Carbon fibre-reinforced materials are becoming more and more popular in various fields of industries because of their lightweight and perfect mechanical properties. Additive manufacturing technologies can be used for the production of complex parts from various materials including composites. Fused deposition modelling (FDM) is an excellent technology for the production of composite structures reinforced with short or continuous carbon fibre. In this study, modified FDM technology was used for the production of composites reinforced with continuous carbon fibre. The main aim of this study is to evaluate the shear strength of 3D-printed composite structures. The influence of printing layer height and line width on shear strength was analysed. Results showed that layer height has a significant influence on shear strength, while the influence of printing line width on shear strength is slightly smaller. Reduction of layer height from 0.4 mm to 0.3 mm allows increasing shear strength by about 40 percent. Moreover, the influence of the shear area and overlap length on shear force showed linear dependency, in which the shear area is increasing the shear force increasing proportionally. Finally, the results obtained can be used for the design and development of new 3D-printed composite structures.
We are currently on the threshold of the fourth industrial revolution. As the consumers’ expectations are rising, each and every consumer will be able not only to participate in the product development and production processes, but also to propose their ideas, wishes and comments. Due to the changing global production trends, it is clear that the ‘usual’ production will not be able to meet all of its challenges. The development of new shapes, automation, novel non-standard materials, the freedom of design and production, the ability to reorient and react flexibly to the changing conditions are the factors that will give some production companies the competitive advantage, while others will create unmanageable difficulties. The methodological guidelines for laboratory works are intended for Master degree students in the study field of Production Engineering under study programmes Mechatronics, Industrial Engineering and Management, Production Engineering in the framework of the module Computer Integrated Manufacturing. This book can also be useful for bachelor students and anyone interested in the possibilities offered by new technologies and their practical applications.
Time nowadays becoming more and more important resource in the life. Additive manufacturing technologies allow to produce very complex shapes of products reducing product development time. Moreover, additive manufacturing of composite parts allows to produce structural parts with perfect mechanical properties. Though production of composites is still very complicated because reinforcement material needs to be prepared for the process. Moreover, preparation process can significantly influence on quality of produced part. This article focusing on preparation procedure of continuous carbon fiber (CCF) tow for 3D printing of composite structures. Visual analysis of impregnated CCF showed that internal air voids area in the analyzed cross‐sections fluctuates from 11.1% to 22.8%. Meanwhile, after pull‐out test, significant effect of impregnation on adhesion is observed. Not impregnated CCF is pulled‐out from matrix material with the tensile force 38 N, however impregnated CCF is not even pulled‐out with the force 138 N.
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