Recycled Carbon Fibers in Complex Structural Parts - Organic Sheets Made of rCF Staple Fiber Yarns

2017 ◽  
Vol 742 ◽  
pp. 602-609 ◽  
Author(s):  
Christian Goergen ◽  
Stephan Baz ◽  
Peter Mitschang ◽  
Götz T. Gresser

In order to sustainably establish carbon fiber reinforced polymer composites (CFRPC) in the market on an industry scale, solutions on how to recycle these new materials have to be developed. Quasi-continuously aligned carbon staple fiber structures in organic sheets made of recycled carbon are one approach which will be dealt with in this article. The process chain as well as the mechanical properties will be presented. Moreover, the specific feature of staple fiber yarns to be able to plastically deform under process temperature, enabling new degrees of deep-drawing of CFRPC organic sheets in the thermoforming process, will be highlighted.

Author(s):  
Baowei Qiu ◽  
Long Ni ◽  
Xueqin Zhang ◽  
Yang Chen ◽  
Shengtai Zhou ◽  
...  

The properties of the fiber-matrix interface were one of the most important factors that influence the performance of carbon fiber reinforced polymer composites (CFRPs). It was necessary to strengthen the...


2021 ◽  
pp. 136943322098862
Author(s):  
Leandro Ferreira Silva ◽  
Emil de Souza Sánchez Filho ◽  
Julio Jeronimo Holtz Silva Filho

This paper shows a theoretical model for reinforced concrete beams subjected to torsion and strengthened with composite of carbon fibers (CFRP). It is based on researches of Michael Collins and collaborators and approaches the theory of diagonal compressive field. This model was inserted in a mathematic software, due to the need of interactions to obtain the torsion and torsion angles. The validation of theoretical values was realized through the results of tests obtained from the literature and it was understood that the model is valid and conservative for the ultimate torsion in most of the studies carried out. However, the beams that had the geometric ratios width and height b/h < 0.5 and the ratio between the cover and the smaller dimension of the d/cob element ≤6 had not so accurate results.


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