherketoneketone (CF/PEKK) composites with varying width-to-diameter (W/D) ratios in open-hole (OH) and bolted joint (BJ) were investigated. CF/PEKK exhibited higher modulus and strength at lower temperature due to restricted polymer chain mobility, and lower values at elevated temperature due to increased polymer ductility. OH net tensile strength decreased with decreasing W/D, with strain retention dropping significantly at W/D ≤ 2. The approximate average strain concentration factor determined from digital image correlation slightly exceeded theoretical values due to semi-crystalline nature of PEKK. Distinct failure behaviors highlighting the complex interplay between temperature, W/D, and failure characteristics. Evaluating W/D and temperature effects on BJ CF/PEKK revealed changing failure modes. Bolted joint efficiency emphasizing the need to optimize W/D ratios above 2 to achieve high efficiency. These findings highlight the geometry and temperature interplay affects CF/PEKK composites, which are crucial for designing high-performance materials, especially for aerospace applications.</div>","PeriodicalId":282,"journal":{"name":"Composites Part A: Applied Science and Manufacturing","volume":null,"pages":null},"PeriodicalIF":8.1000,"publicationDate":"2024-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Composites Part A: Applied Science and Manufacturing","FirstCategoryId":"1","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1359835X24003336","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, MANUFACTURING","Score":null,"Total":0}

引用次数: 0

Abstract

Temperature-dependent tensile properties of carbon-fiber-reinforced polyetherketoneketone (CF/PEKK) composites with varying width-to-diameter (W/D) ratios in open-hole (OH) and bolted joint (BJ) were investigated. CF/PEKK exhibited higher modulus and strength at lower temperature due to restricted polymer chain mobility, and lower values at elevated temperature due to increased polymer ductility. OH net tensile strength decreased with decreasing W/D, with strain retention dropping significantly at W/D ≤ 2. The approximate average strain concentration factor determined from digital image correlation slightly exceeded theoretical values due to semi-crystalline nature of PEKK. Distinct failure behaviors highlighting the complex interplay between temperature, W/D, and failure characteristics. Evaluating W/D and temperature effects on BJ CF/PEKK revealed changing failure modes. Bolted joint efficiency emphasizing the need to optimize W/D ratios above 2 to achieve high efficiency. These findings highlight the geometry and temperature interplay affects CF/PEKK composites, which are crucial for designing high-performance materials, especially for aerospace applications.

查看原文

微信好友朋友圈 QQ好友复制链接

本刊更多论文

几何形状和温度对开孔和螺栓连接 CF/PEKK 复合材料拉伸性能和破坏行为的影响

研究了不同宽径比（W/D）的碳纤维增强聚醚醚酮（CF/PEKK）复合材料在开孔（OH）和螺栓连接（BJ）中随温度变化的拉伸性能。由于聚合物链的流动性受到限制，CF/PEKK 在低温下表现出较高的模量和强度，而在高温下由于聚合物延展性增加，模量和强度值较低。OH 净拉伸强度随着 W/D 的减小而降低，W/D ≤ 2 时应变保持率显著下降。由于 PEKK 的半结晶性质，通过数字图像相关性确定的近似平均应变集中因子略微超出理论值。不同的失效行为突显了温度、W/D 和失效特性之间复杂的相互作用。评估 W/D 和温度对 BJ CF/PEKK 的影响揭示了不断变化的失效模式。螺栓连接效率强调了优化 W/D 比（2 以上）以实现高效率的必要性。这些发现突显了几何形状和温度相互作用对 CF/PEKK 复合材料的影响，这对于设计高性能材料，尤其是航空航天应用至关重要。

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分钟内获得全文去求助

来源期刊

Composites Part A: Applied Science and Manufacturing 工程技术-材料科学：复合

CiteScore

15.20

自引率

5.70%

发文量

492

审稿时长

30 days

期刊介绍： Composites Part A: Applied Science and Manufacturing is a comprehensive journal that publishes original research papers, review articles, case studies, short communications, and letters covering various aspects of composite materials science and technology. This includes fibrous and particulate reinforcements in polymeric, metallic, and ceramic matrices, as well as 'natural' composites like wood and biological materials. The journal addresses topics such as properties, design, and manufacture of reinforcing fibers and particles, novel architectures and concepts, multifunctional composites, advancements in fabrication and processing, manufacturing science, process modeling, experimental mechanics, microstructural characterization, interfaces, prediction and measurement of mechanical, physical, and chemical behavior, and performance in service. Additionally, articles on economic and commercial aspects, design, and case studies are welcomed. All submissions undergo rigorous peer review to ensure they contribute significantly and innovatively, maintaining high standards for content and presentation. The editorial team aims to expedite the review process for prompt publication.