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An explicit finite element solution for the forming prediction of continuous fibre-reinforced thermoplastic sheets 连续纤维增强热塑性薄板成形预测的显式有限元解
Composites Manufacturing
Pub Date : 1995-01-01 DOI: 10.1016/0956-7143(95)95016-R
A.K. Pickett, T. Queckbörner, P. De Luca, E. Haug

The pressure forming, or thermoforming, of preconsolidated continuous fibre-reinforced thermoplastic sheets offers a promising fabrication option for structural composite components. Modern thermoplastic polymers have improved mechanical and physical properties compared with their thermoset counterparts and, perhaps most important for industry, offer the possibility for rapid part production. As in tradational metal stamping, the current process and part design for thermoforming rely heavily on ‘trial and error’ practices which are costly, inefficient and provide little scope for optimization and understanding of the forming process. For efficient thermoforming information regarding temperature and pressure distribution, part thickness distribution, fibre orientations and potential regions of material defects must be determined. This paper presents some first results of an explicit finite element solution to simulate the forming process. At present a constant temperature process is assumed, however work is presently underway to include this effect.

预固结连续纤维增强热塑性塑料片材的压力成型或热成型为结构复合材料部件提供了一种有前途的制造选择。与热固性聚合物相比，现代热塑性聚合物具有更好的机械和物理性能，也许对工业最重要的是，它提供了快速生产零件的可能性。与传统的金属冲压一样，目前的热成形工艺和零件设计在很大程度上依赖于“试错”的做法，这种做法成本高、效率低，而且对成形工艺的优化和理解余地很小。为了获得有关温度和压力分布、零件厚度分布、纤维取向和材料缺陷潜在区域的有效热成型信息，必须确定。本文给出了模拟成形过程的显式有限元解的初步结果。目前假定是一个恒温过程，但目前正在进行工作以包括这一效应。
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引用次数: 53
Improved thermoplastic tape winding using laser or direct-flame heating 改进热塑性胶带缠绕使用激光或直接火焰加热
Composites Manufacturing
Pub Date : 1995-01-01 DOI: 10.1016/0956-7143(95)95010-V
R. Funck, M. Neitzel

Filament winding is one of the most challenging technologies to produce axisymmetrical or even nonsymmetrical structural thermoplastic composite shells with continuous fibre reinforcement. The aims of this contribution are: (1) to present results on laser-assisted high speed filament winding of pre-impregnated thermoplastic tapes and quasi-axial helical filament winding with direct flame, and (2) to compare different heating and pre-heating methods. The key issue in the application of thermoplastic tape winding is heating. Proper heating of pre-impregnated tapes during the on-line winding process can be achieved by a variety of methods: laser and infra-red radiation, hot gas and direct flame. It will be considered how the above heating methods affect the equipment and process costs, energy efficiency and response time.

长丝缠绕是制造轴对称甚至非对称连续纤维增强热塑性复合材料壳体的最具挑战性的技术之一。本贡献的目的是:(1)介绍激光辅助高速缠绕预浸渍热塑性塑料带和准轴向螺旋缠绕直接火焰的结果;(2)比较不同的加热和预热方法。热塑性胶带缠绕应用的关键问题是加热。在线缠绕过程中，预浸渍胶带的适当加热可以通过多种方法实现:激光和红外辐射，热气体和直接火焰。将考虑上述加热方法如何影响设备和工艺成本，能源效率和响应时间。
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引用次数: 43
Composites and Composites Manufacturing to be incorporated into a new title 复合材料和复合材料制造将被纳入一个新的标题
Composites Manufacturing
Pub Date : 1995-01-01 DOI: 10.1016/0956-7143(95)95000-O
John Summerscales, Ian Salusbury (Publishing Editor), Tim Gutowski, Ignazio Crivelli Visconti
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引用次数: 0
The ‘design for manufacture’ of continuous fibre-reinforced thermoplastic products in primary aircraft structure 飞机初级结构中连续纤维增强热塑性塑料产品的“制造设计”
Composites Manufacturing
Pub Date : 1995-01-01 DOI: 10.1016/0956-7143(95)95017-S
K.O. Walls, R.J. Crawford

As the technology of composite structures matures, the use of thermoplastic composite materials in aircraft increases, offering reduced structural weight and improved payload. However, primary load-bearing applications demand optimum structural integrity in harsh environmental conditions, and the total installed manufacturing cost has previously restricted the use of thermoplastic materials. This paper describes a programme of work to develop a carbon fibre-reinforced thermoplastic transverse floor beam for a commercial jet. Component selection, material selection, design optimization, equipment, processing methods and testing are discussed. A cost model for the composite component is presented in comparison with that of the incumbent aluminium alloy beam. A key element of the work has been “design for manufacture”.

随着复合材料结构技术的成熟，热塑性复合材料在飞机上的应用越来越多，减少了结构重量，提高了有效载荷。然而，主要的承重应用需要在恶劣的环境条件下获得最佳的结构完整性，并且以前的总安装制造成本限制了热塑性材料的使用。本文介绍了一种用于商用喷气式飞机的碳纤维增强热塑性横向地板梁的研制方案。讨论了元件选择、材料选择、设计优化、设备、加工方法和试验。提出了复合构件的成本模型，并与现有铝合金梁的成本模型进行了比较。这项工作的一个关键要素是“为制造而设计”。
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引用次数: 14
Contents of volume 6 第六卷内容
Composites Manufacturing
Pub Date : 1995-01-01 DOI: 10.1016/0956-7143(95)90021-7
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引用次数: 0
Method of producing fabric reinforcing matrix for composites 复合材料织物增强基质的制备方法
Composites Manufacturing
Pub Date : 1995-01-01 DOI: 10.1016/0956-7143(95)99651-8
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引用次数: 0
Apparatus for manufacturing a glass and organic composite strand, including blowing device 制造玻璃和有机复合钢绞线的装置，包括吹制装置
Composites Manufacturing
Pub Date : 1995-01-01 DOI: 10.1016/0956-7143(95)99656-D
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引用次数: 0
Method and apparatus for producing fibres 生产纤维的方法和设备
Composites Manufacturing
Pub Date : 1995-01-01 DOI: 10.1016/0956-7143(95)99659-G
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引用次数: 0
Method of manufacturing three-dimensional parts using sheets of thermoplastic resin high performance composite material and apparatus therefor 使用热塑性树脂高性能复合材料薄片制造三维零件的方法及其装置
Composites Manufacturing
Pub Date : 1995-01-01 DOI: 10.1016/0956-7143(95)90007-1
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引用次数: 0
Method of making fibre reinforced metal component 纤维增强金属构件的制造方法
Composites Manufacturing
Pub Date : 1995-01-01 DOI: 10.1016/0956-7143(95)90011-X
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引用次数: 0
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