基于化学气相渗透的新型集成成型策略,用于具有可变刚度的 C/C 蜂窝材料

IF 3.5 3区 材料科学 Q1 ENGINEERING, MECHANICAL
Donghai Du, Xiaoyan Liang, Weijie Li, Yalei Wang, Zhongwei Zhang
{"title":"基于化学气相渗透的新型集成成型策略,用于具有可变刚度的 C/C 蜂窝材料","authors":"Donghai Du, Xiaoyan Liang, Weijie Li, Yalei Wang, Zhongwei Zhang","doi":"10.1177/10996362241278215","DOIUrl":null,"url":null,"abstract":"Variable stiffness Carbon/Carbon (C/C) honeycomb can be designed to exhibit varying stiffness based on the structural load gradient, facilitating a high degree of alignment between structural performance and function. The elimination of mass redundancy and achievement of extreme light-weighting confer promising applications in the aerospace sector. However, the universal preparation approach for variable stiffness honeycomb faces challenges related to material mass redundancy and susceptibility to cracking at the bonds. Consequently, addressing the integrated forming issues associated with variable stiffness honeycomb becomes urgent. In this study, firstly, the conventional honeycomb densification method and the CVI domain-limited reactor design approach for integrated forming of variable-stiffness honeycombs are discussed. Subsequently, a multi-physics field coupling model for C/C honeycomb forming is developed, and its accuracy is validated through honeycomb forming experiments. The influence of three key process parameters, gas residence time, temperature, and pressure, on the quality of honeycomb forming were explored. Following the influence laws, the study applies specific process parameters to the three distinct regions of the reactor. Through this meticulously regulated process, the final variable stiffness honeycomb attains a 17.6 % reduction in weight compared to a constant density honeycomb of the same volume.","PeriodicalId":17215,"journal":{"name":"Journal of Sandwich Structures & Materials","volume":null,"pages":null},"PeriodicalIF":3.5000,"publicationDate":"2024-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"A novel integrated forming strategy based on chemical vapor infiltration for C/C honeycomb with variable stiffness\",\"authors\":\"Donghai Du, Xiaoyan Liang, Weijie Li, Yalei Wang, Zhongwei Zhang\",\"doi\":\"10.1177/10996362241278215\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Variable stiffness Carbon/Carbon (C/C) honeycomb can be designed to exhibit varying stiffness based on the structural load gradient, facilitating a high degree of alignment between structural performance and function. The elimination of mass redundancy and achievement of extreme light-weighting confer promising applications in the aerospace sector. However, the universal preparation approach for variable stiffness honeycomb faces challenges related to material mass redundancy and susceptibility to cracking at the bonds. Consequently, addressing the integrated forming issues associated with variable stiffness honeycomb becomes urgent. In this study, firstly, the conventional honeycomb densification method and the CVI domain-limited reactor design approach for integrated forming of variable-stiffness honeycombs are discussed. Subsequently, a multi-physics field coupling model for C/C honeycomb forming is developed, and its accuracy is validated through honeycomb forming experiments. The influence of three key process parameters, gas residence time, temperature, and pressure, on the quality of honeycomb forming were explored. Following the influence laws, the study applies specific process parameters to the three distinct regions of the reactor. Through this meticulously regulated process, the final variable stiffness honeycomb attains a 17.6 % reduction in weight compared to a constant density honeycomb of the same volume.\",\"PeriodicalId\":17215,\"journal\":{\"name\":\"Journal of Sandwich Structures & Materials\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":3.5000,\"publicationDate\":\"2024-09-04\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Sandwich Structures & Materials\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://doi.org/10.1177/10996362241278215\",\"RegionNum\":3,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"ENGINEERING, MECHANICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Sandwich Structures & Materials","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1177/10996362241278215","RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, MECHANICAL","Score":null,"Total":0}
引用次数: 0

摘要

可变刚度碳/碳(C/C)蜂窝可根据结构载荷梯度设计成不同的刚度,使结构性能和功能高度一致。消除质量冗余和实现极轻量化使其在航空航天领域的应用前景广阔。然而,变刚度蜂窝材料的通用制备方法面临着材料质量冗余和结合处易开裂的挑战。因此,解决与变刚度蜂窝材料相关的综合成型问题变得刻不容缓。在本研究中,首先讨论了用于变刚度蜂窝综合成型的传统蜂窝致密化方法和 CVI 限域反应器设计方法。随后,建立了 C/C 蜂窝成形的多物理场耦合模型,并通过蜂窝成形实验验证了该模型的准确性。研究探讨了气体停留时间、温度和压力这三个关键工艺参数对蜂窝成型质量的影响。根据影响规律,研究将特定的工艺参数应用于反应器的三个不同区域。通过这种精心调节的工艺,最终的可变刚度蜂窝与相同体积的恒定密度蜂窝相比,重量减轻了 17.6%。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
A novel integrated forming strategy based on chemical vapor infiltration for C/C honeycomb with variable stiffness
Variable stiffness Carbon/Carbon (C/C) honeycomb can be designed to exhibit varying stiffness based on the structural load gradient, facilitating a high degree of alignment between structural performance and function. The elimination of mass redundancy and achievement of extreme light-weighting confer promising applications in the aerospace sector. However, the universal preparation approach for variable stiffness honeycomb faces challenges related to material mass redundancy and susceptibility to cracking at the bonds. Consequently, addressing the integrated forming issues associated with variable stiffness honeycomb becomes urgent. In this study, firstly, the conventional honeycomb densification method and the CVI domain-limited reactor design approach for integrated forming of variable-stiffness honeycombs are discussed. Subsequently, a multi-physics field coupling model for C/C honeycomb forming is developed, and its accuracy is validated through honeycomb forming experiments. The influence of three key process parameters, gas residence time, temperature, and pressure, on the quality of honeycomb forming were explored. Following the influence laws, the study applies specific process parameters to the three distinct regions of the reactor. Through this meticulously regulated process, the final variable stiffness honeycomb attains a 17.6 % reduction in weight compared to a constant density honeycomb of the same volume.
求助全文
通过发布文献求助,成功后即可免费获取论文全文。 去求助
来源期刊
Journal of Sandwich Structures & Materials
Journal of Sandwich Structures & Materials 工程技术-材料科学:表征与测试
CiteScore
9.60
自引率
2.60%
发文量
49
审稿时长
7 months
期刊介绍: The Journal of Sandwich Structures and Materials is an international peer reviewed journal that provides a means of communication to fellow engineers and scientists by providing an archival record of developments in the science, technology, and professional practices of sandwich construction throughout the world. This journal is a member of the Committee on Publication Ethics (COPE).
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信