{"title":"复合材料预成型应用中碳纤维缆索处理和铺展的摩擦力分析模型","authors":"J. Garofalo, D. Walczyk","doi":"10.1115/1.4065410","DOIUrl":null,"url":null,"abstract":"\n A novel co-extrusion system for continuous fiber reinforced thermoplastic composites in filament and narrow tape format was designed, fabricated, and tested. The new modified pultrusion process, called In Situ Impregnation, impregnates continuous dry fiber reinforcement tows in-situ with thermoplastic matrix for applications ranging from 3D printing using robotic manipulation to automated fiber placement. The technical goal of the system is to directly co-extrude and impregnate a reinforcement fiber tow (carbon) with thermoplastic matrix injected by an extruder fed with thermoplastic pellets. This approach uses inexpensive materials instead of ‘prepreg’ tow in order to streamline the additive manufacturing process, cut costs for advanced composites manufacturing, and deliver fully customizable fiber orientation. The purpose of this paper is to discuss analytical modeling of friction and fiber tensioning in the system which allows for the full impregnation of the fibers. Experiments were conducted on a working pultrusion system where load was adjusted through the tensioning system to better understand the amount of friction throughout the system, the magnitude of tension in the fiber tow, and to validate the models. The resulting friction model can be used by machine designers to estimate the tension in tows, ropes, fibers, etc. in similar tensioning devices, and estimate automated system specifications such as motor requirements. A brief description of the new manufacturing process is also provided. Future work includes commercialization of the technology, automation of the manufacturing system, and further modeling work to predict fiber spreading behavior based on geometric factors.","PeriodicalId":507815,"journal":{"name":"Journal of Manufacturing Science and Engineering","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2024-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"An Analytical Friction Model for Handling and Spreading of Carbon Fiber Tows for Composite Prepregging Applications\",\"authors\":\"J. Garofalo, D. Walczyk\",\"doi\":\"10.1115/1.4065410\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"\\n A novel co-extrusion system for continuous fiber reinforced thermoplastic composites in filament and narrow tape format was designed, fabricated, and tested. The new modified pultrusion process, called In Situ Impregnation, impregnates continuous dry fiber reinforcement tows in-situ with thermoplastic matrix for applications ranging from 3D printing using robotic manipulation to automated fiber placement. The technical goal of the system is to directly co-extrude and impregnate a reinforcement fiber tow (carbon) with thermoplastic matrix injected by an extruder fed with thermoplastic pellets. This approach uses inexpensive materials instead of ‘prepreg’ tow in order to streamline the additive manufacturing process, cut costs for advanced composites manufacturing, and deliver fully customizable fiber orientation. The purpose of this paper is to discuss analytical modeling of friction and fiber tensioning in the system which allows for the full impregnation of the fibers. Experiments were conducted on a working pultrusion system where load was adjusted through the tensioning system to better understand the amount of friction throughout the system, the magnitude of tension in the fiber tow, and to validate the models. The resulting friction model can be used by machine designers to estimate the tension in tows, ropes, fibers, etc. in similar tensioning devices, and estimate automated system specifications such as motor requirements. A brief description of the new manufacturing process is also provided. Future work includes commercialization of the technology, automation of the manufacturing system, and further modeling work to predict fiber spreading behavior based on geometric factors.\",\"PeriodicalId\":507815,\"journal\":{\"name\":\"Journal of Manufacturing Science and Engineering\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2024-04-25\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Manufacturing Science and Engineering\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1115/1.4065410\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Manufacturing Science and Engineering","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1115/1.4065410","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
摘要
我们设计、制造并测试了一种用于长丝和窄带形式连续纤维增强热塑性复合材料的新型共挤系统。这种新型改良拉挤工艺称为 "原位浸渍"(In Situ Impregnation),可将连续干纤维增强丝束与热塑性基体原位浸渍,应用范围从使用机器人操作的 3D 打印到自动纤维铺放。该系统的技术目标是直接将增强纤维丝束(碳纤维)与由挤出机注入热塑性塑料颗粒的热塑性基质进行共挤出和浸渍。这种方法使用廉价材料代替 "预浸料 "丝束,以简化增材制造工艺,降低先进复合材料制造成本,并提供完全可定制的纤维取向。本文旨在讨论该系统中摩擦和纤维张力的分析建模,以实现纤维的完全浸渍。实验是在一个工作中的拉挤系统上进行的,通过拉伸系统调整负载,以更好地了解整个系统中的摩擦力大小、纤维束中的张力大小,并对模型进行验证。由此产生的摩擦模型可供机器设计人员用于估算类似拉伸装置中纤维束、绳索、纤维等的张力,以及估算电机要求等自动化系统规格。此外,还简要介绍了新的制造工艺。未来的工作包括技术的商业化、制造系统的自动化,以及根据几何因素预测纤维铺展行为的进一步建模工作。
An Analytical Friction Model for Handling and Spreading of Carbon Fiber Tows for Composite Prepregging Applications
A novel co-extrusion system for continuous fiber reinforced thermoplastic composites in filament and narrow tape format was designed, fabricated, and tested. The new modified pultrusion process, called In Situ Impregnation, impregnates continuous dry fiber reinforcement tows in-situ with thermoplastic matrix for applications ranging from 3D printing using robotic manipulation to automated fiber placement. The technical goal of the system is to directly co-extrude and impregnate a reinforcement fiber tow (carbon) with thermoplastic matrix injected by an extruder fed with thermoplastic pellets. This approach uses inexpensive materials instead of ‘prepreg’ tow in order to streamline the additive manufacturing process, cut costs for advanced composites manufacturing, and deliver fully customizable fiber orientation. The purpose of this paper is to discuss analytical modeling of friction and fiber tensioning in the system which allows for the full impregnation of the fibers. Experiments were conducted on a working pultrusion system where load was adjusted through the tensioning system to better understand the amount of friction throughout the system, the magnitude of tension in the fiber tow, and to validate the models. The resulting friction model can be used by machine designers to estimate the tension in tows, ropes, fibers, etc. in similar tensioning devices, and estimate automated system specifications such as motor requirements. A brief description of the new manufacturing process is also provided. Future work includes commercialization of the technology, automation of the manufacturing system, and further modeling work to predict fiber spreading behavior based on geometric factors.